National Inventory of Dams
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National Inventory of Dams This feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Army Corps of Engineers (USACE), displays dams within the United States, Puerto Rico and Guam. Per the USACE, "The National Inventory of Dams (NID) consists of dams meeting at least one of the following criteria: High hazard potential classification - loss of human life is likely if the dam fails. Significant hazard potential classification - no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Equal or exceed 25 feet in height and exceed 15 acre-feet in storage. Equal or exceed 50 acre-feet storage and exceed 6 feet in height". The goal of the NID is to include all dams in the United States that meet these criteria. In most cases, dams within the NID criteria are regulated (construction permit, inspection, and/or enforcement) by federal or state agencies, who have basic information on the dams within their jurisdiction." Hoover, Davis & Glen Canyon Dams Data currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (NID2019 U) and will support mapping, analysis, data exports and OGC API – Feature access. Data.gov: Not Available Geoplatform: Not Available OGC API Features Link: (National Inventory of Dams - OGC Features) copy this link to embed it in OGC Compliant viewers For more information, please visit: National Inventory of Dams For feedback please contact: Esri_US_Federal_Data@esri.com Thumbnail image courtesy of Alexander Stephens (Bureau of Reclamation) NGDA Data Set This data set is part of the NGDA Water - Inland Theme Community. Per the Federal Geospatial Data Committee (FGDC), Water - Inland is defined as the "interior hydrologic features and characteristics, including classification, measurements, location, and extent. Includes aquifers, watersheds, wetlands, navigation, water quality, water quantity, and groundwater information." For other NGDA Content: Esri Federal Datasets
