Description: U.S. Army Corps of Engineers National Inventory of Dams (NID). A dam is included in the National Inventory of Dams if: (1) it is a High or Significant hazard potential class dam or, (2) it is a Low Hazard potential class dam that exceeds 25 feet in height AND 15 acre-feet storage or, 3) it is a Low Hazard potential class dam that exceeds 50 acre-feet storage AND 6 feet height. For definitions of hazard, height and storage, please see the data dictionary. In 1986 Congress enacted the Water Resources Development Act (P.L 99-662). This legislation authorized the U.S. Army Corps of Engineers (USACE) to maintain and periodically update the National Inventory of Dams, and appropriated funds for that purpose. This GIS coverage was created by extracting dams from the 75,187 dams cataloged in the U.S. Army Corps of Engineers National Inventory of Dams. NID coverage currentness is October 2000.The coordinate system is UTM Zone 17 (NAD 83). It was downloaded from the West Virginia GIS Technical Center Data Clearing House in July 2011 by the WVDOH GTI Section.
Service Item Id: ed1a06d0d6724ed1b07a9f7c80d61403
Copyright Text: U.S. Army Corps of Engineers, West Virginia GIS Technical Center
Description: Dams regulated by the Dam Safety Section of the WV Division of Water Resources. Dam locations collected from USGS topographic maps. In summer 2002 the WVGISTC created a GIS file for 468 non-coal dams from the Dam Safety Section's database.The coordinate system is UTM Zone 17 (NAD 83). It was downloaded from the West Virginia GIS Technical Center Data Clearing House in July 2011 by the WVDOH GTI Section.
Service Item Id: ed1a06d0d6724ed1b07a9f7c80d61403
Copyright Text: WV Department of Environmental Protection, West Virginia GIS Technical Center
Description: 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.The coordinate system is UTM Zone 17 (NAD 83). It was downloaded from the West Virginia GIS Technical Center Data Clearing House in July 2011 by the WVDOH GTI Section.
Service Item Id: ed1a06d0d6724ed1b07a9f7c80d61403
Copyright Text: USEPA, West Virginia GIS Technical Center