WETLAND POLYGONS --
National Wetland Inventory, as Polygons, 1992 (1:3,000,000)
Shows features of wetlands, lakes, ponds, streams and other water resources, as defined by the U.S. Fish & Wildlife Service and compiled from the National Wetland Inventory.
Aerial photointerpretation techniques were used, with the objective of providing better geospatial information on wetlands than found on the U.S. Geological Survey topographic maps. Wetland boundaries are generalized and are not exact, nor are they comparable to boundaries derived from ground surveys.
This layer is intended for use with its companion layers of Wetland lines and Wetland points.
FGDC metadata: WETLAND_NWI_POLY_IN