HYDROGRAPHY POLYGONS --
Canals, Lakes, Streams, and Swamps, 2000 (1:100,000)
Shows lakes, ponds, rivers, large streams, and swamps or marshes in Indiana. This layer is derived from the National Hydrography Dataset (NHD). The NHD interconnects and uniquely identifies the stream segments or reaches that comprise the nation's surface-water drainage system. It is based initially on the content of the U.S. Geological Survey 1:100,000-scale Digital Line Graph (DLG) hydrography data, integrated with reach-related information from the U.S. Environmental Protection Agency Reach File Version 3.0 (RF3).
FGDC metadata: HYDROGRAPHY_POLY_NHD_IN