Filters: Tags: groundwater (X) > Types: OGC WMS Layer (X) > Categories: Data (X) > Categories: Data Release - Under Revision (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Downloadable (1) Map Service (1) OGC WFS Layer (1) Shapefile (1) Contacts Tyler D Johnson John T Wilson U.S. Geological Survey Leon J Kauffman Elise Watson Kenneth Belitz U.S. Geological Survey - ScienceBase Tag Types Theme (1) Place (1) Tag Schemes USGS Thesaurus (1) Common geographic areas (1) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Community public supply based Hydrogeologic Mapping Units A seamless map of the major groundwater areas used by community public supply wells in the United States was needed in order to describe and compute the number of equivalent people using public supply water. This goal was met by the delineation of hydrogeologic mapping units (HMUs). An HMU is a mapped polygon, within which, all public supply wells have a common source of water. The source of water can be either a national Principal Aquifer (PA) as defined in USGS (2003) or a Secondary Hydrogeologic Region (SHR) as defined in Belitz et al. (2018). Collectively, both PAs and SHRs are referred to as Hydrogeologic Regions (HRs). The common source of water can be a single HR or multiple HRs, as HRs can overlap one another.... Categories: Data, Data Release - Under Revision; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: United States, geoscientificInformation, groundwater, hydrogeology