Filters: Tags: hydraulic conductivity (X) > Extensions: ArcGIS Service Definition (X)

Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types ArcGIS REST Map Service (3) ArcGIS Service Definition (3) Downloadable (3) Map Service (3) Citation (1) Contacts Ryan F Adams Lower Mississippi-Gulf Water Science Center U.S. Geological Survey U.S. Geological Survey - ScienceBase John R. Olson More... Categories Data (3) Map (1) Tag Types Place (3) Theme (3) Harvest Set (2) USGS Scientific Topic Keyword (1) Tag Schemes None (2) USGS Thesaurus Groundwater (1) USGS Thesaurus Common geographic areas (1) USGS Thesaurus (1) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Geophysical Characteristics of the Conterminous United States: Hydraulic Conductivity (µm/s) This raster depicts the percentage of lithological the hydraulic conductivity (in micrometers per second) of surface or near surface geology. We derived these rasters by calculating the average conductivity for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service; Tags: Bedrock, Conterminous U.S., Geology, Geophysical, hydraulic conductivity Hydraulic Conductivity and Transmissivity Estimates from Slug Tests in Wells Within the Mississippi Alluvial Plain, Arkansas and Mississippi, 2020 During the spring and summer of 2020, the U.S. Geological Survey, Lower Mississippi – Gulf Water Science Center, conducted single well slug tests on selected wells within the Mississippi Alluvial Plain in Arkansas and Mississippi to estimate hydraulic conductivity (K) and transmissivity (T) values for the aquifers in which the wells are screened. A total of 324 tests were conducted on 48 wells. The computer software AQTESOLV version 4.50.002 (HydroSOLVE, Inc., 2007) was used to interpret the slug test data to estimate K and T values. Mean estimates of K for the 44 wells screened in the Mississippi River Valley alluvial aquifer ranged from 3 to 401 feet per day (ft/day) and mean estimates of T ranged from 285 to... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: 500-Foot Sand Memphis Sand, 500-Foot Sand Memphis Sand, 500-foot Sand, Ar, Arkansas, All tags... Common geographic areas, Conductivity, Groundwataer, Groundwataer, Groundwater, Hydraulic Conductivity, Hydraulic Conductivity, Instantaneous change in head test, Instantaneous change in head test, Memphis Sand, Mississippi, Mississippi Alluvial plain, Mississippi River Valley alluvial aquifer, Mississippi River Valley alluvial aquifer, Mississippi embayment aquifer system, Mississippi embayment aquifer system, Slug Test, Slug Test, Sparta Sand, Sparta Sand, Transmissivity, Transmissivity, USGS Science Data Catalog (SDC), middle Claborne aquifer, middle Claiborne aquifer, middle Claiborne aquifer, Fewer tags Waterborne Resistivity Inverted Models, Mississippi Alluvial Plain, 2016-2018 This data release consists of two .csv files of inverted models of electrical resistivity created from the processed resistivity data in the accompanying two data releases: (Miller and Others, 2018) and (2018 Raw and Processed, in progress). During 2016, 17, and 18, the U.S. Geological Survey conducted continuous resistivity profiling along 15 rivers or lakes in the Mississippi Alluvial Plain of Mississippi, Arkansas, Louisiana, and Missouri to characterize streambed hydraulic conductivity values. These techniques characterize the near surface geomorphology of the streambed that controls the recharge to the alluvial aquifer. These data can be used to map changes in the lithology of the streambed and identify areas... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Arkansas, Black River, Bogue Phalia, Cache River, Continuous Resistivity Profiling, All tags... Electrical Resistivity, Eutah Bend, Floodway, Geophysical Survey, Geophysics, Hydraulic Conductivity, Hydrogeology, Mississippi, Mississippi Alluvial Plain, Missouri, On Farm Storage, Quiver River, Roebuck Lake, Sky Lake, St. Francis River, Sunflower River, Tallahatchie River, USGS Science Data Catalog (SDC), White River, Yalobusha River, Yazoo River, inlandWaters, Fewer tags