format-version: 1.2
date: 15:04:2008 15:48
version: $Revision 1.37$
saved-by: lschriml
auto-generated-by: OBO-Edit 1.101
subsetdef: EnvO-Lite-GSC "Lite category for GSC community"
default-namespace: ENVO

[Term]
id: ENVO:00000000
name: geographic feature
comment: May appear on a map.
synonym: "macroscopic spatial feature" EXACT []
is_a: ENVO:00002297 ! environmental feature

[Term]
id: ENVO:00000001
name: bedding-plane cave
def: "A cavity developed along a bedding-plane and elongate in cross-section as a result." [web:http\://wasg.iinet.net.au/terminol.html]
is_a: ENVO:00000067 ! cave

[Term]
id: ENVO:00000002
name: anthropogenic feature
synonym: "man-made feature" RELATED []
synonym: "manmade feature" RELATED []
xref: FTT:78
xref: TGN:50001
is_a: ENVO:00000000 ! geographic feature

[Term]
id: ENVO:00000003
name: mine tailing
synonym: "dumping ground" RELATED [USGS:SDTS]
synonym: "mine dump" RELATED [ADL:FTT]
synonym: "tailing" RELATED [ADL:FTT]
xref: FTT:625
xref: FTT:631
relationship: part_of ENVO:00000076 ! mine

[Term]
id: ENVO:00000004
name: administrative region
synonym: "administrative area" EXACT [ADL:FTT]
synonym: "administrative division" RELATED [ADL:FTT]
synonym: "administrative division" RELATED [Getty:TGN]
synonym: "administrative entity" RELATED [Getty:TGN]
synonym: "boundary region" RELATED [ADL:FTT]
synonym: "civil area" RELATED [ADL:FTT]
synonym: "district" RELATED [ADL:FTT]
synonym: "free trade zone" RELATED [ADL:FTT]
synonym: "governed place" RELATED [ADL:FTT]
synonym: "leased area (government)" RELATED [ADL:FTT]
synonym: "leased zone (government)" RELATED [ADL:FTT]
synonym: "neutral zone (political)" RELATED [ADL:FTT]
synonym: "prefecture" RELATED [ADL:FTT]
synonym: "protectorate" RELATED [ADL:FTT]
synonym: "sheikdom" RELATED [ADL:FTT]
synonym: "sultanate" RELATED [ADL:FTT]
synonym: "trade zone" RELATED [ADL:FTT]
xref: FTT:1242
xref: FTT:1252
xref: FTT:15
xref: FTT:16
xref: FTT:18
xref: FTT:19
xref: FTT:21
xref: FTT:22
xref: FTT:23
xref: FTT:24
xref: FTT:25
xref: FTT:26
xref: FTT:27
xref: FTT:28
xref: FTT:29
xref: FTT:37
xref: TGN:80001
xref: TGN:81099
xref: TGN:81123
is_a: ENVO:00000002 ! anthropogenic feature

[Term]
id: ENVO:00000005
name: first-order administrative region
def: "A primary administrative division of a country, such as a state in the United States." [Geonames:http\://www.geonames.org/export/codes.html]
synonym: "countries, 1st order division" RELATED [ADL:FTT]
synonym: "first level subdivision" RELATED [Getty:TGN]
synonym: "first-order administrative division" RELATED [Geonames:feature]
xref: FTT:414
xref: FTT:569
xref: Geonames:ADM1
xref: TGN:81100
relationship: part_of ENVO:00000009 ! national geopolitical entity

[Term]
id: ENVO:00000006
name: second-order administrative region
def: "A subdivision of a first-order administrative division." [Geonames:http\://www.geonames.org/export/codes.html]
synonym: "countries, 2nd order division" RELATED [ADL:FTT]
synonym: "second level subdivision" RELATED [Getty:TGN]
synonym: "second-order administrative division" RELATED [Geonames:feature]
xref: FTT:286
xref: FTT:576
xref: Geonames:ADM2
xref: TGN:81300
relationship: part_of ENVO:00000005 ! first-order administrative region

[Term]
id: ENVO:00000007
name: third-order administrative region
def: "A subdivision of a second-order administrative division." [Geonames:http\://www.geonames.org/export/codes.html]
synonym: "barrio" RELATED [ADL:FTT]
synonym: "countries, 3rd order division" RELATED [ADL:FTT]
synonym: "third level subdivision" RELATED [Getty:TGN]
synonym: "third-order administrative division" RELATED [Geonames:feature]
xref: FTT:204
xref: FTT:205
xref: FTT:578
xref: Geonames:ADM3
xref: TGN:82401
relationship: part_of ENVO:00000006 ! second-order administrative region

[Term]
id: ENVO:00000008
name: fourth-order administrative region
def: "A subdivision of a third-order administrative division." [Geonames:http\://www.geonames.org/export/codes.html]
synonym: "countries, 4th order division" RELATED [ADL:FTT]
synonym: "fourth level subdivision" RELATED [Getty:TGN]
synonym: "fourth-order administrative division" RELATED [Geonames:feature]
xref: FTT:580
xref: FTT:581
xref: Geonames:ADM4
xref: TGN:82402
relationship: part_of ENVO:00000007 ! third-order administrative region

[Term]
id: ENVO:00000009
name: national geopolitical entity
def: "A political association with effective dominion over a geographic area." [wiki:http\://en.wikipedia.org/wiki/State]
synonym: "country" RELATED [ADL:FTT]
synonym: "independent nation" NARROW [Getty:TGN]
synonym: "independent political entity" NARROW [Getty:TGN]
synonym: "independent sovereign nation" NARROW [Getty:TGN]
synonym: "nation" EXACT [ADL:FTT]
synonym: "political entity" RELATED [ADL:FTT]
synonym: "state" RELATED []
xref: FTT:424
xref: FTT:566
xref: FTT:567
xref: FTT:571
xref: TGN:80006
xref: TGN:81010
xref: TGN:81011
xref: TGN:81102
is_a: ENVO:00000123 ! political entity

[Term]
id: ENVO:00000010
name: transport feature
def: "A man-made feature constructed for the purpose of enabling the movement of humans, their animals or their vehicles." [MA:ma]
xref: FTT:83
is_a: ENVO:00000070 ! constructed feature

[Term]
id: ENVO:00000011
name: garden
def: "An enclosure for displaying selected plant or animal life." [Geonames:feature]
synonym: "cropland" RELATED [USGS:SDTS]
synonym: "garden" EXACT [Geonames:feature]
synonym: "park" RELATED [ADL:FTT]
synonym: "PARK" RELATED [USGS:SDTS]
xref: FTT:31
xref: FTT:743
xref: Geonames:GDN
xref: TGN:53010
is_a: ENVO:00000113 ! cultivated habitat

[Term]
id: ENVO:00000012
name: hydrographic feature
def: "A geographical feature associated with water." [MA:ma]
synonym: "eddy" RELATED [ADL:FTT]
synonym: "fluvial feature" RELATED [ADL:FTT]
synonym: "marine feature" RELATED [ADL:FTT]
synonym: "overfalls" RELATED [ADL:FTT]
synonym: "overfalls" RELATED [Geonames:feature]
synonym: "OVERFALLS" RELATED [USGS:SDTS]
synonym: "tidal ripp" RELATED [USGS:SDTS]
synonym: "upwelling" RELATED [ADL:FTT]
xref: FTT:131
xref: FTT:280
xref: FTT:711
xref: FTT:761
xref: FTT:824
xref: FTT:825
xref: FTT:826
xref: FTT:827
xref: FTT:828
xref: FTT:829
xref: Geonames:OVF
is_a: ENVO:00000000 ! geographic feature
relationship: has_part ENVO:00002006 ! water

[Term]
id: ENVO:00000013
name: cave system
def: "A collection of caves interconnected by enterable passages or linked hydrologically or a cave with an extensive complex of chambers and passages." [web:http\://wasg.iinet.net.au/terminol.html]
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000014
name: canal
def: "Artificial watercourse with no flow or a controlled flow used for navigation, drainage or irrigation." [MA:ma]
synonym: "canal" EXACT [Geonames:feature]
synonym: "canal bend" NARROW [ADL:FTT]
synonym: "drain (channel)" NARROW [ADL:FTT]
synonym: "irrigation system" NARROW [ADL:FTT]
synonym: "lateral" NARROW [ADL:FTT]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:129
xref: FTT:395
xref: FTT:407
xref: FTT:408
xref: Geonames:CNL
xref: TGN:51252
is_a: ENVO:00000121 ! artificial channel

[Term]
id: ENVO:00000015
name: ocean
def: "Continuous saline-water bodies that surround the continents and fill the Earth's great depressions." [ADL:FTT]
synonym: "Ocean" EXACT [NASA:earthrealm]
synonym: "ocean" EXACT [Geonames:feature]
synonym: "ocean region" RELATED [ADL:FTT]
synonym: "sea" RELATED [USGS:SDTS]
xref: FTT:1019
xref: FTT:943
xref: Geonames:OCN
xref: TGN:21102
is_a: ENVO:00000017 ! saline hydrographic feature
is_a: ENVO:00001999 ! marine water body

[Term]
id: ENVO:00000016
name: sea
def: "A large expanse of saline water usually connected with an ocean." [wiki:http\://en.wikipedia.org/wiki/Sea]
synonym: "channel" NARROW []
synonym: "closed sea" NARROW [USGS:SDTS]
synonym: "marginal sea" NARROW [USGS:SDTS]
synonym: "open sea" NARROW [USGS:SDTS]
synonym: "open sound" NARROW [USGS:SDTS]
synonym: "open water" NARROW [USGS:SDTS]
synonym: "Sea" EXACT [NASA:earthrealm]
synonym: "sea" EXACT [Geonames:feature]
synonym: "sea" EXACT [ADL:FTT]
xref: FTT:233
xref: FTT:830
xref: Geonames:SEA
xref: TGN:21103
is_a: ENVO:00000017 ! saline hydrographic feature
is_a: ENVO:00001999 ! marine water body

[Term]
id: ENVO:00000017
name: saline hydrographic feature
def: "A geographical feature associated with water with a halinity above 30 ppt (roughly 35 g/L)." [wiki:http\://en.wikipedia.org/wiki/Salinity]
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000018
name: dry river
def: "A river that has either permanently or temporally lost its water." [MA:ma]
is_a: ENVO:00000278 ! dry stream

[Term]
id: ENVO:00000019
name: saline lake
def: "A lake whose water contains a considerable concentration of dissolved salts." [MA:ma]
synonym: "lake" BROAD [ADL:FTT]
synonym: "lake" BROAD [USGS:SDTS]
synonym: "salina" RELATED [USGS:SDTS]
synonym: "SalineLake" EXACT [NASA:earthrealm]
synonym: "salt lake" RELATED [Geonames:feature]
synonym: "salt lake" EXACT [USGS:SDTS]
synonym: "salt lake" EXACT [Getty:TGN]
synonym: "salt lake" NARROW [ADL:FTT]
synonym: "salt lakes" EXACT [Geonames:feature]
synonym: "soda lake" RELATED []
xref: FTT:221
xref: FTT:907
xref: Geonames:LKN
xref: Geonames:LKSN
xref: TGN:21116
is_a: ENVO:00000017 ! saline hydrographic feature
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000020
name: lake
def: "A body of water or other liquid of considerable size contained on a body of land." [wiki:http\://en.wikipedia.org/wiki/Lake]
synonym: "broad" RELATED []
synonym: "catch basin" NARROW [USGS:SDTS]
synonym: "LAKE" EXACT [USGS:SDTS]
synonym: "Lake" EXACT [NASA:earthrealm]
synonym: "lake" EXACT [Geonames:feature]
synonym: "lakes" EXACT [Geonames:feature]
synonym: "llyn" RELATED []
synonym: "loch" RELATED []
synonym: "lochan" RELATED [ADL:FTT]
synonym: "lough" RELATED []
synonym: "mere" RELATED []
synonym: "mortlake" RELATED [USGS:SDTS]
synonym: "open water" NARROW [USGS:SDTS]
synonym: "pasteuer lake" RELATED [USGS:SDTS]
synonym: "tarn" NARROW [ADL:FTT]
xref: FTT:221
xref: FTT:704
xref: FTT:909
xref: Geonames:LK
xref: Geonames:LKS
xref: TGN:21114
xref: TGN:21115
is_a: ENVO:00000063 ! water body

[Term]
id: ENVO:00000021
name: freshwater lake
def: "A lake of whose water contains low concentrations of salts." [wiki:http\://en.wikipedia.org/wiki/Freshwater]
synonym: "FreshwaterLake" EXACT [NASA:earthrealm]
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000022
name: river
def: "Natural freshwater surface streams of considerable volume and a permanent or seasonal flow, moving in a definite channel toward a sea, lake, or another river; any large streams, or ones larger than brooks or creeks, such as the trunk stream and larger branches of a drainage system." [ADL:FTT]
synonym: "braided river" NARROW [USGS:SDTS]
synonym: "rio" EXACT [ADL:FTT]
synonym: "rio" EXACT [USGS:SDTS]
synonym: "River" EXACT [NASA:earthrealm]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:1179
xref: FTT:251
xref: TGN:21105
is_a: ENVO:00000023 ! stream

[Term]
id: ENVO:00000023
name: stream
def: "Linear body of water flowing on the Earth's surface." [USGS:http\://mapping.usgs.gov/www/ti/GNIS/gnis_users_guide_appendixc.html]
synonym: "beck" RELATED [USGS:SDTS]
synonym: "braided stream" NARROW [USGS:SDTS]
synonym: "brook" RELATED [ADL:FTT]
synonym: "brook" RELATED [Getty:TGN]
synonym: "burn (hydrographic)" RELATED [ADL:FTT]
synonym: "Creek" RELATED [NASA:earthrealm]
synonym: "creek" RELATED [ADL:FTT]
synonym: "creek" RELATED [Getty:TGN]
synonym: "creek" RELATED [USGS:SDTS]
synonym: "fork (hydrographic" NARROW [ADL:FTT]
synonym: "glacial stream" NARROW [USGS:SDTS]
synonym: "lode" NARROW [USGS:SDTS]
synonym: "millstream" NARROW []
synonym: "rivulet" RELATED [USGS:SDTS]
synonym: "stream" EXACT [Geonames:feature]
synonym: "Stream" EXACT [NASA:earthrealm]
synonym: "stream bend" NARROW [ADL:FTT]
synonym: "streams" EXACT [Geonames:feature]
synonym: "watercourse" BROAD [USGS:SDTS]
synonym: "watercourse" BROAD [ADL:FTT]
xref: FTT:105
xref: FTT:1221
xref: FTT:1225
xref: FTT:1261
xref: FTT:303
xref: FTT:371
xref: FTT:593
xref: FTT:721
xref: Geonames:STM
xref: Geonames:STMS
xref: TGN:21106
xref: TGN:21107
xref: TGN:21108
xref: TGN:21109
is_a: ENVO:00000029 ! watercourse

[Term]
id: ENVO:00000024
name: intermittent stream
def: "A stream whose flow is not continuous." [MA:ma]
synonym: "intermittent stream" EXACT [Geonames:feature]
synonym: "stream" BROAD [ADL:FTT]
xref: FTT:105
xref: FTT:882
xref: Geonames:STMI
is_a: ENVO:00000023 ! stream
is_a: ENVO:00000388 ! intermittent watercourse

[Term]
id: ENVO:00000025
name: reservoir
def: "An artificial body of water, often contained by a dam, constructed for the purpose of water storage." [MA:ma]
synonym: "covered reservoir" NARROW [ADL:FTT]
synonym: "lake" BROAD [USGS:SDTS]
synonym: "reservoir" EXACT [Geonames:feature]
xref: FTT:587
xref: FTT:588
xref: FTT:882
xref: Geonames:RSV
xref: TGN:51259
is_a: ENVO:00000377 ! artificial lake

[Term]
id: ENVO:00000026
name: well
def: "A cylindrical hole, pit, or tunnel drilled or dug down to a depth from which water, oil, or gas can be pumped or brought to the surface." [Geonames:feature]
synonym: "brine well" NARROW [USGS:SDTS]
synonym: "oil well" NARROW [ADL:FTT]
synonym: "oil well" NARROW [USGS:SDTS]
synonym: "water well" NARROW [ADL:FTT]
synonym: "WELL" EXACT [USGS:SDTS]
synonym: "well" EXACT [Geonames:feature]
synonym: "wells" EXACT [Geonames:feature]
xref: FTT:1032
xref: FTT:1237
xref: FTT:833
xref: Geonames:WLL
xref: Geonames:WLLS
xref: TGN:51255
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000027
name: spring
def: "A point where groundwater or steam flows out of the ground, and is thus where the aquifer surface meets the ground surface or where there is a fissure." [wiki:http\://en.wikipedia.org/wiki/Spring_%28hydrosphere%29#Classification]
synonym: "seep" RELATED [USGS:SDTS]
synonym: "spring" EXACT [Geonames:feature]
synonym: "SPRING" EXACT [USGS:SDTS]
synonym: "Spring" EXACT [NASA:earthrealm]
xref: FTT:982
xref: Geonames:SPNG
xref: TGN:21126
is_a: ENVO:00000063 ! water body

[Term]
id: ENVO:00000028
name: sand pit
def: "A quarry from which sand is extracted." [MA:ma]
synonym: "mine" BROAD [USGS:SDTS]
is_a: ENVO:00000284 ! quarry

[Term]
id: ENVO:00000029
name: watercourse
def: "A flowing body of water." [wiki:http\://en.wikipedia.org/wiki/Watercourse]
synonym: "awawa" RELATED [USGS:SDTS]
synonym: "barranca" RELATED [USGS:SDTS]
synonym: "beck" RELATED [USGS:SDTS]
synonym: "branch" RELATED [USGS:SDTS]
synonym: "brook" RELATED [USGS:SDTS]
synonym: "course" RELATED [USGS:SDTS]
synonym: "culvert" NARROW [USGS:SDTS]
synonym: "draw" RELATED [USGS:SDTS]
synonym: "dredged channel" NARROW [USGS:SDTS]
synonym: "fork" NARROW [USGS:SDTS]
synonym: "gulch" NARROW [USGS:SDTS]
synonym: "gully" NARROW [USGS:SDTS]
synonym: "gut" NARROW [USGS:SDTS]
synonym: "gut" NARROW [Getty:TGN]
synonym: "gutter" NARROW [USGS:SDTS]
synonym: "kill" NARROW [USGS:SDTS]
synonym: "lode" NARROW [USGS:SDTS]
synonym: "moat" RELATED [USGS:SDTS]
synonym: "narrows" RELATED [Getty:TGN]
synonym: "narrows" NARROW [USGS:SDTS]
synonym: "narrows" NARROW [Geonames:feature]
synonym: "narrows (hydrographic)" RELATED [ADL:FTT]
synonym: "overflow channel" NARROW [USGS:SDTS]
synonym: "passage" NARROW [Getty:TGN]
synonym: "passage" NARROW [USGS:SDTS]
synonym: "pup" NARROW [USGS:SDTS]
synonym: "race" NARROW [USGS:SDTS]
synonym: "ravine" NARROW [USGS:SDTS]
synonym: "reach" NARROW [Geonames:feature]
synonym: "reach" NARROW [USGS:SDTS]
synonym: "reach" NARROW [Getty:TGN]
synonym: "rill" NARROW [USGS:SDTS]
synonym: "rio" NARROW [USGS:SDTS]
synonym: "rivulet" NARROW [USGS:SDTS]
synonym: "run" NARROW [Getty:TGN]
synonym: "run" NARROW [USGS:SDTS]
synonym: "runnel" NARROW [USGS:SDTS]
synonym: "seachannel" NARROW [USGS:SDTS]
synonym: "seaway" NARROW [USGS:SDTS]
synonym: "spillway" NARROW [Geonames:feature]
synonym: "spillway" NARROW [USGS:SDTS]
synonym: "stream" NARROW [ADL:FTT]
synonym: "tideway" NARROW [USGS:SDTS]
synonym: "wash" NARROW [USGS:SDTS]
synonym: "water gap" NARROW [USGS:SDTS]
synonym: "WATERCOURSE" EXACT [USGS:SDTS]
synonym: "watercourse" EXACT [Geonames:feature]
synonym: "waterway" RELATED [USGS:SDTS]
xref: FTT:105
xref: Geonames:NRWS
xref: Geonames:RCH
xref: Geonames:SPLY
xref: Geonames:WTRC
xref: TGN:21110
xref: TGN:21131
xref: TGN:21133
xref: TGN:21137
xref: TGN:21163
xref: TGN:21499
is_a: ENVO:00000063 ! water body

[Term]
id: ENVO:00000030
name: dead cave
def: "A cave without streams or drips of water." [web:http\://wasg.iinet.net.au/terminol.html]
synonym: "dry cave" EXACT []
is_a: ENVO:00000067 ! cave

[Term]
id: ENVO:00000031
name: wadi
def: "A valley or ravine, bounded by relatively steep banks, which in the rainy season becomes a watercourse." [Geonames:feature]
synonym: "arroyo" RELATED [ADL:FTT]
synonym: "coulee" RELATED [ADL:FTT]
synonym: "coulee" RELATED [Getty:TGN]
synonym: "gully" RELATED [ADL:FTT]
synonym: "nullah" RELATED [USGS:SDTS]
synonym: "wadi" EXACT [Geonames:feature]
synonym: "wadi bend" NARROW [Geonames:feature]
synonym: "wadi bend" NARROW [ADL:FTT]
synonym: "wadi junction" NARROW [ADL:FTT]
synonym: "wadi mouth" NARROW [ADL:FTT]
synonym: "wadis" EXACT [Geonames:feature]
synonym: "wash" RELATED [ADL:FTT]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:157
xref: FTT:158
xref: FTT:159
xref: FTT:160
xref: FTT:161
xref: FTT:163
xref: FTT:164
xref: Geonames:WAD
xref: Geonames:WADB
xref: Geonames:WADJ
xref: Geonames:WADS
xref: TGN:21167
xref: TGN:21423
xref: TGN:21424
is_a: ENVO:00000029 ! watercourse
is_a: ENVO:00000100 ! valley

[Term]
id: ENVO:00000032
name: bay
def: "An area of water bordered by land on three sides." [wiki:http\://en.wikipedia.org/wiki/Bay]
synonym: "bahia" RELATED [ADL:FTT]
synonym: "bay" RELATED [Geonames:feature]
synonym: "bight" RELATED [Geonames:feature]
synonym: "bight" RELATED [Getty:TGN]
synonym: "embayment" RELATED []
synonym: "firth" RELATED []
synonym: "geo" RELATED []
synonym: "gulf" RELATED [ADL:FTT]
synonym: "gulf" RELATED [Getty:TGN]
synonym: "inlet" RELATED [USGS:SDTS]
synonym: "sea loch" RELATED []
synonym: "sea lough" RELATED []
xref: FTT:190
xref: FTT:232
xref: FTT:235
xref: Geonames:BAY
xref: Geonames:BAYS
xref: Geonames:BGHT
xref: TGN:21121
xref: TGN:21123
xref: TGN:21127
is_a: ENVO:00000137 ! coastal inlet

[Term]
id: ENVO:00000033
name: pond
def: "A body of water, usually of smaller size than a lake." [MA:ma]
synonym: "lake" BROAD [ADL:FTT]
synonym: "lake" BROAD [USGS:SDTS]
synonym: "millpond" RELATED [ADL:FTT]
synonym: "millpond" RELATED [USGS:SDTS]
synonym: "pond" RELATED [Geonames:feature]
synonym: "pond" RELATED [ADL:FTT]
synonym: "Pond" EXACT [NASA:earthrealm]
synonym: "ponds" RELATED [Geonames:feature]
synonym: "pool" RELATED [Geonames:feature]
synonym: "POOL" RELATED [Getty:TGN]
synonym: "pool" RELATED [USGS:SDTS]
synonym: "pool (water body)" RELATED [USGS:SDTS]
synonym: "pool (water body)" NARROW [ADL:FTT]
xref: FTT:221
xref: FTT:902
xref: FTT:904
xref: FTT:905
xref: Geonames:PND
xref: Geonames:PNDS
xref: Geonames:POOL
xref: TGN:21104
xref: TGN:21119
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000034
name: rapids
def: "An area of broken, fast flowing water in a stream, where the slope of the bed increases (but without a prominent break of slope which might result in a waterfall), or where a gently dipping bar of harder rock outcrops." [USGS:SDTS]
synonym: "cataract" RELATED [USGS:SDTS]
synonym: "RAPIDS" EXACT [USGS:SDTS]
synonym: "rapids" EXACT [ADL:FTT]
synonym: "rapids" EXACT [Geonames:feature]
synonym: "torrent" RELATED [USGS:SDTS]
xref: FTT:212
xref: Geonames:RPDS
xref: TGN:21162
relationship: part_of ENVO:00000023 ! stream

[Term]
id: ENVO:00000035
name: marsh
def: "A wetland, featuring grasses, rushes, reeds, typhas, sedges, and other herbaceous plants (possibly with low-growing woody plants) in a context of shallow water." [wiki:http\://en.wikipedia.org/wiki/Marsh]
synonym: "Marsh" RELATED [NASA:earthrealm]
synonym: "marsh" RELATED [Geonames:feature]
synonym: "quagmire" RELATED [ADL:FTT]
synonym: "quagmire" RELATED [USGS:SDTS]
synonym: "wetland" BROAD [USGS:SDTS]
synonym: "wetland" BROAD [ADL:FTT]
xref: FTT:1118
xref: FTT:185
xref: FTT:945
xref: Geonames:MRSH
xref: TGN:21322
is_a: ENVO:00000043 ! wetland

[Term]
id: ENVO:00000036
name: irrigation canal
def: "Artificial watercourse with no flow or a controlled flow used irrigation." [MA:ma]
synonym: "canal" BROAD [Geonames:feature]
synonym: "irrigation canal" EXACT [ADL:FTT]
synonym: "irrigation canal" EXACT [Geonames:feature]
xref: FTT:129
xref: FTT:405
xref: Geonames:CNLI
is_a: ENVO:00000014 ! canal

[Term]
id: ENVO:00000037
name: ditch
def: "A small artificial watercourse dug for draining or irrigating the land." [Geonames:feature]
synonym: "agricultural drain" RELATED []
synonym: "canal" RELATED [ADL:FTT]
synonym: "ditch" EXACT [ADL:FTT]
synonym: "ditch" EXACT [Geonames:feature]
synonym: "drain" RELATED [ADL:FTT]
synonym: "drain" RELATED [USGS:SDTS]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:129
xref: FTT:400
xref: FTT:403
xref: Geomames:DTCH
xref: TGN:51256
is_a: ENVO:00000121 ! artificial channel

[Term]
id: ENVO:00000038
name: lagoon
def: "A sheet of saline water separated from the open sea by sand or shingle banks. The sheet of water between an offshore reef, especially of coral and mainland. The sheet of water within a ring or horseshoe shaped atoll." [USGS:SDTS]
synonym: "barrier lagoon" RELATED [USGS:SDTS]
synonym: "LAGOON" EXACT [USGS:SDTS]
synonym: "Lagoon" EXACT [NASA:earthrealm]
synonym: "lagoon" EXACT [Geonames:feature]
synonym: "lagoons" EXACT [Geonames:feature]
synonym: "laguna" EXACT [ADL:FTT]
synonym: "laguna" EXACT [USGS:SDTS]
synonym: "lake" BROAD [ADL:FTT]
xref: FTT:221
xref: FTT:898
xref: FTT:899
xref: Geonames:LGN
xref: Geonames:LGNS
xref: TGN:21125
is_a: ENVO:00000230 ! coastal wetland

[Term]
id: ENVO:00000039
name: fjord
def: "A long and narrow sea inlet with high steeply sloped walled sides. A fjord is a landform created during a period of glaciation." [wiki:http\://en.wikipedia.org/wiki/Fjord]
synonym: "fiord" EXACT [NASA:earthrealm]
synonym: "fiord" EXACT [ADL:FTT]
synonym: "fjord" EXACT [Geonames:feature]
synonym: "Fjord" EXACT [NASA:earthrealm]
synonym: "fjords" EXACT [Geonames:feature]
synonym: "inlet" RELATED [USGS:SDTS]
synonym: "loch" RELATED [ADL:FTT]
xref: FTT:231
xref: FTT:690
xref: FTT:704
xref: Geonames:FJD
xref: Geonames:FJDS
xref: TGN:21122
is_a: ENVO:00000137 ! coastal inlet

[Term]
id: ENVO:00000040
name: waterfall
def: "A sudden descent of water over a step or ledge in the bed of a river." [USGS:SDTS]
synonym: "cascade" RELATED [ADL:FTT]
synonym: "cascade" RELATED [USGS:SDTS]
synonym: "cataract" RELATED [ADL:FTT]
synonym: "cataract" RELATED [Getty:TGN]
synonym: "fall" RELATED [ADL:FTT]
synonym: "falls" RELATED [USGS:SDTS]
synonym: "force" EXACT []
synonym: "linn" EXACT []
synonym: "WATERFALL" EXACT [USGS:SDTS]
synonym: "waterfalls" EXACT [Geonames:feature]
xref: FTT:435
xref: FTT:436
xref: FTT:439
xref: FTT:680
xref: Geonames:FLLS
xref: TGN:21161
xref: TGN:21166
relationship: part_of ENVO:00000023 ! stream

[Term]
id: ENVO:00000041
name: tidal creek
def: "A tidal water channel. Creeks may often dry to a muddy channel with little or no flow at low tide, but often with significant depth of water at high tide." [wiki:http\://en.wikipedia.org/wiki/Tidal_creek]
synonym: "stream" BROAD [ADL:FTT]
synonym: "tidal creek" EXACT [Geonames:feature]
xref: FTT:105
xref: FTT:1223
xref: Geonames:CRKT
is_a: ENVO:00000230 ! coastal wetland
is_a: ENVO:00000412 ! tidal watercourse

[Term]
id: ENVO:00000042
name: drainage canal
def: "Artificial watercourse with no flow or a controlled flow used drainage." [MA:ma]
synonym: "canal" BROAD [ADL:FTT]
synonym: "drainage canal" EXACT [ADL:FTT]
synonym: "drainage canal" EXACT [Geonames:feature]
xref: FTT:129
xref: FTT:401
xref: Geonames:CNLD
is_a: ENVO:00000014 ! canal

[Term]
id: ENVO:00000043
name: wetland
def: "An area that is inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions." [wiki:http\://en.wikipedia.org/wiki/Wetland]
synonym: "back marsh" NARROW [USGS:SDTS]
synonym: "backswamp" NARROW [USGS:SDTS]
synonym: "backwater" NARROW [ADL:FTT]
synonym: "barrier flat" NARROW [USGS:SDTS]
synonym: "blanket bog" NARROW [USGS:SDTS]
synonym: "bog" NARROW [ADL:FTT]
synonym: "bog" NARROW [Getty:TGN]
synonym: "cienaga" NARROW [ADL:FTT]
synonym: "dismal" NARROW [USGS:SDTS]
synonym: "EstuarineWetland" NARROW [NASA:earthrealm]
synonym: "everglade" NARROW [USGS:SDTS]
synonym: "floating marsh" NARROW [USGS:SDTS]
synonym: "forested wetland" NARROW [ADL:FTT]
synonym: "LacustrineWetland" NARROW [NASA:earthrealm]
synonym: "MarineWetland" NARROW [NASA:earthrealm]
synonym: "marsh" NARROW [ADL:FTT]
synonym: "mire" NARROW [ADL:FTT]
synonym: "mire" NARROW [USGS:SDTS]
synonym: "moor" RELATED [USGS:SDTS]
synonym: "morass" RELATED [USGS:SDTS]
synonym: "mud flat" NARROW [ADL:FTT]
synonym: "muskeg" RELATED [USGS:SDTS]
synonym: "PalustrineWetland" NARROW [NASA:earthrealm]
synonym: "peat cutting area" NARROW [ADL:FTT]
synonym: "peatland" NARROW [ADL:FTT]
synonym: "quagmire" NARROW [USGS:SDTS]
synonym: "quagmire" NARROW [ADL:FTT]
synonym: "quaking bog" NARROW [USGS:SDTS]
synonym: "riparian area" NARROW [ADL:FTT]
synonym: "RiparianWetland" NARROW [NASA:earthrealm]
synonym: "slash" NARROW [USGS:SDTS]
synonym: "slough" NARROW [USGS:SDTS]
synonym: "slough" NARROW [Getty:TGN]
synonym: "slough" NARROW [ADL:FTT]
synonym: "slue" NARROW [ADL:FTT]
synonym: "swamp forest" NARROW [USGS:SDTS]
synonym: "TerrestialWetland" NARROW [NASA:earthrealm]
synonym: "tulelands" NARROW [USGS:SDTS]
synonym: "WETLAND" EXACT [USGS:SDTS]
synonym: "Wetland" EXACT [NASA:earthrealm]
synonym: "wetland" EXACT [Geonames:feature]
synonym: "WetlandRegion" RELATED [NASA:earthrealm]
xref: FTT:1001
xref: FTT:1060
xref: FTT:1061
xref: FTT:1118
xref: FTT:1180
xref: FTT:1190
xref: FTT:1206
xref: FTT:1207
xref: FTT:1226
xref: FTT:184
xref: FTT:185
xref: FTT:228
xref: FTT:281
xref: FTT:480
xref: FTT:716
xref: FTT:883
xref: FTT:934
xref: FTT:945
xref: FTT:983
xref: Geonames:WTLD
xref: TGN:21301
xref: TGN:21304
xref: TGN:21305
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000044
name: peatland
def: "A wetland type that accumulates acidic peat, a deposit of dead plant material." [wiki:http\://en.wikipedia.org/wiki/Bog]
synonym: "bog" RELATED [Geonames:feature]
synonym: "bog" RELATED [ADL:FTT]
synonym: "bog" RELATED [USGS:SDTS]
synonym: "mire" RELATED []
synonym: "morass" RELATED [USGS:SDTS]
synonym: "muskeg" RELATED [USGS:SDTS]
synonym: "peat bog" RELATED [USGS:SDTS]
synonym: "Peatland" RELATED [NASA:earthrealm]
synonym: "wetland" BROAD [USGS:SDTS]
synonym: "wetland" BROAD [ADL:FTT]
xref: FTT:1061
xref: FTT:185
xref: FTT:281
xref: FTT:983
xref: Geonames:BOG
xref: TGN:21304
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000045
name: estuary
def: "A semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea." [wiki:http\://en.wikipedia.org/wiki/Estuary]
synonym: "Estuary" EXACT [NASA:earthrealm]
synonym: "estuary" EXACT [Geonames:feature]
synonym: "inlet" RELATED [USGS:SDTS]
synonym: "mouth" BROAD [USGS:SDTS]
xref: FTT:234
xref: Geonames:ESTY
xref: TGN:21152
is_a: ENVO:00000230 ! coastal wetland
is_a: ENVO:00000386 ! river mouth

[Term]
id: ENVO:00000046
name: hedge
def: "A dense growth of shrubbery planted as a fence or boundary." [USGS:SDTS]
synonym: "HEDGE" EXACT [USGS:SDTS]
synonym: "hedgerow" EXACT [USGS:SDTS]
synonym: "shelter belt" RELATED [USGS:SDTS]
is_a: ENVO:00000113 ! cultivated habitat

[Term]
id: ENVO:00000047
name: canopy
relationship: part_of ENVO:00000111 ! forest

[Term]
id: ENVO:00000048
name: navigation canal
def: "Artificial watercourse with no flow or a controlled flow used navigation." [MA:ma]
synonym: "navigation canal" EXACT [Geonames:feature]
synonym: "navigation canal" NARROW [ADL:FTT]
synonym: "navigation channel" RELATED [ADL:FTT]
synonym: "navigation channel" EXACT [Geonames:feature]
synonym: "ship cannal" RELATED [USGS:SDTS]
xref: FTT:409
xref: FTT:467
xref: Geonames:CHNN
xref: Geonames:CNLN
xref: TGN:51257
is_a: ENVO:00000014 ! canal

[Term]
id: ENVO:00000049
name: volcanic hydrographic feature
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000050
name: geyser
def: "A hot spring that erupts periodically, ejecting a column of hot water and steam into the air." [wiki:http\://en.wikipedia.org/wiki/Geyser]
synonym: "GEYSER" EXACT [USGS:SDTS]
synonym: "geyser" EXACT [Geonames:feature]
synonym: "thermal feature" BROAD [ADL:FTT]
xref: FTT:755
xref: Geonames:GYSR
xref: TGN:21171
is_a: ENVO:00000051 ! hot spring

[Term]
id: ENVO:00000051
name: hot spring
def: "A spring that is produced by the emergence of geothermally-heated groundwater from the Earth's crust." [wiki:http\://en.wikipedia.org/wiki/Hot_spring]
subset: EnvO-Lite-GSC
synonym: "hot spring" EXACT [Geonames:feature]
synonym: "hotspring" EXACT []
synonym: "spring" BROAD [USGS:SDTS]
synonym: "thermal feature" EXACT [ADL:FTT]
synonym: "thermal spring" EXACT []
xref: FTT:732
xref: FTT:815
xref: Geonames:SPNT
is_a: ENVO:00000027 ! spring
is_a: ENVO:00000049 ! volcanic hydrographic feature

[Term]
id: ENVO:00000052
name: crater lake
def: "A lake contained within a volcanic crater." [MA:ma]
synonym: "caldera lake" EXACT []
synonym: "crater lake" EXACT [Geonames:feature]
synonym: "crater lakes" EXACT [Geonames:feature]
synonym: "lake" BROAD [ADL:FTT]
xref: FTT:384
xref: FTT:590
xref: Geonames:LKC
xref: Geonames:LKSC
xref: TGN:21138
is_a: ENVO:00000020 ! lake
is_a: ENVO:00000049 ! volcanic hydrographic feature

[Term]
id: ENVO:00000053
name: freshwater marsh
def: "A marsh associated with water that contains low concentrations of salts." [MA:ma]
is_a: ENVO:00000035 ! marsh
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000054
name: saline marsh
def: "A marsh whose water contains a considerable quantity of dissolved salts." [MA:ma]
synonym: "salt marsh" RELATED [Geonames:feature]
synonym: "salt marsh" EXACT [USGS:SDTS]
synonym: "salting" NARROW [USGS:SDTS]
synonym: "tidal marsh" RELATED [USGS:SDTS]
synonym: "wetland" BROAD [ADL:FTT]
xref: FTT:1190
xref: FTT:185
xref: Geonames:MRSHN
xref: TGN:21323
is_a: ENVO:00000017 ! saline hydrographic feature
is_a: ENVO:00000035 ! marsh
is_a: ENVO:00000240 ! saline wetland

[Term]
id: ENVO:00000055
name: saline evaporation pond
def: "A shallow man-made pond designed to produce salt from sea water. The seawater is fed into large ponds and water is drawn out through natural evaporation which allows the salt to be subsequently harvested." [wiki:http\://en.wikipedia.org/wiki/Salt_evaporation_ponds]
synonym: "lake" BROAD [ADL:FTT]
synonym: "salt evaporation pond" EXACT [Geonames:feature]
synonym: "salt evaporation pond" EXACT [ADL:FTT]
synonym: "salt pond" RELATED [Geonames:feature]
synonym: "salt pond" RELATED [ADL:FTT]
synonym: "salt ponds" RELATED [Geonames:feature]
synonym: "saltern" RELATED []
xref: FTT:221
xref: FTT:906
xref: FTT:908
xref: Geonames:MFGN
xref: Geonames:PNDN
xref: Geonames:PNDSN
is_a: ENVO:00000017 ! saline hydrographic feature

[Term]
id: ENVO:00000056
name: fishpond
def: "A pond or lake used for the artificial culture of fish." [MA:ma]
synonym: "fish pond" EXACT [ADL:FTT]
synonym: "fishponds" EXACT [Geonames:feature]
synonym: "lake" BROAD [ADL:FTT]
xref: FTT:221
xref: FTT:696
xref: FTT:701
xref: Geonames:PNDSF
is_a: ENVO:00000063 ! water body

[Term]
id: ENVO:00000057
name: mangrove swamp
def: "An swamp formed of trees and shrubs that grow in saline coastal habitats in the tropics and subtropics." [MA:ma]
synonym: "mangal" EXACT []
synonym: "mangrove swamp" EXACT [Geonames:feature]
synonym: "MangroveForest" RELATED [NASA:earthrealm]
synonym: "wetland" BROAD [ADL:FTT]
synonym: "wetland" BROAD [USGS:SDTS]
synonym: "woodland" BROAD [USGS:SDTS]
xref: FTT:185
xref: FTT:934
xref: Geonames:MGV
is_a: ENVO:00000230 ! coastal wetland

[Term]
id: ENVO:00000058
name: underground lake
def: "A lake which is formed under the surface of the Earth. Such a lake may be associated with caves and aquifers and springs." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
synonym: "cave" RELATED [ADL:FTT]
synonym: "underground lake" EXACT [Geonames:feature]
xref: FTT:445
xref: FTT:449
xref: Geonames:LKSB
xref: TGN:21188
is_a: ENVO:00000020 ! lake
is_a: ENVO:00000061 ! underground water body

[Term]
id: ENVO:00000059
name: underground river
def: "A river that is under the surface of the Earth." [MA:ma]
xref: TGN:21187
is_a: ENVO:00000060 ! underground stream

[Term]
id: ENVO:00000060
name: underground stream
def: "A stream that is under the surface of the Earth." [MA:ma]
is_a: ENVO:00000023 ! stream
is_a: ENVO:00000061 ! underground water body

[Term]
id: ENVO:00000061
name: underground water body
def: "A geographical feature associated with water that is under the surface of the earth." [MA:ma]
is_a: ENVO:00000063 ! water body

[Term]
id: ENVO:00000062
name: populated place
def: "Place or area with clustered or scattered buildings and a permanent human population." [USGS:http\://mapping.usgs.gov/www/ti/GNIS/gnis_users_guide_appendixc.html]
synonym: "inhabited place" EXACT [Getty:TGN]
synonym: "inhabited region" RELATED []
synonym: "place" BROAD [USGS:SDTS]
synonym: "populated locality" RELATED []
synonym: "populated place" EXACT [Geonames:feature]
synonym: "populated places" EXACT [Geonames:feature]
synonym: "settlement" RELATED [USGS:SDTS]
xref: FTT:1097
xref: FTT:33
xref: Geonames:PPL
xref: Geonames:PPLS
xref: TGN:22201
xref: TGN:83002
is_a: ENVO:00000002 ! anthropogenic feature

[Term]
id: ENVO:00000063
name: water body
synonym: "aquatic feature" EXACT []
synonym: "bodies of water" EXACT [Getty:TGN]
synonym: "body of water" EXACT [Getty:TGN]
synonym: "body of water" EXACT [ADL:FTT]
synonym: "hydrographic feature" BROAD [ADL:FTT]
synonym: "waterbody" EXACT []
xref: FTT:131
xref: FTT:280
xref: FTT:827
xref: TGN:21100
xref: TGN:21101
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000064
name: road
def: "An open way for the passage of vehicles, persons, or animals on land." [USGS:SDTS]
synonym: "accessway" RELATED [USGS:SDTS]
synonym: "alley" RELATED [USGS:SDTS]
synonym: "avenue" RELATED [USGS:SDTS]
synonym: "board walk" NARROW [USGS:SDTS]
synonym: "boulevard" RELATED [USGS:SDTS]
synonym: "caravan route" NARROW [ADL:FTT]
synonym: "cart track" RELATED [USGS:SDTS]
synonym: "causeway" NARROW [ADL:FTT]
synonym: "drive" NARROW [ADL:FTT]
synonym: "drove" RELATED [ADL:FTT]
synonym: "farm lane" RELATED [USGS:SDTS]
synonym: "freeway" RELATED [USGS:SDTS]
synonym: "highway" NARROW [ADL:FTT]
synonym: "highway" NARROW [Getty:TGN]
synonym: "highway" NARROW [USGS:SDTS]
synonym: "intersection" NARROW [ADL:FTT]
synonym: "lane" RELATED []
synonym: "parkway" NARROW [ADL:FTT]
synonym: "parkway" NARROW [Getty:TGN]
synonym: "road" EXACT [Geonames:feature]
synonym: "ROAD" EXACT [USGS:SDTS]
synonym: "road bend" NARROW [ADL:FTT]
synonym: "road junction" NARROW [ADL:FTT]
synonym: "roadway" RELATED [ADL:FTT]
synonym: "street" RELATED [Geonames:feature]
synonym: "street" RELATED [ADL:FTT]
synonym: "street" RELATED [Getty:TGN]
synonym: "street" RELATED [USGS:SDTS]
synonym: "thorofare" RELATED [USGS:SDTS]
synonym: "thoroughfare" RELATED [USGS:SDTS]
synonym: "thruway" RELATED [USGS:SDTS]
synonym: "traffic circle" NARROW [ADL:FTT]
synonym: "turnpike" RELATED [USGS:SDTS]
xref: FTT:1058
xref: FTT:1183
xref: FTT:1185
xref: FTT:1187
xref: FTT:431
xref: FTT:443
xref: FTT:646
xref: FTT:798
xref: FTT:884
xref: Geonames:R
xref: Geonames:RD
xref: Geonames:ST
xref: TGN:53151
xref: TGN:53153
xref: TGN:53154
xref: TGN:53157
is_a: ENVO:00000010 ! transport feature

[Term]
id: ENVO:00000065
name: railway
def: "A permanent way having one or more rails which provides a track for cars." [USGS:SDTS]
synonym: "railroad" EXACT [USGS:SDTS]
synonym: "railroad" EXACT [Getty:TGN]
synonym: "railroad" EXACT [Geonames:feature]
synonym: "railroad feature" BROAD [ADL:FTT]
synonym: "RAILWAY" EXACT [USGS:SDTS]
xref: FTT:1132
xref: FTT:960
xref: Geonames:R
xref: Geonames:RR
xref: TGN:53155
is_a: ENVO:00000010 ! transport feature

[Term]
id: ENVO:00000066
name: man-made tunnel
def: "A tunnel constructed by human means." [MA:ma]
synonym: "canal tunnel" NARROW [ADL:FTT]
synonym: "railroad tunnel" NARROW [ADL:FTT]
synonym: "railroad tunnel" NARROW [Geonames:feature]
synonym: "road tunnel" NARROW [ADL:FTT]
synonym: "road tunnel" NARROW [Geonames:feature]
synonym: "tunnel" EXACT [ADL:FTT]
synonym: "tunnel" EXACT [Geonames:feature]
synonym: "tunnels" EXACT [Geonames:feature]
synonym: "underpass" NARROW [USGS:SDTS]
xref: FTT:1136
xref: FTT:1184
xref: FTT:396
xref: FTT:397
xref: Geonames:TNL
xref: Geonames:TNLRD
xref: Geonames:TNLRR
xref: Geonames:TNLS
xref: TGN:51845
is_a: ENVO:00000068 ! tunnel

[Term]
id: ENVO:00000067
name: cave
def: "Naturally formed, subterranean open area or chamber." [USGS:SDTS]
synonym: "cave" RELATED [Geonames:feature]
synonym: "Cave" RELATED [NASA:earthrealm]
synonym: "CAVE" EXACT [USGS:SDTS]
synonym: "cavern" RELATED [USGS:SDTS]
synonym: "cavern" RELATED [ADL:FTT]
synonym: "grotto" RELATED [USGS:SDTS]
synonym: "grotto" RELATED [ADL:FTT]
synonym: "notch" RELATED [USGS:SDTS]
xref: FTT:1071
xref: FTT:443
xref: FTT:445
xref: FTT:446
xref: FTT:447
xref: Geonames:CAVE
xref: TGN:21485
xref: TGN:21486
relationship: part_of ENVO:00000013 ! cave system

[Term]
id: ENVO:00000068
name: tunnel
def: "An underground or underwater passage." [USGS:SDTS]
synonym: "cave" RELATED [ADL:FTT]
synonym: "natural tunnel" RELATED [Getty:TGN]
synonym: "natural tunnel" RELATED [Geonames:feature]
synonym: "TUNNEL" EXACT [USGS:SDTS]
xref: FTT:445
xref: FTT:448
xref: Geonames:TNLN
xref: TGN:21447
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000069
name: distributary
def: "A stream that branches off and flows away from a main stream channel. They are a common feature of river deltas." [wiki:http\://en.wikipedia.org/wiki/Distributary]
synonym: "distributary" EXACT [ADL:FTT]
synonym: "distributary" EXACT [Geonames:feature]
synonym: "stream" BROAD [ADL:FTT]
synonym: "stream distributary" NARROW [Getty:TGN]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:636
xref: Geonames:STMD
is_a: ENVO:00000023 ! stream

[Term]
id: ENVO:00000070
name: constructed feature
def: "A feature that has been constructed by deliberate human effort." [MA:ma]
is_a: ENVO:00000002 ! anthropogenic feature

[Term]
id: ENVO:00000071
name: fault cave
def: "A cave developed along a fault or fault zone, either by movement of the fault or by preferential solution along it." [web:http\://wasg.iinet.net.au/terminol.html]
is_a: ENVO:00000067 ! cave

[Term]
id: ENVO:00000072
name: aquaduct
def: "Structure designed to transport water from a remote source, usually by gravity." [ADL:FTT]
synonym: "aqueduct" EXACT [USGS:SDTS]
synonym: "aqueduct" EXACT [Getty:TGN]
synonym: "aqueduct" EXACT [Geonames:feature]
synonym: "WATERCOURSE BRIDGE" RELATED [USGS:SDTS]
xref: FTT:128
xref: Geonames:CNLA
xref: TGN:51258
is_a: ENVO:00000014 ! canal

[Term]
id: ENVO:00000073
name: building
def: "A permanent walled and roofed construction." [USGS:SDTS]
synonym: "building" EXACT [Geonames:feature]
synonym: "BUILDING" EXACT [USGS:SDTS]
xref: FTT:42
xref: Geonames:BLDG
xref: TGN:51011
is_a: ENVO:00000070 ! constructed feature

[Term]
id: ENVO:00000074
name: dam
def: "A barrier constructed across a watercourse to control the flow or raise the level of water." [USGS:SDTS]
synonym: "barrage" RELATED [USGS:SDTS]
synonym: "DAM" EXACT [USGS:SDTS]
synonym: "Dam" EXACT [NASA:earthrealm]
synonym: "dam" EXACT [Geonames:feature]
synonym: "dam site" RELATED [ADL:FTT]
xref: FTT:599
xref: FTT:600
xref: Geonames:DAM
xref: TGN:51253
is_a: ENVO:00000070 ! constructed feature

[Term]
id: ENVO:00000075
name: bridge
def: "A built structure erected over a depression or obstacle to carry traffic or some facility such as a pipeline." [USGS:SDTS]
synonym: "bridge" EXACT [Geonames:feature]
synonym: "BRIDGE" EXACT [USGS:SDTS]
synonym: "covered bridge" NARROW [USGS:SDTS]
synonym: "footbridge" NARROW [USGS:SDTS]
synonym: "overpass" NARROW [USGS:SDTS]
xref: FTT:297
xref: Geonames:BDG
xref: TGN:51841
is_a: ENVO:00000010 ! transport feature

[Term]
id: ENVO:00000076
name: mine
def: "An excavation in the Earth for the purpose of extracting earth materials." [USGS:SDTS]
synonym: "MINE" EXACT [USGS:SDTS]
synonym: "mine site" BROAD [ADL:FTT]
synonym: "mine site" BROAD [Geonames:feature]
xref: FTT:14
xref: FTT:968
xref: Geonames:MN
xref: Geonames:MNA
xref: TGN:54211
xref: TGN:54212
is_a: ENVO:00000070 ! constructed feature

[Term]
id: ENVO:00000077
name: agricultural feature
synonym: "agricultural colony" RELATED [Geonames:feature]
synonym: "agricultural facility" RELATED [ADL:FTT]
synonym: "agricultural land" RELATED [Getty:TGN]
synonym: "agricultural reserve" RELATED [ADL:FTT]
synonym: "agricultural reserve" RELATED [Geonames:feature]
synonym: "agricultural site" RELATED [ADL:FTT]
synonym: "AgriculturalLands" RELATED [NASA:earthrealm]
synonym: "bailing station" NARROW [ADL:FTT]
synonym: "barn" NARROW [ADL:FTT]
synonym: "cattle dipping tank" NARROW [ADL:FTT]
synonym: "corral" NARROW [ADL:FTT]
synonym: "dairy" NARROW [ADL:FTT]
synonym: "feedlot" NARROW [ADL:FTT]
synonym: "grange" NARROW [ADL:FTT]
synonym: "grazing allotment" NARROW [ADL:FTT]
synonym: "irrigated field" NARROW [ADL:FTT]
synonym: "nursery" NARROW [ADL:FTT]
synonym: "nursery" NARROW [Geonames:feature]
synonym: "pastoral site" NARROW [ADL:FTT]
synonym: "sheepfold" NARROW [ADL:FTT]
synonym: "stockyard" NARROW [ADL:FTT]
xref: FTT:1246
xref: FTT:1247
xref: FTT:44
xref: FTT:45
xref: FTT:46
xref: FTT:48
xref: FTT:50
xref: FTT:51
xref: FTT:52
xref: FTT:57
xref: FTT:60
xref: FTT:62
xref: FTT:63
xref: FTT:64
xref: FTT:72
xref: FTT:74
xref: Geonames:AGRC
xref: Geonames:NSY
xref: Geonames:RESA
xref: TGN:55001
is_a: ENVO:00000002 ! anthropogenic feature

[Term]
id: ENVO:00000078
name: farm
def: "A tract of crop or grazing land, as well as the group of buildings with and often surrounding a farmhouse, including barns, sheds, and other outbuildings, used for agricultural production." [USGS:SDTS]
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "farm" RELATED [Geonames:feature]
synonym: "FARM" EXACT [USGS:SDTS]
synonym: "farms" RELATED [Geonames:feature]
synonym: "farmstead" RELATED [ADL:FTT]
synonym: "nursery" RELATED [USGS:SDTS]
synonym: "ranch" RELATED [USGS:SDTS]
synonym: "ranch" RELATED [Getty:TGN]
synonym: "ranch" RELATED [Geonames:feature]
xref: FTT:45
xref: FTT:58
xref: FTT:59
xref: FTT:69
xref: Geonames:FRM
xref: Geonames:FRMS
xref: Geonames:RNCH
xref: TGN:54011
is_a: ENVO:00000077 ! agricultural feature

[Term]
id: ENVO:00000079
name: flume
def: "An open artificial water channel, that leads water from a diversion dam or weir completely aside a natural flow, often an elevated box structure (typically wood) that follows the natural contours of the land." [wiki:http\://en.wikipedia.org/wiki/Flume]
synonym: "canal" RELATED [ADL:FTT]
synonym: "flume (manmade)" EXACT [ADL:FTT]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:129
xref: FTT:404
is_a: ENVO:00000014 ! canal

[Term]
id: ENVO:00000080
name: mountain range
def: "A series of connected and aligned mountains or mountain ridges." [USGS:SDTS]
synonym: "cordillera" RELATED [ADL:FTT]
synonym: "MOUNT RANGE" EXACT [USGS:SDTS]
synonym: "mountain chain" RELATED []
synonym: "mountain group" RELATED []
synonym: "mountain range" RELATED [Geonames:feature]
synonym: "mountain system" RELATED [Getty:TGN]
synonym: "sierra" RELATED [ADL:FTT]
xref: FTT:548
xref: FTT:995
xref: FTT:997
xref: Geonamaes:MTS
xref: TGN:21431
xref: TGN:21432
is_a: ENVO:00000478 ! range of mounts

[Term]
id: ENVO:00000081
name: mountain
def: "A landform that extends above the surrounding terrain in a limited area. A mountain is generally steeper than a hill, but there is no universally accepted standard definition for the height of a mountain or a hill although a mountain usually has an identifiable summit and a local relief of more than 300m." [wiki:http\://en.wikipedia.org/wiki/Mountain#United_Kingdom]
synonym: "cerro" RELATED [ADL:FTT]
synonym: "cordillera" RELATED [ADL:FTT]
synonym: "foothill" NARROW [ADL:FTT]
synonym: "foothill" NARROW [USGS:SDTS]
synonym: "knoll" RELATED [ADL:FTT]
synonym: "knoll" RELATED [USGS:SDTS]
synonym: "mound" RELATED [USGS:SDTS]
synonym: "mount" RELATED [USGS:SDTS]
synonym: "mountain" RELATED [Geonames:feature]
synonym: "Mountain" EXACT [NASA:earthrealm]
synonym: "mountains" RELATED [Geonames:feature]
xref: FTT:1000
xref: FTT:118
xref: FTT:460
xref: FTT:548
xref: FTT:713
xref: FTT:896
xref: FTT:993
xref: Geonames:MT
xref: Geonames:MTS
xref: TGN:21430
xref: TGN:21434
is_a: ENVO:00000477 ! mount

[Term]
id: ENVO:00000082
name: hill range
def: "A group of hills bordered by lowlands." [MA:ma]
is_a: ENVO:00000478 ! range of mounts

[Term]
id: ENVO:00000083
name: hill
def: "A rounded elevation of limited extent rising above the surrounding land with local relief of less than 300m." [Geonames:feature]
synonym: "cerro" RELATED []
synonym: "foothill" RELATED [ADL:FTT]
synonym: "foothill" RELATED [USGS:SDTS]
synonym: "hill" RELATED [Geonames:feature]
synonym: "hillock" RELATED [USGS:SDTS]
synonym: "hills" RELATED [Geonames:feature]
synonym: "knoll" RELATED [USGS:SDTS]
synonym: "mount" RELATED [USGS:SDTS]
synonym: "mountain" RELATED [ADL:FTT]
xref: FTT:118
xref: FTT:468
xref: FTT:713
xref: FTT:799
xref: FTT:896
xref: Geonames:HLL
xref: Geonames:HLLS
xref: TGN:21437
xref: TGN:21438
is_a: ENVO:00000477 ! mount

[Term]
id: ENVO:00000084
name: mountain pass
def: "A lower point that allows easier access through a mountain range. A pass has the general form of a saddle between two mountains." [wiki:http\://en.wikipedia.org/wiki/Mountain_pass]
synonym: "col" RELATED [USGS:SDTS]
synonym: "col" RELATED [ADL:FTT]
synonym: "defile" RELATED [ADL:FTT]
synonym: "defile" RELATED [USGS:SDTS]
synonym: "gap" RELATED [USGS:SDTS]
synonym: "gap" RELATED [Getty:TGN]
synonym: "notch" RELATED [USGS:SDTS]
synonym: "pass" RELATED [ADL:FTT]
synonym: "pass" EXACT [Geonames:feature]
synonym: "saddle" RELATED [Getty:TGN]
synonym: "saddle" RELATED [USGS:SDTS]
synonym: "saddle" RELATED [Geonames:feature]
synonym: "saddle (physiographic)" RELATED [ADL:FTT]
synonym: "sill (physiographic)" RELATED [ADL:FTT]
xref: FTT:510
xref: FTT:612
xref: FTT:738
xref: FTT:739
xref: FTT:740
xref: Geonames:GAP
xref: Geonames:PASS
xref: Geonames:SDL
xref: TGN:21433
xref: TGN:21436
xref: TGN:21524
relationship: part_of ENVO:00000080 ! mountain range

[Term]
id: ENVO:00000085
name: alpine glacier
def: "A glacier found in mountain terrain." [wiki:http\://en.wikipedia.org/wiki/Glacier#Types]
is_a: ENVO:00000133 ! glacier

[Term]
id: ENVO:00000086
name: plain
def: "A region of general uniform slope, comparatively level, and of considerable extent." [USGS:SDTS]
synonym: "interfluve" RELATED [ADL:FTT]
synonym: "llanos" RELATED [ADL:FTT]
synonym: "outwash plain" RELATED [USGS:SDTS]
synonym: "PLAIN" EXACT [USGS:SDTS]
synonym: "Plain" EXACT [NASA:earthrealm]
synonym: "plain" EXACT [Geonames:feature]
xref: FTT:707
xref: FTT:874
xref: FTT:926
xref: Geonames:PLN
xref: TGN:21461
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000087
name: cliff
def: "A high, steep, or overhanging face of rock." [USGS:SDTS]
synonym: "beach scarp" RELATED [USGS:SDTS]
synonym: "bluff" RELATED [ADL:FTT]
synonym: "bluff" RELATED [USGS:SDTS]
synonym: "ceja" RELATED [USGS:SDTS]
synonym: "cliff" EXACT [Geonames:feature]
synonym: "CLIFF" EXACT [USGS:SDTS]
synonym: "ice cliff" RELATED [USGS:SDTS]
synonym: "palisade" RELATED [USGS:SDTS]
synonym: "precipice" RELATED [USGS:SDTS]
synonym: "scar" RELATED [USGS:SDTS]
synonym: "scarp" RELATED [USGS:SDTS]
synonym: "scaw" RELATED [USGS:SDTS]
synonym: "scraps" RELATED [ADL:FTT]
xref: FTT:268
xref: FTT:269
xref: FTT:491
xref: FTT:492
xref: Geonames:CLF
xref: TGN:21487
xref: TGN:21488
is_a: ENVO:00000176 ! elevation

[Term]
id: ENVO:00000088
name: sea cliff
def: "A cliff that is a margin of a sea or ocean." [MA:ma]
synonym: "coastal cliff" RELATED []
synonym: "marine cliff" RELATED [USGS:SDTS]
is_a: ENVO:00000087 ! cliff
relationship: part_of ENVO:00000303 ! coast

[Term]
id: ENVO:00000089
name: inland cliff
synonym: "crag" RELATED [ADL:FTT]
synonym: "crag" RELATED [USGS:SDTS]
xref: FTT:589
is_a: ENVO:00000087 ! cliff

[Term]
id: ENVO:00000090
name: coastal plain
def: "An area of flat, low-lying land adjacent to a seacoast and separated from the interior by other features." [wiki:http\://en.wikipedia.org/wiki/Coastal_plain]
synonym: "coast" BROAD [ADL:FTT]
synonym: "coastal zone" EXACT [ADL:FTT]
synonym: "intertidal zone" NARROW [ADL:FTT]
synonym: "offshore area" NARROW [ADL:FTT]
synonym: "plain, coast" EXACT [USGS:SDTS]
synonym: "shore" NARROW [ADL:FTT]
synonym: "shoreline" NARROW [ADL:FTT]
xref: FTT:240
xref: FTT:499
xref: FTT:500
xref: FTT:501
xref: FTT:502
xref: FTT:503
xref: FTT:504
is_a: ENVO:00000086 ! plain

[Term]
id: ENVO:00000091
name: beach
def: "A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a body of water." [wiki:http\://en.wikipedia.org/wiki/Beach]
synonym: "beach" RELATED [Geonames:feature]
synonym: "Beach" EXACT [NASA:earthrealm]
synonym: "beach berm" NARROW [USGS:SDTS]
synonym: "beaches" RELATED [Geonames:feature]
synonym: "foreshore flats" RELATED [USGS:SDTS]
synonym: "lagoon beach" NARROW [USGS:SDTS]
synonym: "rivage" RELATED [USGS:SDTS]
synonym: "strand" RELATED [ADL:FTT]
synonym: "strand" RELATED [USGS:SDTS]
xref: FTT:237
xref: FTT:239
xref: Geonames:BCH
xref: Geonames:BCHS
xref: TGN:21482
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000092
name: sea beach
def: "A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a sea." [wiki:http\://en.wikipedia.org/wiki/Beach]
synonym: "strand" EXACT []
is_a: ENVO:00000091 ! beach
relationship: part_of ENVO:00000303 ! coast

[Term]
id: ENVO:00000093
name: lacustrine beach
def: "A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a lake." [MA:ma]
is_a: ENVO:00000091 ! beach

[Term]
id: ENVO:00000094
name: volcanic feature
def: "A feature associated with a volcano, an opening, or rupture, in the Earth's surface or crust, which allows hot, molten rock, ash and gases to escape from deep below the surface." [wiki:http\://en.wikipedia.org/wiki/Volcano]
synonym: "volcanic landform" RELATED [Getty:TGN]
xref: FTT:591
xref: TGN:21407
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000095
name: lava field
def: "A feature formed by cooled lava, the molten rock that is expelled by a volcano during an eruption." [MA:ma]
synonym: "lava area" EXACT [Geonames:feature]
synonym: "lava area" EXACT [ADL:FTT]
synonym: "lava flow" RELATED [Getty:TGN]
synonym: "lava plain" RELATED []
xref: FTT:916
xref: FTT:917
xref: Geonames:LAVA
xref: TGN:21612
is_a: ENVO:00000094 ! volcanic feature

[Term]
id: ENVO:00000096
name: caldera
def: "A feature formed by the collapse of land following a volcanic eruption." [wiki:http\://en.wikipedia.org/wiki/Caldera]
synonym: "caldera" EXACT [Geonames:feature]
synonym: "crater" RELATED [USGS:SDTS]
xref: FTT:384
xref: Geonames:CLDA
xref: TGN:21409
relationship: part_of ENVO:00000247 ! volcano

[Term]
id: ENVO:00000097
name: desert
def: "A region rendered barren or partially barren by environmental extremes, especially by low rainfall." [USGS:SDTS]
synonym: "arid region" RELATED [ADL:FTT]
synonym: "DESERT" EXACT [USGS:SDTS]
synonym: "desert" EXACT [Geonames:feature]
xref: FTT:1
xref: FTT:188
xref: Geonames:DSRT
xref: TGN:21201
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000098
name: island
def: "Area of dry or relatively dry land surrounded by water or low wetland." [USGS:SDTS]
synonym: "barrier island" RELATED [USGS:SDTS]
synonym: "BarrierIsland" NARROW [NASA:earthrealm]
synonym: "cay" RELATED [USGS:SDTS]
synonym: "cay" RELATED [ADL:FTT]
synonym: "eyot" RELATED []
synonym: "holm" RELATED []
synonym: "hummock" RELATED [USGS:SDTS]
synonym: "island" EXACT [Geonames:feature]
synonym: "ISLAND" EXACT [USGS:SDTS]
synonym: "island arc" RELATED [ADL:FTT]
synonym: "IslandArc" RELATED [NASA:earthrealm]
synonym: "islands" EXACT [Geonames:feature]
synonym: "isle" RELATED [ADL:FTT]
synonym: "islet" RELATED [ADL:FTT]
synonym: "islet" RELATED [Getty:TGN]
synonym: "islet" RELATED [USGS:SDTS]
synonym: "key" RELATED [USGS:SDTS]
synonym: "key (island)" RELATED [ADL:FTT]
xref: FTT:147
xref: FTT:450
xref: FTT:886
xref: FTT:887
xref: FTT:888
xref: FTT:889
xref: Geonames:ISL
xref: Geonames:ISLS
xref: TGN:21468
xref: TGN:21469
xref: TGN:21471
xref: TGN:21475
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000099
name: artificial island
def: "An island constructed by human effort." [MA:ma]
synonym: "artificial island" EXACT [Geonames:feature]
synonym: "offshore platform" RELATED [ADL:FTT]
xref: FTT:1023
xref: FTT:171
xref: Geonames:ISLF
is_a: ENVO:00000098 ! island

[Term]
id: ENVO:00000100
name: valley
def: "A depression caused by erosion by water or ice. Low-lying land bordered by higher ground; especially elongate, relatively large gently sloping depressions of the Earth's surface, commonly situated between two mountains or between ranges of hills or mountains, and often containing a stream with an outlet." [ADL:FTT]
synonym: "chasm" NARROW [USGS:SDTS]
synonym: "coulee" NARROW [USGS:SDTS]
synonym: "dale" NARROW [USGS:SDTS]
synonym: "glacial gorge" NARROW [USGS:SDTS]
synonym: "glacial trough" NARROW [USGS:SDTS]
synonym: "glen" RELATED [ADL:FTT]
synonym: "glen" RELATED [USGS:SDTS]
synonym: "goe" RELATED [USGS:SDTS]
synonym: "gorge" RELATED [USGS:SDTS]
synonym: "gorge" RELATED [Geonames:feature]
synonym: "graben" RELATED [USGS:SDTS]
synonym: "gulch" NARROW [USGS:SDTS]
synonym: "gully" NARROW [USGS:SDTS]
synonym: "gully" NARROW [Getty:TGN]
synonym: "hollow" RELATED [USGS:SDTS]
synonym: "hollow" RELATED [Getty:TGN]
synonym: "hollow" RELATED [ADL:FTT]
synonym: "lavaka" RELATED []
synonym: "median valley" NARROW [ADL:FTT]
synonym: "median valley" NARROW [Geonames:feature]
synonym: "moat" RELATED [USGS:SDTS]
synonym: "ravine" RELATED [USGS:SDTS]
synonym: "re-entrant" RELATED [USGS:SDTS]
synonym: "seachannel" RELATED [USGS:SDTS]
synonym: "shelf valley" NARROW [Geonames:feature]
synonym: "strath" RELATED [USGS:SDTS]
synonym: "trench" RELATED [USGS:SDTS]
synonym: "vale" RELATED []
synonym: "valley" EXACT [Geonames:feature]
synonym: "VALLEY" EXACT [USGS:SDTS]
synonym: "valleys" EXACT [Geonames:feature]
synonym: "water gap" RELATED [USGS:SDTS]
xref: FTT:158
xref: FTT:166
xref: FTT:418
xref: FTT:761
xref: FTT:811
xref: FTT:949
xref: Geonames:GRGE
xref: Geonames:VAL
xref: Geonames:VALS
xref: TGN:21425
xref: TGN:21451
xref: TGN:21452
xref: TGN:21453
is_a: ENVO:00000309 ! depression

[Term]
id: ENVO:00000101
name: delta
def: "A tract of alluvium formed at the mouth of a river where the deposition ofsome of its load exceeds its rate of removal, crossed by the divergent channels (distributaries) of the river." [USGS:SDTS]
synonym: "alluvial fan" RELATED [USGS:SDTS]
synonym: "bay delta" RELATED [USGS:SDTS]
synonym: "canyon delta" RELATED [USGS:SDTS]
synonym: "DELTA" EXACT [USGS:SDTS]
synonym: "Delta" EXACT [NASA:earthrealm]
synonym: "delta" EXACT [Geonames:feature]
synonym: "fan" RELATED [USGS:SDTS]
synonym: "fan delta" RELATED [USGS:SDTS]
synonym: "outwash" RELATED [USGS:SDTS]
synonym: "outwash plain" RELATED [USGS:SDTS]
synonym: "pass (delta)" RELATED [Getty:TGN]
xref: FTT:97
xref: Geonames:DLTA
xref: TGN:21164
xref: TGN:21422
is_a: ENVO:00000386 ! river mouth

[Term]
id: ENVO:00000102
name: cave entrance
synonym: "Cueva de Altamira" EXACT []
xref: FTT:444
relationship: part_of ENVO:00000067 ! cave

[Term]
id: ENVO:00000103
name: mangrove island
def: "An island formed of trees and shrubs that grow in saline coastal habitats in the tropics and subtropics." [wiki:http\://en.wikipedia.org/wiki/Mangrove]
synonym: "island" BROAD [ADL:FTT]
synonym: "mangrove island" EXACT [Geonames:feature]
xref: FTT:147
xref: FTT:891
xref: Geonames:ISLM
is_a: ENVO:00000057 ! mangrove swamp
is_a: ENVO:00000098 ! island

[Term]
id: ENVO:00000104
name: undersea feature
synonym: "basin" NARROW [Geonames:feature]
synonym: "escarpment" NARROW [Geonames:feature]
synonym: "fan" NARROW [Geonames:feature]
synonym: "flat" NARROW [Geonames:feature]
synonym: "fork" NARROW [Geonames:feature]
synonym: "forks" NARROW [Geonames:feature]
synonym: "furrow" NARROW [Geonames:feature]
synonym: "gap" NARROW [Geonames:feature]
synonym: "gully" NARROW [Geonames:feature]
synonym: "hole" NARROW [Geonames:feature]
synonym: "hole (seafloor)" NARROW [ADL:FTT]
synonym: "ledge" NARROW [Geonames:feature]
synonym: "levee" NARROW [Geonames:feature]
synonym: "median valley" NARROW [Geonames:feature]
synonym: "moat (seafloor)" NARROW [ADL:FTT]
synonym: "ocean floor feature" RELATED [ADL:FTT]
synonym: "pinnacle" NARROW [Geonames:feature]
synonym: "plain" NARROW [Geonames:feature]
synonym: "plateau" NARROW [Geonames:feature]
synonym: "platform" NARROW [Geonames:feature]
synonym: "province" NARROW [Geonames:feature]
synonym: "ramp" NARROW [Geonames:feature]
synonym: "ramp (seafloor)" NARROW [ADL:FTT]
synonym: "ravine" NARROW [Geonames:feature]
synonym: "ridge" NARROW [Geonames:feature]
synonym: "ridges" NARROW [Geonames:feature]
synonym: "rise" NARROW [Geonames:feature]
synonym: "rise (seafloor)" NARROW [ADL:FTT]
synonym: "saddle" NARROW [Geonames:feature]
synonym: "seafloor feature" RELATED [ADL:FTT]
synonym: "shelf edge" NARROW [Geonames:feature]
synonym: "sill" RELATED [Geonames:feature]
synonym: "spur" RELATED [Geonames:feature]
synonym: "subsea feature" RELATED [ADL:FTT]
synonym: "terrace" RELATED [Geonames:feature]
synonym: "tongue (seafloor)" RELATED [ADL:FTT]
synonym: "undersea bank" NARROW [Getty:TGN]
synonym: "undersea basin" NARROW [Getty:TGN]
synonym: "undersea bench" NARROW [Getty:TGN]
synonym: "undersea cliff" NARROW [Getty:TGN]
synonym: "undersea fan" NARROW [Getty:TGN]
synonym: "undersea fork" NARROW [Getty:TGN]
synonym: "undersea fracture zone" NARROW [Getty:TGN]
synonym: "undersea furrow" NARROW [Getty:TGN]
synonym: "undersea gap" NARROW [Getty:TGN]
synonym: "undersea hole" NARROW [Getty:TGN]
synonym: "undersea ledge" NARROW [Getty:TGN]
synonym: "undersea levee" NARROW [Getty:TGN]
synonym: "undersea median valley" NARROW [Getty:TGN]
synonym: "undersea moat" NARROW [Getty:TGN]
synonym: "undersea peak" NARROW [Getty:TGN]
synonym: "undersea pinnacle" NARROW [Getty:TGN]
synonym: "undersea plain" NARROW [Getty:TGN]
synonym: "undersea platform" NARROW [Getty:TGN]
synonym: "undersea ramp" NARROW [Getty:TGN]
synonym: "undersea rise" NARROW [Getty:TGN]
synonym: "undersea saddle" NARROW [Getty:TGN]
synonym: "undersea shelf" NARROW [Getty:TGN]
synonym: "undersea shelf edge" NARROW [Getty:TGN]
synonym: "undersea shelf valley" NARROW [Getty:TGN]
synonym: "undersea sill" NARROW [Getty:TGN]
synonym: "undersea slope" NARROW [Getty:TGN]
synonym: "undersea spur" NARROW [Getty:TGN]
synonym: "undersea terrace" NARROW [Getty:TGN]
synonym: "undersea tongue" NARROW [Getty:TGN]
synonym: "undersea valley" NARROW [Getty:TGN]
synonym: "underwater feature" RELATED [ADL:FTT]
synonym: "valley" RELATED [Geonames:feature]
synonym: "valleys" RELATED [Geonames:feature]
xref: FTT:1020
xref: FTT:1137
xref: FTT:1176
xref: FTT:1193
xref: FTT:1194
xref: FTT:1195
xref: FTT:1196
xref: FTT:5
xref: FTT:810
xref: FTT:984
xref: Geonames:BSNU
xref: Geonames:EDGU
xref: Geonames:ESCU
xref: Geonames:FANU
xref: Geonames:FLTU
xref: Geonames:FRKU
xref: Geonames:FRSU
xref: Geonames:FURU
xref: Geonames:GAPU
xref: Geonames:GLYU
xref: Geonames:HOLU
xref: Geonames:LDGU
xref: Geonames:LEVU
xref: Geonames:MDVU
xref: Geonames:PLFU
xref: Geonames:PLNU
xref: Geonames:PLTU
xref: Geonames:PNLU
xref: Geonames:PRVU
xref: Geonames:RAVU
xref: Geonames:RDGU
xref: Geonames:RDSU
xref: Geonames:RISU
xref: Geonames:RMPU
xref: Geonames:SDLU
xref: Geonames:SHVU
xref: Geonames:SILU
xref: Geonames:SPRU
xref: Geonames:TERU
xref: Geonames:VALU
xref: Geonames:VLSU
xref: TGN:23001
xref: TGN:23116
xref: TGN:23117
xref: TGN:23118
xref: TGN:23135
xref: TGN:23162
xref: TGN:23181
xref: TGN:23182
xref: TGN:23183
xref: TGN:23184
xref: TGN:23188
xref: TGN:23192
xref: TGN:23193
xref: TGN:23194
xref: TGN:23195
xref: TGN:23196
xref: TGN:23211
xref: TGN:23212
xref: TGN:23301
xref: TGN:23411
xref: TGN:23412
xref: TGN:23413
xref: TGN:23415
xref: TGN:23421
xref: TGN:23423
xref: TGN:23424
xref: TGN:23431
xref: TGN:23453
xref: TGN:23461
xref: TGN:23463
xref: TGN:23467
xref: TGN:23550
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000105
name: lake surface
is_a: ENVO:00010504 ! surface
relationship: part_of ENVO:00000020 ! lake

[Term]
id: ENVO:00000106
name: grassland
def: "An area in which grasses (Graminae) are a significant component of the vegetation." [wiki:http\://en.wikipedia.org/wiki/Grassland]
synonym: "down" RELATED [USGS:SDTS]
synonym: "downland" RELATED [USGS:SDTS]
synonym: "downs" RELATED [USGS:SDTS]
synonym: "glade" RELATED [ADL:FTT]
synonym: "glade" RELATED [USGS:SDTS]
synonym: "Grassland" RELATED [NASA:earthrealm]
synonym: "GRASSLAND" EXACT [USGS:SDTS]
synonym: "grassland" EXACT [Geonames:feature]
synonym: "grazing area" RELATED [ADL:FTT]
synonym: "grazing area" RELATED [Getty:TGN]
synonym: "herbaceous area" RELATED [USGS:SDTS]
synonym: "range" RELATED [USGS:SDTS]
xref: FTT:259
xref: FTT:760
xref: FTT:766
xref: Geonames:GRSLD
xref: TGN:21604
xref: TGN:54052
is_a: ENVO:00002009 ! terrestrial habitat

[Term]
id: ENVO:00000107
name: heath
def: "An upland moor or sandy area dominated by low shrubby vegetation including heather." [Geonames:feature]
synonym: "heath" EXACT [Geonames:feature]
synonym: "shrubland" RELATED [ADL:FTT]
synonym: "wetland" RELATED [USGS:SDTS]
synonym: "woodland" RELATED [USGS:SDTS]
xref: FTT:1191
xref: FTT:792
xref: Geonames:HTH
xref: TGN:21609
is_a: ENVO:00002009 ! terrestrial habitat

[Term]
id: ENVO:00000108
name: meadow
def: "A habitat of rolling or flat terrain where grasses predominate. Typically, what is called a meadow has more biodiversity than a grassland as the former contains not only grasses but a significant variety of annual, biennial and perennial plants." [wiki:http\://en.wikipedia.org/wiki/Meadow]
synonym: "grassland" RELATED [ADL:FTT]
synonym: "grassland" RELATED [USGS:SDTS]
synonym: "hay meadow" RELATED [USGS:SDTS]
synonym: "meadow" EXACT [Geonames:feature]
xref: FTT:259
xref: FTT:767
xref: Geonames:MDW
xref: TGN:21613
is_a: ENVO:00000106 ! grassland

[Term]
id: ENVO:00000109
name: woodland
def: "Land having a cover of trees, shrubs, or both." [USGS:SDTS]
synonym: "bamboo" NARROW [USGS:SDTS]
synonym: "break" RELATED [USGS:SDTS]
synonym: "brigalow" NARROW [USGS:SDTS]
synonym: "brush" RELATED [USGS:SDTS]
synonym: "bush" RELATED [USGS:SDTS]
synonym: "caatinga" RELATED [USGS:SDTS]
synonym: "chanaral" RELATED [USGS:SDTS]
synonym: "coniferous forest" RELATED [USGS:SDTS]
synonym: "copse" RELATED [USGS:SDTS]
synonym: "deciduous forest" RELATED [USGS:SDTS]
synonym: "equatorial forest" RELATED [USGS:SDTS]
synonym: "equatorial rain forest" RELATED [USGS:SDTS]
synonym: "garique" RELATED [USGS:SDTS]
synonym: "grove" RELATED [ADL:FTT]
synonym: "grove" RELATED [USGS:SDTS]
synonym: "jungle" RELATED [Getty:TGN]
synonym: "jungle" RELATED [USGS:SDTS]
synonym: "mallee scrub" RELATED [USGS:SDTS]
synonym: "monsoon forest" RELATED [USGS:SDTS]
synonym: "moor" RELATED [USGS:SDTS]
synonym: "mott" RELATED []
synonym: "motte" RELATED [USGS:SDTS]
synonym: "mulga" RELATED [USGS:SDTS]
synonym: "mulga scrub" RELATED [USGS:SDTS]
synonym: "pine grove" NARROW [Geonames:feature]
synonym: "rain forest" RELATED [ADL:FTT]
synonym: "rain forest" RELATED [Getty:TGN]
synonym: "reforested area" RELATED [USGS:SDTS]
synonym: "sagebrush" RELATED [USGS:SDTS]
synonym: "scrub" RELATED [USGS:SDTS]
synonym: "shrub" RELATED [USGS:SDTS]
synonym: "silva" RELATED [USGS:SDTS]
synonym: "stand" RELATED [USGS:SDTS]
synonym: "taiga" RELATED [USGS:SDTS]
synonym: "thicket" RELATED [USGS:SDTS]
synonym: "thorn forest" RELATED [USGS:SDTS]
synonym: "tropical rain forest" RELATED [USGS:SDTS]
synonym: "wood" RELATED [ADL:FTT]
synonym: "wood" RELATED [USGS:SDTS]
synonym: "wood" RELATED [Getty:TGN]
synonym: "wooded area" RELATED [USGS:SDTS]
synonym: "WOODLAND" EXACT [USGS:SDTS]
xref: FTT:1083
xref: FTT:505
xref: FTT:506
xref: FTT:719
xref: FTT:774
xref: Geonames:GRVPN
xref: TGN:21631
xref: TGN:21632
xref: TGN:21641
is_a: ENVO:00002009 ! terrestrial habitat

[Term]
id: ENVO:00000110
name: lava tunnel
def: "A tunnel formed by the flow of molten lava, which has subsequently drained out." [MA:ma]
is_a: ENVO:00000068 ! tunnel
is_a: ENVO:00000094 ! volcanic feature

[Term]
id: ENVO:00000111
name: forest
def: "An area with a high density of trees. A small forest may be called a wood." [wiki:http\://en.wikipedia.org/wiki/Forest]
synonym: "copse" NARROW []
synonym: "forest" RELATED [Geonames:feature]
synonym: "forest reserve" NARROW [ADL:FTT]
synonym: "grove" NARROW [Getty:TGN]
synonym: "national forest" NARROW [ADL:FTT]
synonym: "wood" NARROW [Getty:TGN]
synonym: "woodland" BROAD [USGS:SDTS]
xref: FTT:258
xref: FTT:506
xref: FTT:715
xref: FTT:717
xref: Geonames:FRST
xref: TGN:21641
xref: TGN:21642
xref: TGN:21645
is_a: ENVO:00000109 ! woodland

[Term]
id: ENVO:00000112
name: tundra
def: "Treeless, level, or gently rolling plains characteristic of arctic or subarctic regions, having a permanently frozen subsoil, and usually supporting low growing vegetation such as lichens, mosses, and stunted shrubs." [ADL:FTT]
synonym: "Arctic land" RELATED [ADL:FTT]
synonym: "tundra" EXACT [Geonames:feature]
synonym: "TUNDRA" EXACT [USGS:SDTS]
synonym: "TundraEcosystem" RELATED [NASA:earthrealm]
xref: FTT:151
xref: FTT:152
xref: Geonames:TUND
xref: TGN:21611
is_a: ENVO:00002009 ! terrestrial habitat

[Term]
id: ENVO:00000113
name: cultivated habitat
def: "A geographical feature modified by humans by the preparation of the land, usually for the purposes of growing crops." [MA:ma]
synonym: "agricultural region" RELATED []
synonym: "CROPLAND" RELATED [USGS:SDTS]
synonym: "cropland" NARROW [ADL:FTT]
synonym: "cultivated area" RELATED [Geonames:feature]
synonym: "cultivated area" RELATED [USGS:SDTS]
synonym: "cultivated area" RELATED [ADL:FTT]
synonym: "cultivated cropland" RELATED [ADL:FTT]
synonym: "market garden" RELATED [USGS:SDTS]
synonym: "range" RELATED [ADL:FTT]
synonym: "truck farm" RELATED [USGS:SDTS]
synonym: "truck garden" RELATED [USGS:SDTS]
xref: FTT:1248
xref: FTT:54
xref: FTT:55
xref: FTT:56
xref: Geonames:CULT
is_a: ENVO:00000077 ! agricultural feature
is_a: ENVO:00002036 ! habitat

[Term]
id: ENVO:00000114
name: field
def: "An area of land, usually relatively small, enclosed or otherwise and used for agricultural purposes." [wiki:http\://en.wikipedia.org/wiki/Field_%28agriculture%29]
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "cropland" RELATED [USGS:SDTS]
synonym: "field" EXACT [Geonames:feature]
synonym: "grassland" RELATED [USGS:SDTS]
xref: FTT:45
xref: FTT:61
xref: Geonames:FLD
xref: TGN:21456
is_a: ENVO:00000113 ! cultivated habitat

[Term]
id: ENVO:00000115
name: orchard
def: "An intentional planting of trees or shrubs maintained for food, typically fruit, production." [wiki:http\://en.wikipedia.org/wiki/Orchard]
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "cropland" BROAD [USGS:SDTS]
synonym: "orchard" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:66
xref: Geonames:OCH
xref: TGN:54014
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000116
name: vineyard
def: "A place where grapes are grown for making wine, raisins or table grapes." [wiki:http\://en.wikipedia.org/wiki/Vineyard]
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "cropland" BROAD [USGS:SDTS]
synonym: "vineyard" EXACT [Geonames:feature]
synonym: "vineyards" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:77
xref: Geonames:VIN
xref: Geonames:VINS
xref: TGN:54015
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000117
name: plantation
def: "An intentional planting of a crop, on a large scale, usually for uses other than cereal production or pasture. The term is currently most often used for plantings of trees and shrubs. The term tends also to be used for plantings maintained on economic bases other than that of subsistence farming." [wiki:http\://en.wikipedia.org/wiki/Plantation]
synonym: "agricultural site" RELATED [ADL:FTT]
synonym: "cropland" RELATED [USGS:SDTS]
synonym: "plantation field" RELATED [USGS:SDTS]
xref: FTT:45
xref: FTT:68
xref: TGN:54041
is_a: ENVO:00000113 ! cultivated habitat

[Term]
id: ENVO:00000118
name: coconut plantation
synonym: "coconut grove" RELATED [ADL:FTT]
synonym: "coconut grove" RELATED [Geonames:feature]
synonym: "wood" RELATED [ADL:FTT]
xref: FTT:505
xref: FTT:506
xref: Geonames:GRVC
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000119
name: planted forest
def: "A forest that has been intentionally established by human intervention." [MA:ma]
is_a: ENVO:00000111 ! forest
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000120
name: oil palm plantation
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "oil palm plantation" EXACT [Geonames:feature]
synonym: "palm grove" RELATED [Geonames:feature]
xref: FTT:45
xref: FTT:65
xref: Geonames:ESTO
xref: Geonames:GRVP
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000121
name: artificial channel
synonym: "flume" RELATED []
synonym: "improved channel" RELATED [USGS:SDTS]
is_a: ENVO:00000395 ! channel

[Term]
id: ENVO:00000122
name: track
def: "A small road, generally not paved." [MA:ma]
synonym: "footpath" RELATED [USGS:SDTS]
synonym: "path" RELATED [USGS:SDTS]
synonym: "trail" RELATED [Geonames:feature]
synonym: "trail" RELATED [ADL:FTT]
synonym: "trail" RELATED [USGS:SDTS]
synonym: "trail" RELATED [Getty:TGN]
xref: FTT:1057
xref: Geonames:TRL
xref: TGN:53158
is_a: ENVO:00000064 ! road

[Term]
id: ENVO:00000123
name: political entity
def: "A geographical region whose affairs and population are administered by an authority." [MA:ma]
synonym: "political entity" RELATED [Geonames:feature]
xref: FTT:1093
xref: Geonames:PCL
xref: TGN:80002
is_a: ENVO:00000004 ! administrative region

[Term]
id: ENVO:00000124
name: supranational geopolitical entity
def: "A political entitity established by more than one state and with at least some influence over the affairs of its member states." [MA:ma]
is_a: ENVO:00000123 ! political entity

[Term]
id: ENVO:00000125
name: mineral spring
def: "A spring whose water contains a significant amount of dissolved minerals, that derive from the rocks through which the water flows." [wiki:http\://en.wikipedia.org/wiki/Mineral_spring]
synonym: "spring" BROAD [USGS:SDTS]
synonym: "spring (hydrographic)" BROAD [ADL:FTT]
xref: FTT:981
xref: FTT:982
is_a: ENVO:00000027 ! spring

[Term]
id: ENVO:00000126
name: sulfur spring
def: "A spring whose water contains a significant amount of dissolved derivatives of sulfur." [MA:ma]
synonym: "spring (hydrographic)" BROAD [ADL:FTT]
synonym: "sulphur spring" EXACT [Geonames:feature]
xref: FTT:1215
xref: FTT:982
xref: Geonames:SPNS
is_a: ENVO:00000027 ! spring

[Term]
id: ENVO:00000127
name: badland
def: "An arid terrain with clay-rich soil that has been extensively eroded by wind and water." [wiki:http\://en.wikipedia.org/wiki/Badland]
synonym: "badlands" EXACT [Geonames:feature]
synonym: "barren land" BROAD [ADL:FTT]
xref: FTT:186
xref: FTT:187
xref: Geonames:BDLD
xref: TGN:21205
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000128
name: dry valley
def: "A valley that no longer has a surface flow of water. Typically found in either Karst (limestone) or chalk terrain." [wiki:http\://en.wikipedia.org/wiki/Dry_valley]
is_a: ENVO:00000100 ! valley

[Term]
id: ENVO:00000129
name: stream valley
def: "A valley that contains, and has been formed by, a stream." [MA:ma]
synonym: "gullie" RELATED []
synonym: "ravine" RELATED [USGS:SDTS]
synonym: "ravine" RELATED [Geonames:feature]
xref: FTT:159
xref: FTT:420
xref: Geonames:RVN
xref: TGN:21427
is_a: ENVO:00000100 ! valley

[Term]
id: ENVO:00000130
name: reef
def: "A ridge of rocks, lying near the surface of the sea, which may be visible at low tide, but is usually covered by water." [USGS:SDTS]
synonym: "atoll reef" NARROW [USGS:SDTS]
synonym: "bank reef" NARROW [USGS:SDTS]
synonym: "barrier reef" NARROW [ADL:FTT]
synonym: "barrier reef" NARROW [USGS:SDTS]
synonym: "fringing reef" NARROW [ADL:FTT]
synonym: "fringing reef" NARROW [USGS:SDTS]
synonym: "ledge" RELATED [USGS:SDTS]
synonym: "reef" RELATED [Geonames:feature]
synonym: "REEF" EXACT [USGS:SDTS]
synonym: "reef flat" RELATED [USGS:SDTS]
synonym: "reefs" RELATED [Geonames:feature]
synonym: "shore reef" NARROW [USGS:SDTS]
synonym: "submerged reef" NARROW [USGS:SDTS]
xref: FTT:202
xref: FTT:203
xref: FTT:729
xref: Geonames:RF
xref: Geonames:RFSU
xref: Geonames:RFU
xref: TGN:21479
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000131
name: glacial feature
def: "A hydrographic feature characterized by the dominance of snow or ice." [MA:ma]
synonym: "glacer" NARROW [ADL:FTT]
synonym: "glacial landform" RELATED [Getty:TGN]
synonym: "glacier feature" RELATED [ADL:FTT]
synonym: "Ice" RELATED [NASA:earthrealm]
synonym: "LandIce" RELATED [NASA:earthrealm]
xref: FTT:648
xref: TGN:21410
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000132
name: ice sheet
alt_id: ENVO:00000379
def: "A mass of glacier ice that covers surrounding terrain and is greater than 50,000 km2." [wiki:http\://en.wikipedia.org/wiki/Ice_sheet]
synonym: "Arctic pack" RELATED [USGS:SDTS]
synonym: "bay ice" RELATED [USGS:SDTS]
synonym: "continental glacier" RELATED [USGS:SDTS]
synonym: "continental ice" RELATED [USGS:SDTS]
synonym: "glacial tongue" RELATED [USGS:SDTS]
synonym: "ICE FIELD" RELATED [USGS:SDTS]
synonym: "ice field" RELATED [ADL:FTT]
synonym: "ice mass" RELATED [ADL:FTT]
synonym: "island ice" RELATED [USGS:SDTS]
synonym: "pack ice" RELATED [USGS:SDTS]
synonym: "polar ice" RELATED [USGS:SDTS]
synonym: "polar ice pack" RELATED [USGS:SDTS]
synonym: "rock glacier" RELATED [USGS:SDTS]
synonym: "shelf ice" RELATED [USGS:SDTS]
xref: FTT:758
xref: FTT:835
xref: FTT:837
xref: TGN:21147
is_a: ENVO:00000133 ! glacier

[Term]
id: ENVO:00000133
name: glacier
def: "A large, slow moving river of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity." [wiki:http\://en.wikipedia.org/wiki/Glacier]
synonym: "glacial feature" BROAD [ADL:FTT]
synonym: "Glacier" EXACT [NASA:earthrealm]
synonym: "glacier" EXACT [Geonames:feature]
synonym: "ice field" RELATED [USGS:SDTS]
synonym: "rock glacier" RELATED [USGS:SDTS]
synonym: "RockGlacier" RELATED [NASA:earthrealm]
xref: FTT:648
xref: FTT:756
xref: Geonames:GLCR
xref: TGN:21141
is_a: ENVO:00000299 ! ice mass

[Term]
id: ENVO:00000134
name: permafrost
def: "Soil at or below the freezing point of water (0C or 32F) for two or more years. Ice is not always present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential hydraulic saturation of the ground material." [wiki:http\://en.wikipedia.org/wiki/Permafrost]
synonym: "Permafrost" EXACT [NASA:earthrealm]
is_a: ENVO:00000131 ! glacial feature

[Term]
id: ENVO:00000135
name: buffer zone
def: "A geographical region that serves the purpose of keeping two or more other areas (often, but not necessarily, countries) distant from one another, for whatever reason." [wiki:http\://en.wikipedia.org/wiki/Buffer_zone]
synonym: "administrative area" RELATED [ADL:FTT]
synonym: "buffer zone" EXACT [Geonames:feature]
xref: FTT:17
xref: Geonames:ZNB
is_a: ENVO:00000004 ! administrative region

[Term]
id: ENVO:00000136
name: demilitiarized zone
def: "A geographical area, usually the frontier or boundary between two or more military powers (or alliances), where military activity is not permitted, usually by peace treaty, armistice or other bilateral or multilateral agreement." [wiki:http\://en.wikipedia.org/wiki/Demilitarized_zone]
synonym: "adminstrative area" BROAD [ADL:FTT]
synonym: "boundary" RELATED [USGS:SDTS]
synonym: "DEMILITIARIZED ZONE" EXACT [USGS:SDTS]
synonym: "DMZ" EXACT []
synonym: "neutral zone" EXACT [ADL:FTT]
synonym: "neutral zone" EXACT [USGS:SDTS]
xref: FTT:1253
xref: FTT:20
is_a: ENVO:00000135 ! buffer zone

[Term]
id: ENVO:00000137
name: coastal inlet
def: "An opening of the sea into the land." [USGS:SDTS]
synonym: "coastal inlet" RELATED []
xref: FTT:463
xref: TGN:21128
is_a: ENVO:00000475 ! inlet
relationship: part_of ENVO:00000303 ! coast

[Term]
id: ENVO:00000138
name: cove
def: "A circular or round inlet with a narrow entrance." [wiki:http\://en.wikipedia.org/wiki/Cove]
synonym: "bayou" RELATED [ADL:FTT]
synonym: "bayou" RELATED [Getty:TGN]
synonym: "cove" RELATED [Geonames:feature]
synonym: "inlet" RELATED [USGS:SDTS]
xref: FTT:190
xref: FTT:229
xref: Geonames:COVE
xref: TGN:21120
is_a: ENVO:00000137 ! coastal inlet

[Term]
id: ENVO:00000139
name: irrigation ditch
def: "A ditch that supplies water to surrounding land." [MA:ma]
synonym: "canal" BROAD [ADL:FTT]
synonym: "irrigation ditch" EXACT [ADL:FTT]
synonym: "irrigation ditch" EXACT [Geonames:feature]
xref: FTT:129
xref: FTT:406
xref: Geonames:DTCHI
is_a: ENVO:00000037 ! ditch

[Term]
id: ENVO:00000140
name: drainage ditch
def: "A ditch that collects water from the surrounding land." [MA:ma]
synonym: "canal" RELATED [ADL:FTT]
synonym: "drainage ditch" EXACT [ADL:FTT]
synonym: "drainage ditch" EXACT [Geonames:feature]
synonym: "rhyne" RELATED []
xref: FTT:129
xref: FTT:402
xref: Geonames:DTCHD
is_a: ENVO:00000037 ! ditch

[Term]
id: ENVO:00000141
name: bank
def: "The sloping margin of a watercourse, serving to confine it to its natural channel." [MA:ma]
synonym: "mount" BROAD [USGS:SDTS]
synonym: "shore" RELATED [USGS:SDTS]
xref: FTT:195
xref: TGN:21466
relationship: part_of ENVO:00000395 ! channel

[Term]
id: ENVO:00000142
name: stream bank
def: "The sloping margin of a stream, serving to confine it to its natural channel." [MA:ma]
synonym: "bank (hydrographic)" RELATED [ADL:FTT]
synonym: "stream bank" EXACT [Geonames:feature]
xref: FTT:195
xref: FTT:196
xref: Geonames:BNKR
is_a: ENVO:00000141 ! bank

[Term]
id: ENVO:00000143
name: river bank
def: "The sloping margin of a river, serving to confine it to its natural channel." [MA:ma]
synonym: "riverbank" EXACT [Getty:TGN]
xref: TGN:21155
is_a: ENVO:00000142 ! stream bank

[Term]
id: ENVO:00000144
name: aquatic habitat
subset: EnvO-Lite-GSC
is_a: ENVO:00002036 ! habitat

[Term]
id: ENVO:00000145
name: ice cap
def: "A dome-shaped ice mass that covers less than 50,000 km2 of land area (usually covering a highland area)." [wiki:http\://en.wikipedia.org/wiki/Ice_cap]
synonym: "ice field" RELATED [USGS:SDTS]
synonym: "icecap" EXACT [Geonames:feature]
synonym: "icecap" EXACT [Getty:TGN]
xref: FTT:841
xref: Geonames:CAPG
xref: TGN:21140
is_a: ENVO:00000299 ! ice mass

[Term]
id: ENVO:00000146
name: snow field
def: "A region of permanent snow in mountainous areas or high latitudes." [USGS:SDTS]
synonym: "snowfield" RELATED [Geonames:feature]
synonym: "SnowField" RELATED [NASA:earthrealm]
synonym: "SNOWFIELD" EXACT [USGS:SDTS]
synonym: "snowfield" EXACT [Getty:TGN]
xref: FTT:1208
xref: Geonames:SNOW
xref: TGN:21146
is_a: ENVO:00000131 ! glacial feature

[Term]
id: ENVO:00000147
name: ocean current
def: "The region occupied by any more or less continuous, directed movement of ocean water that flows in one of the Earth's oceans. Ocean Currents are rivers of hot or cold water within the ocean. The currents are generated from the forces acting upon the water like the earth's rotation, the wind, the temperature and salinity differences and the gravitation of the moon. The depth contours, the shoreline and other movements influence the direction and strength of the movements of water that forms a given current." [BS:bs]
comment: Definition modified from http://en.wikipedia.org/wiki/Ocean_current.
synonym: "current" BROAD [Geonames:feature]
synonym: "current" BROAD [ADL:FTT]
synonym: "current" BROAD [Getty:TGN]
synonym: "ocean current" EXACT [ADL:FTT]
xref: FTT:597
xref: FTT:598
xref: Geonames:CRNT
xref: TGN:21169
relationship: part_of ENVO:00000015 ! ocean

[Term]
id: ENVO:00000148
name: riffle
def: "A shallow stretch of a river or stream, where the current is above the average stream velocity and where the water forms small rippled waves as a result. It often consists of a rocky bed of gravels or other small stones." [wiki:http\://en.wikipedia.org/wiki/Riffle]
relationship: part_of ENVO:00000023 ! stream

[Term]
id: ENVO:00000149
name: artificial reef
def: "Chains of rocks or coral at or near the surface of water constructed by man." [MA:ma]
is_a: ENVO:00000130 ! reef

[Term]
id: ENVO:00000150
name: coral reef
def: "Aragonite structures produced by living organisms, found in shallow, marine waters with little nutrients in the water." [wiki:http\://en.wikipedia.org/wiki/Coral_reefs]
synonym: "barrier reef" RELATED []
synonym: "coral reef" EXACT [ADL:FTT]
synonym: "coral reef" EXACT [USGS:SDTS]
synonym: "coral reef" EXACT [Geonames:feature]
synonym: "CoralReef" EXACT [NASA:earthrealm]
synonym: "fringing reef" RELATED [USGS:SDTS]
synonym: "fringing reef" RELATED [ADL:FTT]
synonym: "reef" RELATED [USGS:SDTS]
xref: FTT:202
xref: FTT:547
xref: FTT:729
xref: Geonames:RFC
is_a: ENVO:00000130 ! reef
is_a: ENVO:00000466 ! marine hydrographic feature

[Term]
id: ENVO:00000151
name: sabkha
def: "An alkaline flat, in the context of a marine environment." [MA:ma]
synonym: "basin" BROAD [USGS:SDTS]
synonym: "flat" RELATED [ADL:FTT]
synonym: "sabkha" EXACT [Geonames:feature]
xref: FTT:705
xref: FTT:706
xref: Geonames:SBKH
xref: TGN:21368
is_a: ENVO:00000196 ! alkaline flat

[Term]
id: ENVO:00000152
name: anabranch
def: "A section of a river or stream that diverts from the main course and rejoins later." [wiki:http\://en.wikipedia.org/wiki/Anabranch]
synonym: "anabranch" EXACT [Geonames:feature]
synonym: "stream" RELATED [ADL:FTT]
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:104
xref: Geonames:STMA
xref: TGN:21136
is_a: ENVO:00000023 ! stream

[Term]
id: ENVO:00000153
name: headwater
def: "The upper part of a river system, denoting the upper basin and source streams of a river." [USGS:SDTS]
synonym: "drainage basin" RELATED [ADL:FTT]
synonym: "headstream" RELATED [ADL:FTT]
synonym: "HEADWATER" EXACT [USGS:SDTS]
synonym: "headwaters" EXACT [Geonames:feature]
synonym: "source" RELATED []
synonym: "stream" BROAD [ADL:FTT]
xref: FTT:105
xref: FTT:1221
xref: FTT:1259
xref: FTT:220
xref: FTT:644
xref: Geonames:STMH
xref: TGN:21181
relationship: part_of ENVO:00000023 ! stream

[Term]
id: ENVO:00000154
name: flood meadow
def: "An area of grassland or pasture beside a river, subject to seasonal flooding." [wiki:http\://en.wikipedia.org/wiki/Flood-meadow]
synonym: "water meadow" RELATED []
is_a: ENVO:00000108 ! meadow

[Term]
id: ENVO:00000155
name: cirque
def: "A deep natural hollow near the crest of a mountain, usually formed by a glacier." [USGS:SDTS, web:http\://www.antarctica.ac.uk/apc/genericterms.html]
synonym: "CIRQUE" EXACT [USGS:SDTS]
synonym: "Cirque" EXACT [NASA:earthrealm]
synonym: "cirque" EXACT [Geonames:feature]
synonym: "cirques" EXACT [Geonames:feature]
synonym: "coomb" EXACT []
synonym: "coombe" EXACT []
synonym: "corrie" EXACT []
synonym: "cwm" EXACT [ADL:FTT]
xref: FTT:218
xref: FTT:481
xref: Geonames:CRQ
xref: Geonames:CRQS
xref: TGN:21496
is_a: ENVO:00000248 ! glacial valley

[Term]
id: ENVO:00000156
name: desert oasis
def: "A small, isolated, fertile or green area in a desert region, usually having a spring or well." [USGS:SDTS]
synonym: "oasis" EXACT [Geonames:feature]
synonym: "OASIS" EXACT [USGS:SDTS]
synonym: "oasis" EXACT [Getty:TGN]
xref: FTT:261
xref: Geonames:OAS
xref: TGN:21202
relationship: part_of ENVO:00000097 ! desert

[Term]
id: ENVO:00000157
name: peat cut
def: "An artificial working of peatland to remove the peat." [MA:ma]
synonym: "peat cutting" EXACT [USGS:SDTS]
synonym: "peat cutting area" RELATED [ADL:FTT]
synonym: "peat cutting area" RELATED [Geonames:feature]
synonym: "wetland" BROAD [USGS:SDTS]
xref: FTT:1060
xref: Geonames:PEAT
relationship: part_of ENVO:00000044 ! peatland

[Term]
id: ENVO:00000158
name: causeway
def: "A road or railway elevated by a bank, usually across a broad body of water or wetland." [wiki:http\://en.wikipedia.org/wiki/Causeway]
synonym: "causeway" RELATED [Geonames:feature]
synonym: "road" RELATED [USGS:SDTS]
xref: FTT:443
xref: Geonames:CSWY
xref: TGN:53156
is_a: ENVO:00000010 ! transport feature

[Term]
id: ENVO:00000159
name: sugar plantation
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "sugar plantation" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:75
xref: Geonames:ESTSG
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000160
name: sisal plantation
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "sisal plantation" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:73
xref: Geonames:ESTSL
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000161
name: banana plantation
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "banana plantation" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:49
xref: Geonames:ESTB
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000162
name: tea plantation
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "tea estate" EXACT []
synonym: "tea plantation" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:76
xref: Geonames:ESTT
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000163
name: coffee plantation
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000164
name: rubber plantation
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "rubber plantation" EXACT [Geonames:feature]
xref: FTT:45
xref: FTT:71
xref: Geonames:ESTR
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000165
name: asphalt lake
def: "A lake formed of a natural deposit of alphalt, a black, highly viscous liquid or semi-solid composed of fossil hydrocarbons." [MA:ma]
synonym: "asphalt lake" EXACT [Geonames:feature]
synonym: "basin" BROAD [ADL:FTT]
synonym: "tar pit" EXACT []
xref: FTT:174
xref: FTT:175
xref: Geonames:ASPH
xref: TGN:21369
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000166
name: atoll
def: "An oceanic island, often having a characteristic ring-like shape surrounding a lagoon. Atolls are formed when coral reef grows around a volcanic island that later subsides into the ocean." [wiki:http\://en.wikipedia.org/wiki/Atoll]
synonym: "atoll" RELATED [USGS:SDTS]
synonym: "atoll" EXACT [Geonames:feature]
synonym: "island" BROAD [ADL:FTT]
synonym: "island" BROAD [USGS:SDTS]
synonym: "reef" RELATED [USGS:SDTS]
synonym: "REEF, ISLAND" RELATED [USGS:SDTS]
xref: FTT:127
xref: FTT:450
xref: Geonames:ATOL
xref: TGN:21472
is_a: ENVO:00000222 ! oceanic island

[Term]
id: ENVO:00000167
name: bar
def: "A linear shoaling landform feature within a body of water. Bars tend to be long and narrow (linear) and develop where a current (or waves) promote deposition of granular material, resulting in localized shallowing (shoaling) of the water. Bars can appear in the sea, in a lake, or in a river. They are typically composed of sand, although could be of any granular matter that the moving water has access to and is capable of shifting around (for example, soil, silt, gravel, cobble, shingle, or even boulders). The grain size of the material comprising a bar is related: to the size of the waves or the strength of the currents moving the material, but the availability of material to be worked by waves and currents is also important." [wiki:http\://en.wikipedia.org/wiki/Bar_%28landform%29]
synonym: "ball" RELATED [Geonames:feature]
synonym: "bank" RELATED [Geonames:feature]
synonym: "bank (hydrographic)" RELATED [USGS:SDTS]
synonym: "banks (seafloor)" RELATED [ADL:FTT]
synonym: "bar" RELATED [Geonames:feature]
synonym: "BAR" RELATED [USGS:SDTS]
synonym: "bar (physiographic)" RELATED [ADL:FTT]
synonym: "barrier beach" RELATED [USGS:SDTS]
synonym: "barrier island" RELATED [USGS:SDTS]
synonym: "bay bar" RELATED [USGS:SDTS]
synonym: "bay barrier" RELATED [USGS:SDTS]
synonym: "bay head bar" RELATED [USGS:SDTS]
synonym: "baymouth bar" RELATED [USGS:SDTS]
synonym: "cuspate bar" RELATED [USGS:SDTS]
synonym: "cuspate spit" RELATED [USGS:SDTS]
synonym: "hook" RELATED [USGS:SDTS]
synonym: "hooked spit" RELATED [USGS:SDTS]
synonym: "longshore bar" RELATED [USGS:SDTS]
synonym: "marsh bar" RELATED [USGS:SDTS]
synonym: "offshore bar" RELATED [USGS:SDTS]
synonym: "point" RELATED [USGS:SDTS]
synonym: "recurved spit" RELATED [USGS:SDTS]
synonym: "sand bank" RELATED [USGS:SDTS]
synonym: "sand bar" RELATED [Getty:TGN]
synonym: "sand hom" RELATED [USGS:SDTS]
synonym: "sand lobe" RELATED [USGS:SDTS]
synonym: "sand spit" RELATED [USGS:SDTS]
synonym: "sandbar" RELATED [ADL:FTT]
synonym: "sandbar" RELATED [USGS:SDTS]
synonym: "seafloor feature" BROAD [ADL:FTT]
synonym: "shoal" RELATED [Geonames:feature]
synonym: "shoal" RELATED [ADL:FTT]
synonym: "shoal" RELATED [Getty:TGN]
synonym: "shoal" RELATED [USGS:SDTS]
synonym: "Shoal" RELATED [NASA:earthrealm]
synonym: "shoal patches" RELATED [USGS:SDTS]
synonym: "shoals" RELATED [Geonames:feature]
synonym: "spit" RELATED [ADL:FTT]
synonym: "spit" RELATED [USGS:SDTS]
synonym: "tongue" RELATED [Geonames:feature]
synonym: "tongue" RELATED [USGS:SDTS]
synonym: "tongue (seafloor)" RELATED [ADL:FTT]
synonym: "transverse bar" RELATED [USGS:SDTS]
synonym: "undersea shoal" RELATED [Getty:TGN]
xref: FTT:1195
xref: FTT:206
xref: FTT:208
xref: FTT:209
xref: FTT:210
xref: FTT:5
xref: Geonames:BAR
xref: Geonames:BKSU
xref: Geonames:BNK
xref: Geonames:BNKU
xref: Geonames:SHLU
xref: Geonames:SHOL
xref: Geonames:SHSU
xref: Geonames:TNGU
xref: TGN:21177
xref: TGN:21480
xref: TGN:21531
xref: TGN:23191
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000168
name: blowhole
def: "A hole in coastal rock through which sea water is forced by a rising tide or waves and spurted through an outlet into the air." [Geonames:feature]
synonym: "blowhole" EXACT [Geonames:feature]
xref: FTT:266
xref: Geonames:BLHL
xref: TGN:21172
relationship: part_of ENVO:00000303 ! coast

[Term]
id: ENVO:00000169
name: canyon
def: "Relatively narrow, deep depression with steep sides, the bottom of which generally has a continuous slope." [ADL:FTT]
synonym: "barranca" RELATED [ADL:FTT]
synonym: "canyon" EXACT [Geonames:feature]
synonym: "chasm" RELATED [ADL:FTT]
synonym: "defile" RELATED [Getty:TGN]
synonym: "flume (natural)" RELATED [ADL:FTT]
synonym: "gap" RELATED [ADL:FTT]
synonym: "gorge" RELATED [ADL:FTT]
synonym: "gorge" RELATED [Getty:TGN]
synonym: "gulch" RELATED [ADL:FTT]
synonym: "quebrada" RELATED [ADL:FTT]
synonym: "ravine" RELATED [ADL:FTT]
synonym: "ravine" RELATED [Getty:TGN]
synonym: "valley" RELATED [USGS:SDTS]
xref: FTT:165
xref: FTT:200
xref: FTT:415
xref: FTT:416
xref: FTT:417
xref: FTT:418
xref: FTT:419
xref: FTT:420
xref: FTT:511
xref: Geonames:CNYN
xref: TGN:21424
xref: TGN:21426
xref: TGN:21427
xref: TGN:21429
is_a: ENVO:00000100 ! valley

[Term]
id: ENVO:00000170
name: dune
def: "A hill of sand built by eolian processes." [wiki:http\://en.wikipedia.org/wiki/Dune]
synonym: "Dune" EXACT [NASA:earthrealm]
synonym: "dune" EXACT [Geonames:feature]
synonym: "interdune trough" NARROW [ADL:FTT]
synonym: "mount" BROAD [USGS:SDTS]
synonym: "ridge" BROAD [USGS:SDTS]
synonym: "sand dune" EXACT [USGS:SDTS]
synonym: "sand hill" RELATED [USGS:SDTS]
synonym: "sandy area" BROAD [ADL:FTT]
synonym: "sandy area" BROAD [Getty:TGN]
synonym: "sandy area" BROAD [Geonames:feature]
xref: FTT:238
xref: FTT:241
xref: FTT:652
xref: Geonames:DUNE
xref: TGN:21419
xref: TGN:21505
is_a: ENVO:00000083 ! hill

[Term]
id: ENVO:00000171
name: river valley
def: "A valley that contains, and has been formed by, a river." [MA:ma]
is_a: ENVO:00000129 ! stream valley

[Term]
id: ENVO:00000172
name: sandy desert
synonym: "desert" BROAD [ADL:FTT]
synonym: "sand desert" EXACT []
synonym: "sandy area" BROAD [ADL:FTT]
synonym: "sandy area" BROAD [Getty:TGN]
synonym: "sandy area" BROAD [Geonames:feature]
synonym: "sandy desert" EXACT [Geonames:feature]
xref: FTT:188
xref: FTT:238
xref: FTT:616
xref: Geonames:ERG
xref: Geonames:SAND
xref: TGN:21203
is_a: ENVO:00000097 ! desert

[Term]
id: ENVO:00000173
name: rocky desert
synonym: "desert" BROAD [ADL:FTT]
synonym: "rock desert" EXACT [Geonames:feature]
xref: FTT:188
xref: FTT:615
xref: Geonames:HMDA
xref: TGN:21204
is_a: ENVO:00000097 ! desert

[Term]
id: ENVO:00000174
name: isthmus
def: "Narrow section of land in a body of water connecting two larger land areas." [USGS:SDTS]
synonym: "isthmus" EXACT [Geonames:feature]
synonym: "ISTHMUS" EXACT [USGS:SDTS]
synonym: "land bridge" RELATED [Getty:TGN]
synonym: "neck" RELATED [USGS:SDTS]
synonym: "submarine isthmus" RELATED [USGS:SDTS]
xref: FTT:892
xref: Geonames:ISTH
xref: TGN:21473
xref: TGN:21478
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000175
name: karst
def: "A feature shaped by the dissolution of a soluble layer or layers of bedrock, usually carbonate rock such as limestone or dolomite. These landscapes display distinctive surface features and underground drainages, and in some examples there may be little or no surface drainage." [wiki:http\://en.wikipedia.org/wiki/Karst]
synonym: "karst" EXACT [Geonames:feature]
synonym: "karst area" RELATED [ADL:FTT]
synonym: "karst area" RELATED [Getty:TGN]
xref: FTT:894
xref: Geonames:KRST
xref: TGN:21509
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000176
name: elevation
def: "A landform elevated above the surrounding area." [MA:ma]
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000177
name: moraine
def: "An accumulation of boulders, stones, or other debris carried and deposited by a glacier." [USGS:SDTS]
synonym: "glacial moraine" EXACT [USGS:SDTS]
synonym: "MORAINE" EXACT [USGS:SDTS]
synonym: "moraine" EXACT [Geonames:feature]
xref: FTT:759
xref: Geonames:MRN
xref: TGN:21414
is_a: ENVO:00000131 ! glacial feature

[Term]
id: ENVO:00000178
name: levee
def: "An artificial slope or wall, usually earthen, which parallels the course of a river, built for the purpose of containing the river." [wiki:http\://en.wikipedia.org/wiki/Levee]
synonym: "berm" RELATED [ADL:FTT]
synonym: "dike" RELATED [USGS:SDTS]
synonym: "dike" RELATED [Getty:TGN]
synonym: "dike" RELATED [Geonames:feature]
synonym: "dike (manmade)" RELATED [ADL:FTT]
synonym: "dyke" RELATED [USGS:SDTS]
synonym: "EMBANKMENT" RELATED [USGS:SDTS]
synonym: "embankment" RELATED [ADL:FTT]
synonym: "levee" RELATED [Geonames:feature]
synonym: "revetment" RELATED [ADL:FTT]
synonym: "REVETMENT" RELATED [USGS:SDTS]
xref: FTT:197
xref: FTT:21
xref: FTT:252
xref: FTT:619
xref: FTT:670
xref: FTT:921
xref: Geonames:DIKE
xref: Geonames:LEV
xref: TGN:51251
xref: TGN:51263
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000179
name: mesa
def: "An elevated area of land with a flat top and sides that are usually steep cliffs. Mesas form in areas where horizontally layered rocks are uplifted by tectonic activity." [wiki:http\://en.wikipedia.org/wiki/Mesa]
synonym: "butte" RELATED [ADL:FTT]
synonym: "mesa" EXACT [Geonames:feature]
synonym: "plateau" BROAD [USGS:SDTS]
xref: FTT:376
xref: FTT:377
xref: Geonames:MESA
xref: TGN:21422
is_a: ENVO:00000176 ! elevation

[Term]
id: ENVO:00000180
name: mound
def: "A rounded elevated area." [MA:ma]
synonym: "mound" RELATED [Geonames:feature]
synonym: "mount" RELATED [USGS:SDTS]
xref: FTT:118
xref: FTT:993
xref: Geonames:MND
xref: TGN:21458
is_a: ENVO:00000477 ! mount

[Term]
id: ENVO:00000181
name: nunatak
def: "The exposed summit of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. The term is typically used in areas where a permanent ice mass is present." [wiki:http\://en.wikipedia.org/wiki/Nunatak]
synonym: "glacier feature" BROAD [ADL:FTT]
synonym: "mountain summit" RELATED [ADL:FTT]
synonym: "nunatak" RELATED [Geonames:feature]
synonym: "nunataks" RELATED [Geonames:feature]
synonym: "peak" RELATED [USGS:SDTS]
xref: FTT:648
xref: FTT:757
xref: FTT:80
xref: Geonames:NTK
xref: Geonames:NTKS
xref: TGN:21495
is_a: ENVO:00000131 ! glacial feature
is_a: ENVO:00000176 ! elevation

[Term]
id: ENVO:00000182
name: plateau
def: "An elevated and comparatively level expanse of land." [USGS:SDTS]
synonym: "highland" RELATED [Getty:TGN]
synonym: "intermontane plateau" RELATED [USGS:SDTS]
synonym: "plateau" RELATED [Geonames:feature]
synonym: "PLATEAU" EXACT [USGS:SDTS]
synonym: "Plateau" EXACT [NASA:earthrealm]
synonym: "table mountain" RELATED [ADL:FTT]
synonym: "tableknoll" RELATED [USGS:SDTS]
synonym: "tableland" RELATED [ADL:FTT]
synonym: "tableland" RELATED [USGS:SDTS]
synonym: "tablemount" RELATED [USGS:SDTS]
synonym: "upland" RELATED [ADL:FTT]
synonym: "upland" RELATED [Getty:TGN]
synonym: "upland" RELATED [Geonames:feature]
xref: FTT:1080
xref: FTT:1090
xref: FTT:1091
xref: FTT:788
xref: Geonames:PLAT
xref: Geonames:UPLD
xref: TGN:21441
xref: TGN:21493
xref: TGN:21494
is_a: ENVO:00000191 ! physiographic feature

[Term]
id: ENVO:00000183
name: stony desert
def: "A desert plain characterized by a surface veneer of gravel or stones." [Geonames:feature]
synonym: "desert" BROAD [ADL:FTT]
synonym: "stony desert" EXACT [Geonames:feature]
xref: FTT:188
xref: FTT:617
xref: Geonames:REG
is_a: ENVO:00000097 ! desert

[Term]
id: ENVO:00000184
name: hanging valley
def: "A tributary valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume." [wiki:http\://en.wikipedia.org/wiki/Valley#Hanging_valleys]
synonym: "hanging valley" EXACT [Geonames:feature]
synonym: "valley" BROAD [ADL:FTT]
xref: FTT:166
xref: FTT:784
xref: Geonames:VALG
xref: TGN:21514
is_a: ENVO:00000248 ! glacial valley

[Term]
id: ENVO:00000185
name: raised mire
def: "Rain-fed, potentially deep peatlands occurring principally in lowland areas across much of Northern Europe, as well as in the former USSR, North America and parts of the southern hemisphere." [wiki:http\://en.wikipedia.org/wiki/Peatland#Types_of_peatland]
synonym: "raised bog" RELATED [USGS:SDTS]
synonym: "wetland" BROAD [USGS:SDTS]
is_a: ENVO:00000044 ! peatland

[Term]
id: ENVO:00000186
name: string mire
def: "Flat or concave peatlands with a string-like pattern of hummocks (hence the name), found principally in northern Scandinavia but occurring in the western parts of the former USSR and in North America. A few examples exist in northern Britain." [wiki:http\://en.wikipedia.org/wiki/Peatland#Types_of_peatland]
synonym: "string bog" EXACT [USGS:SDTS]
synonym: "wetland" BROAD [USGS:SDTS]
is_a: ENVO:00000044 ! peatland

[Term]
id: ENVO:00000187
name: tundra mire
def: "Peatlands with a shallow peat layer, only about 500 mm thick, dominated by sedges and grasses. They form in permafrost areas, covering around 110,000 to 160,000 km2 in Alaska, Canada, and the former USSR." [wiki:http\://en.wikipedia.org/wiki/Peatland#Types_of_peatland]
is_a: ENVO:00000044 ! peatland

[Term]
id: ENVO:00000188
name: paisa mire
def: "Peatland typified by characteristic high mounds, each with a permanently frozen core, with wet depressions between the mounds. These develop where the ground surface is frozen only for part of the year, and are common in the former USSR, Canada and parts of Scandinavia." [wiki:http\://en.wikipedia.org/wiki/Peatland#Types_of_peatland]
is_a: ENVO:00000044 ! peatland

[Term]
id: ENVO:00000189
name: peat swamp
def: "Forested peatlands including both rain- and groundwater-fed types, commonly recorded in tropical regions with high rainfall. This type of peatland covers around 350,000 km2, primarily in south-east Asia but also occurring in the Everglades in Florida." [wiki:http\://en.wikipedia.org/wiki/Peatland#Types_of_peatland]
is_a: ENVO:00000044 ! peatland

[Term]
id: ENVO:00000190
name: abyssal feature
def: "Feature on the ocean floor at a depth of 3500 - 6000 meters." [ADL:FTT]
synonym: "abyssal hill" RELATED [ADL:FTT]
synonym: "Abyssalhill" RELATED [NASA:earthrealm]
synonym: "ocean floor feature" RELATED []
xref: FTT:1020
xref: FTT:2
xref: FTT:4
is_a: ENVO:00000104 ! undersea feature

[Term]
id: ENVO:00000191
name: physiographic feature
synonym: "geological feature" RELATED [ADL:FTT]
synonym: "landform" RELATED []
xref: FTT:754
xref: FTT:96
xref: TGN:21400
xref: TGN:21401
is_a: ENVO:00000000 ! geographic feature

[Term]
id: ENVO:00000192
name: mudflat
def: "A wetland that forms when mud is deposited by the tides, rivers, sea or oceans." [wiki:http\://en.wikipedia.org/wiki/Mudflat]
synonym: "mud flat" RELATED [Geonames:feature]
synonym: "mud flat" EXACT [ADL:FTT]
synonym: "wetland" BROAD [ADL:FTT]
xref: FTT:1001
xref: FTT:185
xref: Geonames:FLTM
is_a: ENVO:00000043 ! wetland

[Term]
id: ENVO:00000193
name: olive grove
synonym: "olive grove" RELATED [Geonames:feature]
synonym: "wood" RELATED [ADL:FTT]
xref: FTT:1033
xref: FTT:506
xref: Geonames:GRVO
is_a: ENVO:00000117 ! plantation

[Term]
id: ENVO:00000194
name: scree
def: "Broken rock that appears at the bottom of crags, mountain cliffs or valley shoulders." [wiki:http\://en.wikipedia.org/wiki/Scree]
synonym: "physiographic feature" BROAD [ADL:FTT]
synonym: "TALUS" RELATED [USGS:SDTS]
synonym: "talus slope" RELATED [Geonames:feature]
synonym: "talus slope" RELATED [Getty:TGN]
xref: FTT:1078
xref: FTT:96
xref: Geonames:TAL
xref: TGN:21508
is_a: ENVO:00000176 ! elevation

[Term]
id: ENVO:00000195
name: sinkhole
def: "A natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by water. Sinkholes may vary in size from less than a meter to several hundred meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms." [wiki:http\://en.wikipedia.org/wiki/Sinkhole]
synonym: "basin" BROAD [USGS:SDTS]
synonym: "cenote" RELATED []
synonym: "sink" RELATED [USGS:SDTS]
synonym: "sink" RELATED [Geonames:feature]
xref: FTT:1073
xref: FTT:1074
xref: Geonames:SINK
xref: TGN:21371
is_a: ENVO:00000309 ! depression

[Term]
id: ENVO:00000196
name: alkaline flat
def: "A dry lakebead consisting of fine-grained sediments infused with alkali salts. Generally the shore or bed of an endorheic lake." [wiki:http\://en.wikipedia.org/wiki/Sabkha]
synonym: "chott" RELATED [ADL:FTT]
synonym: "kavir" RELATED [ADL:FTT]
synonym: "playa" RELATED [ADL:FTT]
synonym: "salina" RELATED [USGS:SDTS]
xref: FTT:223
xref: FTT:477
xref: FTT:706
xref: FTT:895
is_a: ENVO:00000017 ! saline hydrographic feature
is_a: ENVO:00000277 ! dry lake

[Term]
id: ENVO:00000197
name: endorheic lake
def: "A lake from which there is no outflow of water, either on the surface as rivers, or underground by flow or diffusion through rock or permeable material." [wiki:http\://en.wikipedia.org/wiki/Endorheic]
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000198
name: subglacial lake
def: "A lake permanently covered by ice." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
is_a: ENVO:00000488 ! glacial lake

[Term]
id: ENVO:00000199
name: meromictoc lake
def: "A lake which has layers of water which do not intermix. The deepest layer of water in such a lake does not contain any dissolved oxygen. The layers of sediment at the bottom of a meromictic lake remain relatively undisturbed because there are no living organisms to stir them up." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000200
name: periglacial lake
def: "A lake, part of whose margin is formed by an ice mass, ice cap or glacier, the ice having obstructed the natural drainage of the land." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
is_a: ENVO:00000488 ! glacial lake

[Term]
id: ENVO:00000201
name: fjord lake
def: "A lake in a glacially eroded valley, which has been eroded below sea level." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000202
name: oxbow lake
def: "A lake which is formed when a wide meander from a stream or a river is cut off to form a lake. They are called oxbow lakes due to the distinctive curved shape that results from this process." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
synonym: "lake" BROAD [ADL:FTT]
synonym: "lake" BROAD [USGS:SDTS]
synonym: "oxbow" EXACT [USGS:SDTS]
synonym: "oxbow lake" EXACT [Geonames:feature]
xref: FTT:221
xref: FTT:903
xref: Geonames:LKO
xref: TGN:21139
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000203
name: rift lake
def: "A lake which forms as a result of subsidence along a geological fault in the Earth's tectonic plates." [wiki:http\://en.wikipedia.org/wiki/Lake#Types_of_lakes]
is_a: ENVO:00000020 ! lake

[Term]
id: ENVO:00000204
name: ephemeral spring
def: "A spring whose flow is intermittent." [MA:ma]
is_a: ENVO:00000027 ! spring

[Term]
id: ENVO:00000205
name: permanent spring
def: "A spring whose flow is continuous." [MA:ma]
is_a: ENVO:00000027 ! spring

[Term]
id: ENVO:00000206
name: neritic zone
def: "The water mass of an ocean directly above a continental shelf." [wiki:http\://en.wikipedia.org/wiki/Ocean]
is_a: ENVO:00000207 ! oceanic zone

[Term]
id: ENVO:00000207
name: oceanic zone
def: "The water mass of an ocean that is not above a continental shelf." [wiki:http\://en.wikipedia.org/wiki/Ocean]
synonym: "OceanLayer" EXACT [NASA:earthrealm]
relationship: part_of ENVO:00000015 ! ocean

[Term]
id: ENVO:00000208
name: pelagic zone
def: "An open ocean region." [wiki:http\://en.wikipedia.org/wiki/Ocean]
is_a: ENVO:00000207 ! oceanic zone

[Term]
id: ENVO:00000209
name: photic zone
def: "The zone of an ocean from the surface to 200m where photosynthesis can occur, due to the penetration of light." [wiki:http\://en.wikipedia.org/wiki/Ocean]
synonym: "epipelagic zone" EXACT []
synonym: "PhoticZone" EXACT [NASA:earthrealm]
is_a: ENVO:00000207 ! oceanic zone

[Term]
id: ENVO:00000210
name: aphotic zone
def: "The zone of an ocean below 200m, in which photosynthesis cannot occur due to the lack of light." [wiki:http\://en.wikipedia.org/wiki/Ocean]
synonym: "AphoticZone" EXACT [NASA:earthrealm]
is_a: ENVO:00000207 ! oceanic zone

[Term]
id: ENVO:00000211
name: bathypelagic zone
def: "The one of an ocean below the 10degC thermocline down to a temperature of 4degC." [wiki:http\://en.wikipedia.org/wiki/Ocean]
is_a: ENVO:00000210 ! aphotic zone

[Term]
id: ENVO:00000212
name: abyssalpelagic zone
def: "The zone of the ocean below the bathypelagic zone, with its lowest boundary at about 6000m." [wiki:http\://en.wikipedia.org/wiki/Ocean]
is_a: ENVO:00000210 ! aphotic zone

[Term]
id: ENVO:00000213
name: mesopelagic zone
def: "The zone of an ocean immediately below the photic zone down to a depth where the water temperature is 10degC (the thermocline)." [wiki:http\://en.wikipedia.org/wiki/Ocean]
is_a: ENVO:00000210 ! aphotic zone

[Term]
id: ENVO:00000214
name: hadalpelagic zone
def: "The zone of an ocean in oceanic trenches, lying between 6000m and 10,000m." [wiki:http\://en.wikipedia.org/wiki/Ocean]
is_a: ENVO:00000210 ! aphotic zone

[Term]
id: ENVO:00000215
name: hydrothermal vent
def: "A fissure in the Earths's surface from which geothermally heated water issues." [wiki:http\://en.wikipedia.org/wiki/Hydrothermal_vents]
subset: EnvO-Lite-GSC
synonym: "HydrothermalVents" EXACT [NASA:earthrealm]
xref: FTT:834
is_a: ENVO:00000049 ! volcanic hydrographic feature
is_a: ENVO:00000094 ! volcanic feature
is_a: ENVO:00000466 ! marine hydrographic feature

[Term]
id: ENVO:00000216
name: fumarole
def: "A hole in the Earth's crust from which steam and gases are emitted." [USGS:SDTS]
synonym: "FUMAROLE" EXACT [USGS:SDTS]
synonym: "thermal feature" BROAD [ADL:FTT]
xref: FTT:731
xref: FTT:732
is_a: ENVO:00000051 ! hot spring

[Term]
id: ENVO:00000217
name: solfatara
def: "A fumarole that emits sulfurous gases." [wiki:http\://en.wikipedia.org/wiki/Fumarole]
is_a: ENVO:00000216 ! fumarole

[Term]
id: ENVO:00000218
name: black smoker
def: "A hydrothermal vent found on the ocean floor. The vents are formed in fields hundreds of meters wide when superheated water from below the Earth's crust comes through the ocean floor. The superheated water is rich in dissolved minerals from the crust, most notably sulfides, which crystallize to create a chimney-like structure around each vent. When the superheated water in the vent comes in contact with the cold ocean water, many minerals are precipitated, creating the distinctive black color. The metal sulfides that are deposited can become massive sulfide ore deposits in time." [wiki:http\://en.wikipedia.org/wiki/Black_smoker]
synonym: "active chimney" EXACT []
synonym: "sea vent" RELATED []
is_a: ENVO:00000215 ! hydrothermal vent

[Term]
id: ENVO:00000219
name: landlocked sea
def: "A sea that is not connected with an ocean." [MA:ma]
synonym: "inland sea" RELATED [USGS:SDTS]
synonym: "lake" BROAD [ADL:FTT]
synonym: "lake" BROAD [USGS:SDTS]
xref: FTT:221
xref: FTT:871
is_a: ENVO:00000016 ! sea

[Term]
id: ENVO:00000220
name: archipelago
def: "A group of geographically or geologically associated islands." [wiki:http\://en.wikipedia.org/wiki/Archipelago]
synonym: "island arc" RELATED [USGS:SDTS]
synonym: "ISLAND CLUSTER" EXACT [USGS:SDTS]
synonym: "island group" RELATED [Getty:TGN]
synonym: "IslandArc" RELATED [NASA:earthrealm]
xref: FTT:146
xref: TGN:21470
xref: TGN:21474
is_a: ENVO:00000012 ! hydrographic feature

[Term]
id: ENVO:00000221
name: continental island
def: "An island that lies on a continental shelf." [wiki:http\://en.wikipedia.org/wiki/Island#Continental_islands]
is_a: ENVO:00000098 ! island

[Term]
id: ENVO:00000222
name: oceanic island
def: "An island that does not sit on a continental shelf, and is of volcanic origin." [wiki:http\://en.wikipedia.org/wiki/Island#Oceanic_islands]
synonym: "volcanic island" RELATED []
is_a: ENVO:00000094 ! volcanic feature
is_a: ENVO:00000098 ! island

[Term]
id: ENVO:00000223
name: continental shelf
def: "The extended perimeter of each continent, which is covered during interglacial periods such as the current epoch by relatively shallow sea." [wiki:http\://en.wikipedia.org/wiki/Continental_shelf]
synonym: "borderland" RELATED [Geonames:feature]
synonym: "borderland (continental margin)" RELATED [ADL:FTT]
synonym: "continental margin" EXACT [ADL:FTT]
synonym: "ContinentalMargin" RELATED [NASA:earthrealm]
synonym: "platform (continental margin)" RELATED [ADL:FTT]
synonym: "shelf" EXACT [Geonames:feature]
synonym: "shelf edge (ocean)" RELATED [ADL:FTT]
synonym: "shelves, continental" EXACT [ADL:FTT]
xref: FTT:283
xref: FTT:284
xref: FTT:535
xref: FTT:537
xref: FTT:538
xref: FTT:539
xref: Geonames:BDLU
xref: Geonames:SHFU
is_a: ENVO:00000104 ! undersea feature

[Term]
id: ENVO:00000224
name: slightly stratified estuary
def: "An estuary whose river output is less than the marine input. Here, turbulence causes mixing of the whole water column, such that salinity varies more longitudinally rather than vertically." [wiki:http\://en.wikipedia.org/wiki/Estuary]
is_a: ENVO:00000045 ! estuary

[Term]
id: ENVO:00000225
name: highly stratified estuary
def: "An estuary whose river output and marine input are more even, with river flow still dominant; turbulence induces more mixing of salt water upward than the reverse." [wiki:http\://en.wikipedia.org/wiki/Estuary]
is_a: ENVO:00000045 ! estuary

[Term]
id: ENVO:00000226
name: saline wedge estuary
def: "An estuary whose river output greatly exceeds marine input; there is little mixing, and thus a sharp contrast between fresh surface water and saline bottom water." [wiki:http\://en.wikipedia.org/wiki/Estuary]
synonym: "salt wedge estuary" EXACT []
is_a: ENVO:00000045 ! estuary

[Term]
id: ENVO:00000227
name: vertically mixed estuary
def: "An estuary whose river output is less than the marine input. Here, turbulence causes mixing of the whole water column, such that salinity varies more longitudinally rather than vertically." [wiki:http\://en.wikipedia.org/wiki/Estuary]
is_a: ENVO:00000045 ! estuary

[Term]
id: ENVO:00000228
name: inverse estuary
def: "An estuary located in regions with high evaporation, there is no freshwater input and in fact salinity increases inland; overall flow is inward at the surface, downwells at the inland terminus, and flows outward subsurface." [wiki:http\://en.wikipedia.org/wiki/Estuary]
is_a: ENVO:00000045 ! estuary

[Term]
id: ENVO:00000229
name: intermittent estuary
def: "An estuary that varies dramatically depending on freshwater input, and is capable of changing from a wholly marine embayment to any of the other estuary types." [wiki:http\://en.wikipedia.org/wiki/Estuary]
is_a: ENVO:00000045 ! estuary
is_a: ENVO:00000549 ! intermittent water body

[Term]
id: ENVO:00000230
name: coastal wetland
def: "A wetland associated with the part of the land adjoining or near a sea or ocean." [MA:ma]
relationship: part_of ENVO:00000303 ! coast

[Term]
id: ENVO:00000231
name: moor
def: "A wetland found in upland areas, characterised by acidic soils." [wiki:http\://en.wikipedia.org/wiki/Moorland]
synonym: "grassland" BROAD [USGS:SDTS]
synonym: "moor" BROAD [Geonames:feature]
synonym: "shrubland" RELATED [ADL:FTT]
synonym: "wetland" BROAD [USGS:SDTS]
synonym: "woodland" BROAD [USGS:SDTS]
xref: FTT:1191
xref: FTT:991
xref: Geonames:MOOR
xref: TGN:21608
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000232
name: fen
def: "A freshwater peat land with chemically basic (which roughly means alkaline) ground water." [wiki:http\://en.wikipedia.org/wiki/Wetland#Wetland_types]
synonym: "wetland" BROAD [ADL:FTT]
synonym: "wetland" BROAD [USGS:SDTS]
xref: FTT:685
xref: TGN:21321
is_a: ENVO:00000044 ! peatland

[Term]
id: ENVO:00000233
name: swamp
def: "A wetland that features permanent inundation of large areas of land by shallow bodies of water, generally with a substantial number of hummocks, or dry-land protrusions." [wiki:http\://en.wikipedia.org/wiki/Swamp]
synonym: "cienaga" RELATED [ADL:FTT]
synonym: "Swamp" EXACT [NASA:earthrealm]
synonym: "swamp" EXACT [Geonames:feature]
synonym: "wetland" BROAD [USGS:SDTS]
synonym: "wetland" BROAD [ADL:FTT]
xref: FTT:1226
xref: FTT:185
xref: FTT:480
xref: Geonames:SWMP
xref: TGN:21324
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000234
name: bayou
def: "A small, slow-moving stream or creek; usually located in low-lying areas." [wiki:http\://en.wikipedia.org/wiki/Bayous]
synonym: "bahia" RELATED [ADL:FTT]
synonym: "embayment" RELATED [ADL:FTT]
synonym: "lake" RELATED [USGS:SDTS]
synonym: "lake" BROAD [USGS:SDTS]
synonym: "slough" RELATED []
synonym: "watercourse" BROAD [USGS:SDTS]
xref: FTT:1206
xref: FTT:228
xref: FTT:230
xref: TGN:21303
xref: TGN:21305
is_a: ENVO:00000023 ! stream

[Term]
id: ENVO:00000235
name: carr
def: "A fen which has developed to the point where it supports trees." [wiki:http\://en.wikipedia.org/wiki/Wetland#Wetland_types]
is_a: ENVO:00000232 ! fen

[Term]
id: ENVO:00000236
name: dambo
def: "A class of complex shallow wetlands in central, southern and eastern Africa, particularly in Zambia and Zimbabwe. They are generally found in higher rainfall flat plateau areas, and have river-like branching forms which may be nowhere very large, but common enough to add up to a large area." [wiki:http\://en.wikipedia.org/wiki/Dambos]
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000237
name: hydromorphic/phreatic dambo
def: "A danbo associated with a headwater." [wiki:http\://en.wikipedia.org/wiki/Dambos]
is_a: ENVO:00000236 ! dambo

[Term]
id: ENVO:00000238
name: fluvial dambo
def: "A dambo associated with a river." [wiki:http\://en.wikipedia.org/wiki/Dambos]
is_a: ENVO:00000236 ! dambo

[Term]
id: ENVO:00000239
name: pocasin
def: "A palustrine wetland with deep, acidic, sandy, peat soils. Groundwater saturates the soil except during brief seasonal dry spells and during prolonged droughts. Pocosin soils are nutrient deficient (oligotrophic), especially in phosphorus." [wiki:http\://en.wikipedia.org/wiki/Pocosin]
synonym: "wetland" BROAD [USGS:SDTS]
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000240
name: saline wetland
is_a: ENVO:00000043 ! wetland

[Term]
id: ENVO:00000241
name: tidal mudflat
def: "A level tract lying at a small depth below the surface of water, or alternately covered and left bare by the tide." [USGS:SDTS]
synonym: "FLAT" EXACT [USGS:SDTS]
synonym: "tidal flat" EXACT [Geonames:feature]
synonym: "tidal flat" EXACT [ADL:FTT]
synonym: "tidal flat" EXACT [USGS:SDTS]
synonym: "wetland" BROAD [ADL:FTT]
xref: FTT:1230
xref: FTT:185
xref: FTT:706
xref: Geonames:FLTT
is_a: ENVO:00000054 ! saline marsh
is_a: ENVO:00000192 ! mudflat
is_a: ENVO:00000230 ! coastal wetland

[Term]
id: ENVO:00000242
name: lacustrine mudflat
def: "A wetland that forms when mud is deposited by a stream." [MA:ma]
is_a: ENVO:00000192 ! mudflat
is_a: ENVO:00000243 ! freshwater wetland

[Term]
id: ENVO:00000243
name: freshwater wetland
def: "A wetland whose water that contains low concentrations of salts." [MA:ma]
is_a: ENVO:00000043 ! wetland

[Term]
id: ENVO:00000244
name: abyssal plain
def: "A flat or very gently sloping areas of the deep ocean basin floor." [wiki:http\://en.wikipedia.org/wiki/Abyssal_plain]
synonym: "abyssal feature" RELATED [ADL:FTT]
synonym: "Abyssalplain" EXACT [NASA:earthrealm]
xref: FTT:4
xref: TGN:23302
is_a: ENVO:00000190 ! abyssal feature

[Term]
id: ENVO:00000245
name: maar
def: "A broad, low relief crater that results from a phreatic eruption or explosion caused by groundwater contact with hot lava or magma. The maar typically fills with water to form a relatively shallow crater lake." [wiki:http\://en.wikipedia.org/wiki/Maar]
relationship: part_of ENVO:00000247 ! volcano

[Term]
id: ENVO:00000246
name: volcanic crater
def: "A crater formed by a volcano, within which occurs a vent (or vents) from which magma erupts as gases, lava, and ejecta." [wiki:http\://en.wikipedia.org/wiki/Volcanic_crater]
synonym: "crater" RELATED []
xref: FTT:219
xref: TGN:21408
is_a: ENVO:00000514 ! crater
relationship: part_of ENVO:00000247 ! volcano

[Term]
id: ENVO:00000247
name: volcano
def: "An opening, or rupture, in the Earth's surface or crust, which allows hot, molten rock, ash and gases to escape from deep below the surface." [wiki:http\://en.wikipedia.org/wiki/Volcano]
synonym: "mount" BROAD [USGS:SDTS]
synonym: "volcano" EXACT [Geonames:feature]
synonym: "Volcano" EXACT [NASA:earthrealm]
xref: FTT:592
xref: Geonames:VLC
xref: TGN:21406
is_a: ENVO:00000094 ! volcanic feature

[Term]
id: ENVO:00000248
name: glacial valley
def: "A valley that contains, or contained, a glacier and was formed by glacial activity. Typically U-shaped in cross-section." [MA:ma]
synonym: "valley" RELATED [USGS:SDTS]
is_a: ENVO:00000100 ! valley

[Term]
id: ENVO:00000249
name: lateral moraine
def: "The parallel ridges of till deposited along the sides of an alglacier. The unconsolidated debris is deposited on top of the glacier by frost shattering of the valley walls and from tributary streams flowing into the valley. The till is carried along the glacial margin until the glacier melts." [wiki:http\://en.wikipedia.org/wiki/Moraine]
synonym: "moraine" BROAD [USGS:SDTS]
is_a: ENVO:00000177 ! moraine

[Term]
id: ENVO:00000250
name: medial moraine
def: "A moriane formed when the inside lateral moraines of two glaciers merge together. They form a ridge down the center of the combined glaciers." [wiki:http\://en.wikipedia.org/wiki/Moraine]
is_a: ENVO:00000177 ! moraine

[Term]
id: ENVO:00000251
name: ground moraine
def: "A till covered area with irregular topography and no ridges, often forming gently rolling hills or plains. Forms by the accumulation of till under the ice by lodgement, but may also be deposited as the glacier retreats." [wiki:http\://en.wikipedia.org/wiki/Moraine]
is_a: ENVO:00000177 ! moraine

[Term]
id: ENVO:00000252
name: terminal moraine
def: "Ridges of unconsolidated debris deposited at the snout or end of the glacier. They usually reflect the shape of the glacier's terminus." [wiki:http\://en.wikipedia.org/wiki/Moraine]
synonym: "delta moraine" RELATED [USGS:SDTS]
synonym: "end moraine" EXACT [USGS:SDTS]
synonym: "moraine" RELATED [USGS:SDTS]
is_a: ENVO:00000177 ! moraine

[Term]
id: ENVO:00000253
name: scroll plane
def: "A plain where a stream meanders across an area with a very low gradient, usually with a fairly continuous discharge. In addition to meanders, scroll plains are also characterised by many oxbow lakes." [wiki:http\://en.wikipedia.org/wiki/Scroll_plain]
is_a: ENVO:00000086 ! plain

[Term]
id: ENVO:00000254
name: till plan
def: "An extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place depositing the sediments it carried." [wiki:http\://en.wikipedia.org/wiki/Till_plain]
is_a: ENVO:00000086 ! plain

[Term]
id: ENVO:00000255
name: flood plain
def: "An area which is subject to periodic flooding." [USGS:SDTS]
synonym: "bottomland" RELATED [ADL:FTT]
synonym: "FLOOD PLAIN" EXACT [USGS:SDTS]
synonym: "Floodplain" EXACT [NASA:earthrealm]
synonym: "floodplain" EXACT [ADL:FTT]
xref: FTT:288
xref: FTT:98
xref: TGN:21460
is_a: ENVO:00000086 ! plain

[Term]
id: ENVO:00000256
name: floodway
def: "The stream channel and adjacent areas that carry flood flows in a flood plain." [wiki:http\://en.wikipedia.org/wiki/Flood_plain]
xref: FTT:710
relationship: part_of ENVO:00000255 ! flood plain

[Term]
id: ENVO:00000257
name: flood fringe
def: "Area of a flood plane covered by the flood, but which do not experience a strong current." [wiki:http\://en.wikipedia.org/wiki/Flood_plain]
relationship: part_of ENVO:00000255 ! flood plain

[Term]
id: ENVO:00000258
name: alluvial plain
def: "Arelatively flat and gently sloping landform found at the base of a range of hills or mountains, formed by the deposition of alluvial soil over a long period of time by one or more streams coming from the mountains." [wiki:http\://en.wikipedia.org/wiki/Alluvial_plain]
is_a: ENVO:00000086 ! plain

[Term]
id: ENVO:00000259
name: lacustrine plain
def: "A plain that originally formed in a lacustrine environment, that is, as the bed of a lake, but from which the water has disappeared, by natural drainage, evaporation or other geophysical processes." [wiki:http\://en.wikipedia.org/wiki/Lacustrine_plain]
is_a: ENVO:00000086 ! plain

[Term]
id: ENVO:00000260
name: prairie
def: "An area of land of low topographic relief that historically supported grasses and herbs, with few trees, and having generally a mesic (moderate or temperate) climate. Dominated by tall grasses (contrast steppe)." [wiki:http\://en.wikipedia.org/wiki/Prairie]
synonym: "grassland" RELATED [ADL:FTT]
synonym: "grassland" RELATED [USGS:SDTS]
synonym: "llanos" RELATED [ADL:FTT]
synonym: "pampa" RELATED [Getty:TGN]
synonym: "plain" RELATED [ADL:FTT]
synonym: "veld" RELATED [USGS:SDTS]
xref: FTT:259
xref: FTT:707
xref: FTT:769
xref: FTT:926
xref: TGN:21605
xref: TGN:21606
is_a: ENVO:00000106 ! grassland

[Term]
id: ENVO:00000261
name: savanna
def: "A grassland of the tropics or subtropics with scattered trees." [wiki:http\://en.wikipedia.org/wiki/Tropical_and_subtropical_grasslands%2C_savannas%2C_and_shrublands]
synonym: "grassland" RELATED [ADL:FTT]
synonym: "grassland" RELATED [USGS:SDTS]
synonym: "Savanna" EXACT [NASA:earthrealm]
synonym: "savannah" RELATED [ADL:FTT]
xref: FTT:259
xref: FTT:770
xref: FTT:771
xref: TGN:21607
is_a: ENVO:00000106 ! grassland

[Term]
id: ENVO:00000262
name: steppe
def: "A plain without trees (apart from those near rivers and lakes); it is similar to a prairie, although a prairie is generally considered as being dominated by tall grasses, while short grasses are said to be normal in the steppe. It may be semi-desert, or covered with grass or shrubs or both, depending on the season and latitude." [wiki:http\://en.wikipedia.org/wiki/Steppe]
synonym: "grassland" RELATED [ADL:FTT]
synonym: "grassland" RELATED [USGS:SDTS]
synonym: "pampa" RELATED []
synonym: "pampas" RELATED [USGS:SDTS]
synonym: "puszta" RELATED [USGS:SDTS]
xref: FTT:259
is_a: ENVO:00000106 ! grassland

[Term]
id: ENVO:00000263
name: fissure cave
def: "A narrow, verical cave passage, often developed along a joint but not necessarily so. Usually due to solution but sometimes to tension." [web:http\://wasg.iinet.net.au/terminol.html]
is_a: ENVO:00000067 ! cave

[Term]
id: ENVO:00000264
name: seamount
def: "A mountain rising from the ocean seafloor that does not reach to the water's surface (sea level), and thus is not an island. Typically formed from volcanoes that rise abruptly and are usually found rising from a seafloor of 1,000 - 4,000 meters depth. Independent features that rise to at least 1,000 meters above the seafloor." [wiki:http\://en.wikipedia.org/wiki/Seamount]
synonym: "hill" RELATED [Geonames:feature]
synonym: "hills" RELATED [Geonames:feature]
synonym: "knoll" RELATED [Geonames:feature]
synonym: "knolls" RELATED [Geonames:feature]
synonym: "mesa" RELATED [Geonames:feature]
synonym: "mound" RELATED [Geonames:feature]
synonym: "mount" RELATED [USGS:SDTS]
synonym: "mount" BROAD [USGS:SDTS]
synonym: "mountain" EXACT [Geonames:feature]
synonym: "mountains" EXACT [Geonames:feature]
synonym: "peak" RELATED [Geonames:feature]
synonym: "peaks" RELATED [Geonames:feature]
synonym: "range" RELATED [Geonames:feature]
synonym: "sea mount" EXACT []
synonym: "sea-mount" EXACT []
synonym: "seaknoll" EXACT [USGS:SDTS]
synonym: "seakpeak" RELATED [ADL:FTT]
synonym: "seakpeak" RELATED [USGS:SDTS]
synonym: "Seamount" EXACT [NASA:earthrealm]
synonym: "seamount" EXACT [Geonames:feature]
synonym: "submarine volcano" EXACT []
synonym: "undersea hill" RELATED [Getty:TGN]
synonym: "undersea knoll" RELATED [Getty:TGN]
synonym: "undersea mound" RELATED [Getty:TGN]
xref: FTT:1241
xref: Geonames:HLLU
xref: Geonames:HLSU
xref: Geonames:KNLU
xref: Geonames:KNSU
xref: Geonames:MESU
xref: Geonames:MNDU
xref: Geonames:MTSU
xref: Geonames:MTU
xref: Geonames:PKSU
xref: Geonames:PKU
xref: Geonames:RNGU
xref: Geonames:SMSU
xref: Geonames:SMU
xref: TGN:23132
xref: TGN:23133
xref: TGN:23172
xref: TGN:23175
xref: TGN:23176
xref: TGN:23178
is_a: ENVO:00000049 ! volcanic hydrographic feature
is_a: ENVO:00000081 ! mountain

[Term]
id: ENVO:00000265
name: guyot
def: "A flat-topped seamount." [wiki:http\://en.wikipedia.org/wiki/Guyot]
synonym: "plateau" RELATED [USGS:SDTS]
synonym: "seamount" BROAD [ADL:FTT]
synonym: "tablemount" EXACT [Geonames:feature]
synonym: "tablemount (seafloor)" RELATED [ADL:FTT]
synonym: "tablemounts" EXACT [Geonames:feature]
xref: FTT:1197
xref: FTT:777
xref: FTT:778
xref: Geonames:TMSU
xref: TGN:23171
is_a: ENVO:00000264 ! seamount

[Term]
id: ENVO:00000266
name: pasture
def: "Grassland used for grazing of ungulate livestock as part of a farm or ranch." [wiki:http\://en.wikipedia.org/wiki/Pasture]
synonym: "agricultural site" BROAD [ADL:FTT]
synonym: "cropland" RELATED [USGS:SDTS]
synonym: "grassland" BROAD [USGS:SDTS]
synonym: "grazing area" RELATED [Geonames:feature]
xref: FTT:45
xref: FTT:67
xref: Geonames:GRAZ
is_a: ENVO:00000106 ! grassland

[Term]
id: ENVO:00000267
name: submarine canyon
def: "A steep-sided valley on the sea floor of the continental slope. Many submarine canyons are found as extensions to large rivers; however there are many that have no such association. Canyons cutting the continental slopes have been found at depths greater than 2 km below sea level. Many submarine canyons continue as submarine channels across continental rise areas and may extend for hundreds of kilometers." [wiki:http\://en.wikipedia.org/wiki/Submarine_canyon]
synonym: "canyon" EXACT [Geonames:feature]
synonym: "canyons" EXACT [Geonames:feature]
synonym: "SubmarineCanyon" EXACT [NASA:earthrealm]
synonym: "undersea canyon" EXACT [Getty:TGN]
synonym: "undersea ravine" RELATED [Getty:TGN]
xref: FTT:421
xref: Geonames:CNSU
xref: Geonames:CNYU
xref: TGN:23415
xref: TGN:23416
is_a: ENVO:00000104 ! undersea feature
is_a: ENVO:00000169 ! canyon

[Term]
id: ENVO:00000268
name: lake bed
def: "The ground surface that lies beneath a lake." [MA:ma]
synonym: "lake" RELATED [ADL:FTT]
synonym: "lake bottom" EXACT []
xref: FTT:221
xref: FTT:804
is_a: ENVO:00000501 ! bed
relationship: part_of ENVO:00000020 ! lake

[Term]
id: ENVO:00000269
name: land-tied island
def: "A continental island connected to its adjacent land by a natural feature, such as a causeway." [MA:ma]
synonym: "island" BROAD [ADL:FTT]
synonym: "land-tied island" RELATED [Geonames:feature]
xref: FTT:147
xref: FTT:890
xref: Geonames:ISLT
xref: TGN:21511
is_a: ENVO:00000221 ! continental island

[Term]
id: ENVO:00000270
name: beaver pond
def: "A pond that has formed as a consequence of the activities of beavers, building a beaver dam." [MA:ma]
synonym: "lake" RELATED [ADL:FTT]
xref: FTT:245
is_a: ENVO:00000033 ! pond

[Term]
id: ENVO:00000271
name: chott
def: "A dry (salt) lake in the Saharan area of Africa that stays dry in the summer, but receive some water in the winter. This water may come as a groundwater discharge." [wiki:http\://en.wikipedia.org/wiki/Chott]
synonym: "shott" EXACT []
xref: FTT:477
is_a: ENVO:00000196 ! alkaline flat

[Term]
id: ENVO:00000272
name: confluence
def: "The point where a tributary joins a more major river." [wiki:http\://en.wikipedia.org/wiki/Confluence]
synonym: "confluence" EXACT [Geonames:feature]
synonym: "confluence" EXACT [ADL:FTT]
synonym: "stream" BROAD [Geonames:feature]
synonym: "stream junction" RELATED [Getty:TGN]
xref: FTT:105
xref: FTT:531
xref: Geonames:CNFL
xref: TGN:21160
xref: TGN:21381
relationship: part_of ENVO:00000023 ! stream

[Term]
id: ENVO:00000273
name: continental slope
def: "The seabed below the end of the continental shelf (the shelf break). The continental slope is much steeper than the shelf; the average angle is 3, but it can be as low as 1 or as high as 10. The slope is often cut with submar