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Filters Date Range Past year (2) Past month (2) Past week (0) Past day (0) Custom range... To   Search Extensions Project (2) Shapefile (2) Types Downloadable (2) OGC WFS Layer (2) OGC WMS Layer (2) Shapefile (2) Contacts New York Water Science Center U.S. Environmental Protection Agency John P Masterson Categories Project (2) Tag Types Label (6) Tags (with Scheme=(none)) aquifers (1) gis, water table,land surface altitude, aquifer ,well logs,maps (1) groundwater (1) hydrology (1) sediment (1) water supply (1) View Results as: JSON ATOM CSV

Nassau Hydrogeologic Maps Problem - The major hydrogeologic units of Long Island, New York, have been delineated as part of the islandwide mapping effort of Smolensky, Buxton, and Shernoff that was published in 1989 as U.S. Geological Survey (USGS) Hydrologic Atlas (HA) 709. Concern about local details in the hydrogeologic framework that may not be represented in HA-709 has led the USGS, in cooperation with the U.S. Environmental Protection Agency (EPA), to assess the hydrogeology of the Long Island area so ground-water-flow modeling planned by EPA can more fully reflect local hydrogeologic conditions. Objectives - The primary objective of this project is to construct geographic information system (GIS) datasets of the altitudes of the... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Basin & Hydrogeologic Characterization, Basin & Hydrogeologic Characterization, Basin & Hydrogeologic Characterization, Completed, Cooperative Water Program, All tags... GIS, water table,land surface altitude, aquifer ,well logs,maps, GW or SW, GW or SW, GW or SW, Geospatial Applications, Geospatial Applications, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, Long Island, Nassau County, New York, USGS New York Water Science Center, WSC, Water Use and Availability Science, Water Use and Availability Science, Fewer tags Groundwater Availability of the Northern Atlantic Coastal Plain Background The North Atlantic Coastal Plain (NACP) covers a land area of approximately 34,000 mi 2 along the eastern seaboard of the United States from Long Island, N.Y., southward to the northern portion of North Carolina. This area is underlain by a thick wedge of sedimentary deposits that form a complex groundwater system in which the sands and gravels function as confined aquifers, and the silts and clays function as confining units. These confined aquifers of the NACP constitute a major source of water for public and domestic supply for the nearly 27 million people living in the region, as well as being important source of water for industrial and agricultural purposes. Increases in population and changes... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Cooperative Water Program, Delaware, Focused Assessments, Focused Assessments, Focused Assessments, All tags... GW Model, GW Model, GW model, GW or SW, GW or SW, GW or SW, Groundwater-Flow Modeling, Groundwater-Flow Modeling, Groundwater-Flow Modeling, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, Maryland, New Jersey, New York, North Carolina, Northern Atlantic Coastal Plain, USGS New York Water Science Center, Virginia, WSC, Water Budget, Water Budget, Water Quality, Water Quality, Water Use and Availability Science, Water Use and Availability Science, Water budget, Water quality, aquifers, groundwater, hydrology, sediment, water supply, Fewer tags