National Hydrography Dataset
Digital database of water features of the United States / From Wikipedia, the free encyclopedia
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The National Hydrography Dataset (NHD) is a digital database of surface water features used to make maps. It contains features such as lakes, ponds, streams, rivers, canals, dams and stream gages for the United States.
This article includes a list of general references, but it lacks sufficient corresponding inline citations. (December 2021) |