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A digital model of the sedimentary Northern Atlantic Coastal Plain aquifer system is composed of 20 rasters and hydrogeologic unit extent polygons. Rasters describe the top elevations of regional aquifers and confining units at a resolution of 2640 feet (1/2 mile). The rasters are clipped to the extent polygons, which represent the spatial extents of the hydrogeologic units onshore and several miles offshore. This three-dimensional hydrogeologic model was constructed as part of a U.S. Geological Survey Groundwater Resources Program study of groundwater availability in the Northern Atlantic Coastal Plain (NACP) aquifer system, including parts of New York, New Jersey, Delaware, Maryland, Virginia, and North Carolina....
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A digital model of the sedimentary Northern Atlantic Coastal Plain aquifer system is composed of 20 rasters and hydrogeologic unit extent polygons. Rasters describe the top elevations of regional aquifers and confining units at a resolution of 2640 feet (1/2 mile). The rasters are clipped to the extent polygons, which represent the spatial extents of the hydrogeologic units onshore and several miles offshore. This three-dimensional hydrogeologic model was constructed as part of a U.S. Geological Survey Groundwater Resources Program study of groundwater availability in the Northern Atlantic Coastal Plain (NACP) aquifer system, including parts of New York, New Jersey, Delaware, Maryland, Virginia, and North Carolina....
Although dew is an unimportant source of moisture in humid areas, plants and arthropods living in some arid regions depend on it for survival. Further, this moisture is occasionally available during the dry summer months when plants are experiencing the greatest stress. To assess dew contribution to the annual water balances in semi-arid desert valleys, we conducted two experiments; one in a heterogeneous semi-arid desert valley in north-eastern Nevada, U.S.A. (Site A), and the other one in an irrigated homogeneous alfalfa (Medicago sativa L.) field of a semi-arid desert valley in central Utah, U.S.A. (Site B). Both sites are located in the Great Basin, Western U.S.A. Site A is considered a closed desert valley...


    map background search result map search result map Digital elevations and extents of regional hydrogeologic units in the Northern Atlantic Coastal Plain aquifer system Digital elevations and extents of regional hydrogeologic units in the Northern Atlantic Coastal Plain aquifer system Digital elevations and extents of regional hydrogeologic units in the Northern Atlantic Coastal Plain aquifer system Digital elevations and extents of regional hydrogeologic units in the Northern Atlantic Coastal Plain aquifer system