|Gw Ref Cd
||Gw Ref Nm
||Gw Ref Ds
||Stream deposit of loose rock material where it issues from a narrow mountain valley upon a plain.
||Undrained desert basin in which water accumulates and is quickly evaporated.
||Bed in which a natural stream of water runs.
||An area that has no external surface drainage.
||Mounds and ridges of windblown, or eolian sand.
||May be part of a larger feature, such as a plateau, plain, or pediment.
||Smooth land surface adjacent to a river channel that is flooded when the river overflows its banks.
||Upper part of a hill or ridge above a well-defined break in slope.
||Depression that results from the dissolving of soluble rocks and collapse into the solution cavity.
||Lake or Swamp
||Inland lake, swamp, or marsh where the ground may be saturated or water stands above the land surface.
||Tropical or subtropical marine swamp characterized by abundant mangrove trees.
||Site along a coast or estuary that is continuously submerged.
||Plain of combined erosion and deposition that forms at the foot of a mountain range.
||Sloping side of hill, the area between the hilltop and valley flat.
||Generally a flat surface, usually parallel to but elevated above a stream valley or coast line.
||Topography is characteristic of areas which have many small depressions and low mounds.
||Low flat area between the valley walls and bordering a stream channel.
||Small natural drainageway