The National Hydrography Dataset (NHD), Medium Resolution Flowlines, DRECP

Jun 11, 2013 (Last modified Jun 12, 2013)
Description:
NHD medium resolution (1:100,000) flowlines downloaded from http://nhd.usgs.gov/data.html on 5/29/2013. Data were downloaded by subregion, merged, and then clipped to the DRECP study area by the Conservation Biology Institute.

The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Data Provided By:
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). Conservation Biology Institute
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not specified
Contact Organization:
Earth Science Information Center, U.S. Geological Survey
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None. Acknowledgment of the originating agencies would<br />be appreciated in products derived from these data.
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About the Uploader

Conservation Biology Institute

The Conservation Biology Institute (CBI) provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.