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Filters Date Types (for Date Range) Contacts Anna M. Nottmeier U.S. Geological Survey, Lower Mississippi-Gulf Water Science Center Lower Mississippi-Gulf Water Science Center U.S. Geological Survey Science Analytics and Synthesis More... Categories Data (2) Tag Schemes Geographic Names Information System (GNIS) (69) USGS Groundwater Information: Principal Aquifers of the United States (2) USGS Geographic Names Information System (1) Tags (with Type=Place ) arkansas (2) alabama (1) alaska (1) appalachian (1) arizona (1) california (1) central united states (1) More... View Results as: JSON ATOM CSV

GAP/LANDFIRE National Terrestrial Ecosystems 2011 The GAP National Terrestrial Ecosystems - Ver 3.0 is a 2011 update of the National Gap Analysis Project Land Cover Data - Version 2.2 for the conterminous U.S. The GAP National Terrestrial Ecosystems - Version 3.0 represents a highly thematically detailed land cover map of the U.S. The map legend includes types described by NatureServe's Ecological Systems Classification (Comer et al. 2002) as well as land use classes described in the National Land Cover Dataset 2011 (Homer et al. 2015). These data cover the entire continental U.S. and are a continuous data layer. These raster data have a 30 m x 30 m cell resolution. GAP used the best information available to create the land cover data; however GAP seeks to improve... Categories: Data; Types: Map Service, OGC WMS Layer; Tags: Alabama, Alaska, Appalachian, Arizona, Arkansas, All tags... California, Central United States, Colorado, Connecticut, Continental United States, Delaware, Desert, District of Columbia, Eastern Tallgrass Prairie and Big Rivers, Florida, Georgia, Great Basin, Great Northern, Great Plains, Gulf Coast Plains and Ozarks, Gulf Coast Prairie, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Landscape Conservation Cooperatives, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Atlantic, North Carolina, North Dakota, Northeastern United States, Northwestern United States, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Southeastern United States, Southern Rockies, Southwestern United States, Tennessee, Texas, USGS Science Data Catalog (SDC), Upper Midwest and Great Lakes, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, biota, ecology, environment, land cover, remote sensing, terrestrial ecosystems, vegetation, vegetation, wildlife habitat, Fewer tags Potentiometric surface dataset of the Sparta-Memphis aquifer in Arkansas, January 2013 - May 2013 (ver. 1.2, June 2021) The U.S. Geological Survey (USGS), in cooperation with the Arkansas Natural Resources Commission, Arkansas Geological Survey, and the Union County Water Conservation Board, has monitored water levels as a part of an ongoing effort to provide information for management of the Sparta-Memphis aquifer. The USGS has produced reports, at various intervals, to describe groundwater conditions in the Sparta-Memphis aquifer. These datasets provide the locations of and groundwater-level altitudes from 306 wells that were used to construct a potentiometric contour surface of the Sparta-Memphis aquifer. Measurements were made from January through May 2013 and represent synoptic conditions. All wells were cased completely in... Categories: Data; Types: Map Service, OGC WMS Layer; Tags: Arkansas, Mississippi Embayment aquifer system, Sparta-Memphis Sand, USGS Science Data Catalog (SDC), aquifer, All tags... geoscientificInformation, groundwater, groundwater flow, groundwater level, hydrogeology, water resources, water well, Fewer tags