| Features Name |
Features Code |
Number of Entries |
Description |
| Stream |
STM |
508700 |
A body of running water moving to a lower level in a channel on land |
| Intermittent stream |
STMI |
105970 |
|
| Lake |
LK |
87807 |
A large inland body of standing water |
| Wadi |
WAD |
69563 |
A valley or ravine, bounded by relatively steep banks, which in the rainy
season becomes a watercourse; found primarily in North Africa and the Middle
East |
| Well |
WLL |
53175 |
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 |
| Bay |
BAY |
33989 |
A coastal indentation between two capes or headlands, larger than a cove
but smaller than a gulf |
| Spring(s) |
SPNG |
28251 |
A place where ground water flows naturally out of the ground |
| Reservoir(s) |
RSV |
11953 |
An artificial pond or lake |
| Cove(s) |
COVE |
11884 |
A small coastal indentation, smaller than a bay |
| Reef(s) |
RF |
11416 |
A surface-navigation hazard composed of consolidated material |
| Shoal(s) |
SHOL |
9926 |
A surface-navigation hazard composed of unconsolidated material |
| Marine channel |
CHNM |
7955 |
That part of a body of water deep enough for navigation through an area
otherwise not suitable |
| Waterhole(s) |
WTRH |
7788 |
A natural hole, hollow, or small depression that contains water, used
by man and animals, especially in arid areas |
| Canal |
CNL |
7375 |
An artificial watercourse |
| Pond |
PND |
6006 |
A small standing waterbody |
| Marsh(es) |
MRSH |
5965 |
A wetland dominated by grass-like vegetation |
| Ravine(s) |
RVN |
5389 |
A small, narrow, deep, steep-sided stream channel, smaller than a gorge |
| Water tank |
RSVT |
5261 |
A contained pool or tank of water at, below, or above ground level |
| Waterfall(s) |
FLLS |
4395 |
A perpendicular or very steep descent of the water of a stream |
| Fjord |
FJD |
4282 |
A long, narrow, steep-walled, deep-water arm of the sea at high latitudes,
usually along mountainous coasts |
| Harbor(s) |
HBR |
4263 |
A haven or space of deep water so sheltered by the adjacent land as to
afford a safe anchorage for ships |
| Inlet |
INLT |
4174 |
A narrow waterway extending into the land, or connecting a bay or lagoon
with a larger body of water |
| Irrigation canal |
CNLI |
4074 |
A canal which serves as a main conduit for irrigation water |
| Wells |
WLLS |
3747 |
Cylindrical holes, pits, or tunnels drilled or dug down to a depth from
which water, oil, or gas can be pumped or brought to the surface |
| Rapids |
RPDS |
3671 |
A turbulent section of a stream associated with a steep, irregular stream
bed |
| Glacier(s) |
GLCR |
3639 |
A mass of ice, usually at high latitudes or high elevations, with sufficient
thickness to flow away from the source area in lobes, tongues, or masses |
| Tidal creek(s) |
CRKT |
3556 |
A meandering channel in a coastal wetland subject to bi-directional tidal
currents |
| Channel |
CHN |
3470 |
The deepest part of a stream, bay, lagoon, or strait, through which the
main current flows |
| Lagoon |
LGN |
3310 |
A shallow coastal waterbody, completely or partly separated from a larger
body of water by a barrier island, coral reef or other depositional feature |
| Strait |
STRT |
3291 |
A relatively narrow waterway, usually narrower and less extensive than
a sound, connecting two larger bodies of water |
| Swamp |
SWMP |
3142 |
A wetland dominated by tree vegetation |
| Pool(s) |
POOL |
2976 |
A small and comparatively still, deep part of a larger body of water such
as a stream or harbor; or a small body of standing water |
| Sabkha(s) |
SBKH |
2620 |
A salt flat or salt encrusted plain subject to periodic inundation from
flooding or high tides |
| Ditch |
DTCH |
2520 |
A small artificial watercourse dug for draining or irrigating the land |
| Underground irrigation canal(s) |
CNLSB |
2464 |
A gently inclined underground tunnel bringing water for irrigation from
aquifers |
| Bank(s) |
BNK |
2352 |
An elevation, typically located on a shelf, over which the depth of water
is relatively shallow but sufficient for most surface navigation |
| Distributary(-ies) |
STMD |
2280 |
A branch which flows away from the main stream, as in a delta or irrigation
canal |
| Lakes |
LKS |
2262 |
Large inland bodies of standing water |
| Intermittent lake |
LKI |
2184 |
|
| Wetland |
WTLD |
1865 |
An area subject to inundation, usually characterized by bog, marsh, or
swamp vegetation |
| Salt lake |
LKN |
1789 |
An inland body of salt water with no outlet |
| Stream mouth(s) |
STMM |
1703 |
A place where a stream discharges into a lagoon, lake, or the sea |
| Seamount |
SMU |
1660 |
An elevation rising generally more than 1,000 meters and of limited extent
across the summit |
| Intermittent pond |
PNDI |
1600 |
|
| Navigation canal(s) |
CNLN |
1579 |
A watercourse constructed for navigation of vessels |
| Anchorage |
ANCH |
1544 |
An area where vessels may anchor |
| Bog(s) |
BOG |
1423 |
A wetland characterized by peat forming sphagnum moss, sedge, and other
acid-water plants |
| Sound |
SD |
1392 |
A long arm of the sea forming a channel between the mainland and an island
or islands; or connecting two larger bodies of water |
| Gulf |
GULF |
1272 |
A large recess in the coastline, larger than a bay |
| Anabranch |
STMA |
1160 |
A diverging branch flowing out of a main stream and rejoining it downstream |
| Section of stream |
STMX |
1134 |
|
| Basin |
BSNU |
971 |
A depression more or less equidimensional in plan and of variable extent |
| Drainage canal |
CNLD |
909 |
An artificial waterway carrying water away from a wetland or from drainage
ditches |
| Canyon |
CNYU |
873 |
A relatively narrow, deep depression with steep sides, the bottom of which
generally has a continuous slope |
| Canalized stream |
STMC |
860 |
A stream that has been substantially ditched, diked, or straightened |
| Sea |
SEA |
804 |
A large body of salt water more or less confined by continuous land or
chains of islands forming a subdivision of an ocean |
| Bight(s) |
BGHT |
803 |
An open body of water forming a slight recession in a coastline |
| Stream bend |
STMB |
798 |
A conspicuously curved or bent segment of a stream |
| Bank |
BNKU |
721 |
An elevation, typically located on a shelf, over which the depth of water
is relatively shallow but sufficient for safe surface navigation |
| Roadstead |
RDST |
704 |
An open anchorage affording less protection than a harbor |
| Reef |
RFU |
703 |
A surface-navigation hazard composed of consolidated material |
| Intermittent wetland |
WTLDI |
686 |
|
| Ridge |
RDGU |
680 |
A long narrow elevation with steep sides |
| Moor(s) |
MOOR |
603 |
An area of open ground overlaid with wet peaty soils |
| Lake bed(s) |
LBED |
601 |
A dried up or drained area of a former lake |
| Tidal flat(s) |
FLTT |
563 |
A large flat area of mud or sand attached to the shore and alternately
covered and uncovered by the tide |
| Mud flat(s) |
FLTM |
557 |
A relatively level area of mud either between high and low tide lines,
or subject to flooding |
| Section of intermittent stream |
STMIX |
556 |
|
| Section of lake |
LKX |
472 |
|
| Oxbow lake |
LKO |
448 |
A crescent-shaped lake commonly found adjacent to meandering streams |
| Docking basin |
DCKB |
415 |
A part of a harbor where ships dock |
| Trough |
TRGU |
363 |
A long depression of the sea floor characteristically flat bottomed and
steep sided, and normally shallower than a trench |
| Valley |
VALU |
353 |
A relatively shallow, wide depression, the bottom of which usually has
a continuous gradient |
| Tablemount (or guyot) |
TMTU |
295 |
A seamount having a comparatively smooth, flat top |
| Ponds |
PNDS |
278 |
Small standing waterbodies |
| Seamounts |
SMSU |
258 |
Elevations rising generally more than 1,000 meters and of limited extent
across the summit |
| Headwaters |
STMH |
238 |
The source and upper part of a stream, including the upper drainage basin |
| Reach |
RCH |
236 |
A straight section of a navigable stream or channel between two bends |
| Knoll |
KNLU |
228 |
An elevation rising generally more than 500 meters and less than 1,000
meters and of limited extent across the summit |
| Lake channel(s) |
CHNL |
222 |
That part of a lake having water deep enough for navigation between islands,
shoals, etc. |
| Trench |
TRNU |
220 |
A long, narrow, characteristically very deep and asymmetrical depression
of the sea floor, with relatively steep sides |
| Rise |
RISU |
219 |
A broad elevation that rises gently, and generally smoothly, from the
sea floor |
| Wadies |
WADS |
191 |
Valleys or ravines, bounded by relatively steep banks, which in the rainy
season become watercourses; found primarily in North Africa and the Middle
East |
| Plain |
PLNU |
188 |
A flat, gently sloping or nearly level region |
| Fracture zone |
FRZU |
187 |
An extensive linear zone of irregular topography of the sea floor, characterized
by steep-sided or asymmetrical ridges, troughs, or escarpments |
| Plateau |
PLTU |
175 |
A comparatively flat-topped feature of considerable extent, dropping off
abruptly on one or more sides |
| Navigation channel |
CHNN |
161 |
A buoyed channel of sufficient depth for the safe navigation of vessels |
| Narrows |
NRWS |
159 |
A navigable narrow part of a bay, strait, river, etc. |
| Abandoned well |
WLLQ |
159 |
|
| Crater lake |
LKC |
155 |
A lake in a crater or caldera |
| Salt marsh |
MRSHN |
155 |
A flat area, subject to periodic salt water inundation, dominated by grassy
salt-tolerant plants |
| Section of wadi |
WADX |
155 |
|
| Lost river |
STMSB |
151 |
A surface stream that disappears into an underground channel, or dries
up in an arid area |
| Aqueduct |
CNLA |
140 |
A conduit used to carry water |
| Fishing area |
FISH |
133 |
A fishing ground, bank or area where fishermen go to catch fish |
| Shoal |
SHLU |
132 |
A surface-navigation hazard composed of unconsolidated material |
| Spur |
SPRU |
127 |
A subordinate elevation, ridge, or rise projecting outward from a larger
feature |
| Abandoned canal |
CNLQ |
122 |
|
| Reefs |
RFSU |
119 |
Surface-navigation hazards composed of consolidated material |
| Escarpment (or scarp) |
ESCU |
117 |
An elongated and comparatively steep slope separating flat or gently sloping
areas |
| Icecap |
CAPG |
115 |
A dome-shaped mass of glacial ice covering an area of mountain summits
or other high lands; smaller than an ice sheet |
| Wadi mouth |
WADM |
103 |
The lower terminus of a wadi where it widens into an adjoining floodplain,
depression, or waterbody |
| Abandoned watercourse |
STMQ |
100 |
A former stream or distributary no longer carrying flowing water, but
still evident due to lakes, wetland, topographic or vegetation patterns |
| Seachannel |
SCNU |
98 |
A continuously sloping, elongated depression commonly found in fans or
plains and customarily bordered by levees on one or two sides |
| Fishponds |
PNDSF |
93 |
Ponds or enclosures in which fish are kept or raised |
| Wadi junction |
WADJ |
81 |
A place where two or more wadies join |
| Intermittent salt lake |
LKNI |
70 |
|
| Terrace |
TERU |
65 |
A relatively flat horizontal or gently inclined surface, sometimes long
and narrow, which is bounded by a steeper ascending slope on one side and
by a steep descending slope on the opposite side |
| Irrigation ditch |
DTCHI |
64 |
A ditch which serves to distribute irrigation water |
| Current |
CRNT |
63 |
A horizontal flow of water in a given direction with uniform velocity |
| Dock(s) |
DCK |
62 |
A waterway between two piers, or cut into the land for the berthing of
ships |
| Estuary |
ESTY |
61 |
A funnel-shaped stream mouth or embayment where fresh water mixes with
sea water under tidal influences |
| Gap |
GAPU |
61 |
A narrow break in a ridge or rise |
| Ocean |
OCN |
61 |
One of the major divisions of the vast expanse of salt water covering
part of the earth |
| Intermittent ponds |
PNDSI |
58 |
|
| Fan |
FANU |
57 |
A relatively smooth feature normally sloping away from the lower termination
of a canyon or canyon system |
| Hill |
HLLU |
54 |
An elevation rising generally less than 500 meters |
| Section of canal |
CNLX |
51 |
|
| Intermittent lakes |
LKSI |
49 |
|
| Confluence |
CNFL |
48 |
A place where two or more streams or intermittent streams flow together |
| Salt pond |
PNDN |
44 |
A small standing body of salt water often in a marsh or swamp, usually
along a seacoast |
| Banks |
BKSU |
43 |
Elevations, typically located on a shelf, over which the depth of water
is relatively shallow but sufficient for safe surface navigation |
| Intermittent pool |
POOLI |
43 |
|
| Hot spring(s) |
SPNT |
40 |
A place where hot ground water flows naturally out of the ground |
| Slope |
SLPU |
37 |
The slope seaward from the shelf edge to the beginning of a continental
rise or the point where there is a general reduction in slope |
| Irrigation system |
SYSI |
36 |
A network of ditches and one or more of the following elements: water
supply, reservoir, canal, pump, well, drain, etc. |
| Hole |
HOLU |
35 |
A small depression of the sea floor |
| Salt evaporation ponds |
MFGN |
35 |
Diked salt ponds used in the production of solar evaporated salt |
| Cordillera |
CDAU |
34 |
An entire mountain system including the subordinate ranges, interior plateaus,
and basins |
| Mound |
MNDU |
33 |
A low, isolated, rounded hill |
| Mangrove swamp |
MGV |
32 |
A tropical tidal mud flat characterized by mangrove vegetation |
| Section of reef |
RFX |
31 |
|
| Streams |
STMS |
30 |
Bodies of running water moving to a lower level in a channel on land |
| Section of harbor |
HBRX |
29 |
|
| Intermittent oxbow lake |
LKOI |
28 |
|
| Saddle |
SDLU |
28 |
A low part, resembling in shape a saddle, in a ridge or between contiguous
seamounts |
| Fjords |
FJDS |
27 |
Long, narrow, steep-walled, deep-water arms of the sea at high latitudes,
usually along mountainous coasts |
| Shelf |
SHFU |
27 |
A zone adjacent to a continent (or around an island) that extends from
the low water line to a depth at which there is usually a marked increase
of slope towards oceanic depths |
| Seaplane landing area |
AIRS |
26 |
A place on a waterbody where floatplanes land and take off |
| Salt lakes |
LKSN |
25 |
Inland bodies of salt water with no outlet |
| Coral reef(s) |
RFC |
24 |
A surface-navigation hazard composed of coral |
| Stream bank |
BNKR |
21 |
A sloping margin of a stream channel which normally confines the stream
to its channel on land |
| Lagoons |
LGNS |
17 |
Shallow coastal waterbodies, completely or partly separated from a larger
body of water by a barrier island, coral reef or other depositional feature |
| Intermittent reservoir |
RSVI |
17 |
|
| Section of bank |
BNKX |
16 |
|
| Drainage ditch |
DTCHD |
16 |
A ditch which serves to drain the land |
| Ledge |
LDGU |
16 |
A rocky projection or outcrop, commonly linear and near shore |
| Cutoff |
CUTF |
15 |
A channel formed as a result of a stream cutting through a meander neck |
| Deep |
DEPU |
15 |
A localized deep area within the confines of a larger feature, such as
a trough, basin or trench |
| Icecap dome |
DOMG |
13 |
A comparatively elevated area on an icecap |
| Hills |
HLSU |
13 |
Elevations rising generally less than 500 meters |
| Knolls |
KNSU |
13 |
Elevations rising generally more than 500 meters and less than 1,000 meters
and of limited extent across the summits |
| Whirlpool |
WHRL |
13 |
A turbulent, rotating movement of water in a stream |
| Watercourse |
WTRC |
13 |
A natural, well-defined channel produced by flowing water, or an artificial
channel designed to carry flowing water |
| Section of lagoon |
LGNX |
12 |
|
| Overfalls |
OVF |
12 |
An area of breaking waves caused by the meeting of currents or by waves
moving against the current |
| Shoals |
SHSU |
12 |
Hazards to surface navigation composed of unconsolidated material |
| Canyons |
CNSU |
11 |
Relatively narrow, deep depressions with steep sides, the bottom of which
generally has a continuous slope |
| Seachannels |
SCSU |
10 |
Continuously sloping, elongated depressions commonly found in fans or
plains and customarily bordered by levees on one or two sides |
| Shelf valley |
SHVU |
10 |
A valley on the shelf, generally the shoreward extension of a canyon |
| Sill |
SILU |
10 |
The low part of a gap or saddle separating basins |
| Bays |
BAYS |
8 |
Coastal indentations between two capes or headlands, larger than a cove
but smaller than a gulf |
| Tablemounts (or guyots) |
TMSU |
8 |
Seamounts having a comparatively smooth, flat top |
| Geyser |
GYSR |
7 |
A type of hot spring with intermittent eruptions of jets of hot water
and steam |
| Wadi bend |
WADB |
7 |
A conspicuously curved or bent segment of a wadi |
| Furrow |
FURU |
6 |
A closed, linear, narrow, shallow depression |
| Salt ponds |
PNDSN |
6 |
Small standing bodies of salt water often in a marsh or swamp, usually
along a seacoast |
| Ridges |
RDSU |
6 |
Long narrow elevations with steep sides |
| Section of waterfall(s) |
FLLSX |
5 |
|
| Tongue |
TNGU |
5 |
An elongate (tongue-like) extension of a flat sea floor into an adjacent
higher feature |
| Apron |
APNU |
4 |
A gentle slope, with a generally smooth surface, particularly found around
groups of islands and seamounts |
| Ditch mouth(s) |
DTCHM |
4 |
An area where a drainage ditch enters a lagoon, lake or bay |
| Sulphur spring(s) |
SPNS |
4 |
A place where sulphur ground water flows naturally out of the ground |
| Borderland |
BDLU |
3 |
A region adjacent to a continent, normally occupied by or bordering a
shelf, that is highly irregular with depths well in excess of those typical
of a shelf |
| Icecap depression |
DPRG |
3 |
A comparatively depressed area on an icecap |
| Shelf edge |
EDGU |
3 |
A line along which there is a marked increase of slope at the outer margin
of a continental shelf or island shelf |
| Former inlet |
INLTQ |
3 |
An inlet which has been filled in, or blocked by deposits |
| Province |
PRVU |
3 |
A region identifiable by a group of similar physiographic features whose
characteristics are markedly in contrast with surrounding areas |
| Canal bend |
CNLB |
2 |
A conspicuously curved or bent section of a canal |
| Crater lakes |
LKSC |
2 |
Lakes in a crater or caldera |
| Moat |
MOTU |
2 |
An annular depression that may not be continuous, located at the base
of many seamounts, islands, and other isolated elevations |
| Peak |
PKU |
2 |
A prominent elevation, part of a larger feature, either pointed or of
very limited extent across the summit |
| Intermittent salt pond(s) |
PNDNI |
2 |
|
| Arch |
ARCU |
1 |
A low bulge around the southeastern end of the island of Hawaii |
| Arrugado |
ARRU |
1 |
An area of subdued corrugations off Baja California |
| Drainage basin |
BSND |
1 |
An area drained by a stream |
| Canyon |
CNYN |
1 |
A deep, narrow valley with steep sides cutting into a plateau or mountainous
area |
| Flat |
FLTU |
1 |
A small level or nearly level area |
| Underground lake |
LKSB |
1 |
A standing body of water in a cave |
| Mesa |
MESU |
1 |
An isolated, extensive, flat-topped elevation on the shelf, with relatively
steep sides |
| Pinnacle |
PNLU |
1 |
A high tower or spire-shaped pillar of rock or coral, alone or cresting
a summit |
| Ridge(s) |
RDGE |
1 |
A long narrow elevation with steep sides, and a more or less continuous
crest |
| Icecap ridge |
RDGG |
1 |
A linear elevation on an icecap |
| Rock |
RK |
1 |
A conspicuous, isolated rocky mass |
| Sill |
SILL |
1 |
The low part of an underwater gap or saddle separating basins, including
a similar feature at the mouth of a fjord |
| Canal tunnel |
TNLC |
1 |
A tunnel through which a canal passes |
| Valleys |
VLSU |
1 |
A relatively shallow, wide depression, the bottom of which usually has
a continuous gradient |