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2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m... Reston (va.). U.s. Geological Survey.
2004. Department of Public Works. Water bodies in San Francisco. Derived from city features drawings from DPW. Modified by DTIS to show type of water body and name. San Francisco (Calif.). Department Of Telecommunications and Information Services.