Filters: Tags: Arkansas (X) > Types: OGC WFS Layer (X) > partyWithName: U.S. Geological Survey - ScienceBase (X)

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Felsenthal National Wildlife Refuge green-tree reservoir 2001 forest plot measurements A green-tree reservoir (GTR) is a stand of bottomland hardwoods that is intentionally flooded in the fall and winter to support migrating waterfowl. Bottomland hardwood forest plots in the GTR on Felsenthal National Wildlife Refuge (FNWR) are measured every 5-6 years to monitor tree survival, growth, and mortality. This dataset presents the measurements of all the trees in 54 plots during the year 2001. Parameters measured are species, diameter, vigor class, canopy class, and whether or not the tree is a new recruit in 2001. These parameters are defined in the Entity and Attributes section of this metadata file. Additional Information: A series of square 0.1 ha (31.6 m X 31.6 m) permanent plots was previously established... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arkansas, Felsenthal National Wildlife Refuge, biota, bottomland hardwoods, environment, All tags... forest ecosystems, green tree reservoir, green-tree reservoir, greentree reservoir, long-term ecological monitoring, plot sampling, wetland ecosystems, Fewer tags Sparta-Memphis aquifer well point dataset, in Arkansas, January-June 2015 Dataset contains the groundwater well locations and water-level measurements for 273 wells measured during a water-level survey of the Sparta-Memphis aquifer in Arkansas, January through June 2015. Well-location and water-level data is publicly available from the U.S. Geological Survey's National Water Information System. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Mississippi Embayment aquifer system, Sparta-Memphis Sand, aquifer, effects of groundwater extraction, All tags... geoscientificInformation, groundwater, groundwater flow, groundwater level, hydrogeology, water resources, Fewer tags Compilation of Geologic and Seismic Velocity Characteristics at Advanced National Seismic System Strong Motion Accelerometer Sites Near-surface site characteristics are critical for accurately modeling ground motion, which in turn influences seismic hazard analysis and design of critical infrastructure. Currently, there are many strong motion accelerometers within the Advanced National Seismic System (ANSS) that are missing this information. We use a Geographic Information Systems (GIS) based framework to intersect the site coordinates of approximately 5,500 ANSS accelerometers located throughout the United States and its territories with geology and velocity information. We consider: (1) surficial geology from digitized geologic maps (Horton, 2017; Wilson et al., 2015; Sherrod et al., 2007; Bawiec, 1999; Saucedo, 2005; Bedrossian et al., 2012;... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANSS, Alabama, American Samoa, Arizona, Arkansas, All tags... California, Colorado, Connecticut, Delaware, Florida, Geography, Geophysics, Georgia, Guam, Idaho, Illinois, Indiana, Information Sciences, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Remote Sensing, Rhode Island, Seismic site characteristics, Seismology, Soil Sciences, South Carolina, South Dakota, Strong Motion, Structural Geology, Tennesee, Texas, USGS Science Data Catalog (SDC), United States, Utah, Vermont, Virginia, Vs30, Washington, West Virginia, Wisconsin, Wyoming, earthquake seismology, seismic stations, vs30 measurements, vs30 proxy, Fewer tags Survey Data Collection for the Planning Assistance to the States Study along Little Sugar Creek and Selected Tributaries near Bella Vista, Arkansas, and Pineville, Missouri, December 2019 This dataset describes the Survey Data collected for the Planning Assistance to the States (PAS) study along Little Sugar Creek and selected tributaries, near Bella Vista, Arkansas, and Pineville, Missouri, December 2019. Little Sugar Creek is a tributary to the Elk River in Missouri that commences in Benton County, Arkansas and terminates in McDonald County, Missouri. The stream headwaters are located southeast of Garfield, Arkansas. Little Sugar Creek flows through Bella Vista, Arkansas, and runs north to its confluence with the Big Sugar Creek just south of Pineville, Missouri where it forms the Elk River. Browning Creek, Blowing Spring Creek, Spanker Creek and McKisic Creek are all tributaries to the Little... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ASCII, Arkansas, Bella Vista, Hydrology, Missouri, All tags... Pineville, State Plane, U.S. Geological Survey (USGS), USGS Science Data Catalog (SDC), United States Army Corps of Engineers (USACE), Water Resources, bathymetry, elevation, geology, inlandWaters, transportation, water depth, Fewer tags Global Geochemical Database for Critical Minerals in Archived Mine Samples The Critical Minerals in Archived Mine Samples Database (CMDB) contains chemistry and geologic information for historic ore and ore-related rock samples from mineral deposits in the United States. In addition, the database contains samples from archetypal deposits from 27 other countries in North America, South America, Asia, Africa and Europe. Samples were obtained from archived ore collections under the U.S. Geological Survey's project titled "Quick Assessment of Rare and Critical Metals in Ore Deposits: A National Assessment" (2008 to 2013) in an effort to begin an assessment of the Nations' previously mined ore deposits for critical minerals. Mineralized and altered rock samples were provided by the Colorado... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Argentina, Arizona, Arkansas, Australia, All tags... Brazil, Burma, California, Canada, Chile, China, Colorado, Cuba, Democratic Republic of Congo, Economic Geology, Finland, Geochemistry, Germany, Honduras, Idaho, India, Indonesia, Japan, Kansas, Kentucky, Maine, Mauritania, Mexico, Michigan, Mineral Resources, Minnesota, Missouri, Montana, NGDB, Namibia, National Geochemical Database, Nevada, New Jersey, New Mexico, New York, North Carolina, Norway, Oklahoma, Oregon, Papua New Guinea, Pennsylvania, Peru, Philippines, Poland, Portugal, Russia, South Africa, South Carolina, South Dakota, Sweden, Tennessee, Texas, USGS Science Data Catalog (SDC), United States, Utah, Vietnam, Virginia, Washington, Wisconsin, Wyoming, Zambia, aluminum, antimony, arsenic, atomic emission spectroscopy, barium, beryllium, bismuth, boron, cadmium, calcium, cerium, chemical analysis, chromium, cobalt, copper, critical minerals, dysprosium, economic geology, erbium, europium, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientific information, germanium, gold, hafnium, historic ores, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, metallic mineral resources, mineral deposit type, mineral deposits, mineralogy, molybdenum, neodymium, nickel, niobium, nonmetallic mineral resources, palladium, phosphorus, platinum, potassium, praseodymium, rhenium, rock geochemistry, rocks and deposits, samarium, scandium, silicon, silver, strontium, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags Structure Contours of the Base of the Sparta Sand from Plate 3, 1968, from Hydrologic significance of the lithofacies of the Sparta Sand in Arkansas, Louisiana, Mississippi, and Texas (Payne, 1968) The study of the geohydrology of the Sparta Sand is the initial phase in the investigation of the geohydrology of the Claiborne Group. The thicker sections of the Sparta Sand lie along the axes of the Mississippi embayment and Desha basin. The area of maximum thickness, 1,100-1,200 feet, is in Claiborne and Warren Counties, Miss., and Madison Parish, La. Local thickening or thinning over some structures indicates structural movement during Sparta time. A sand-percentage map prepared from data derived from interpretation of electric logs indicates that the Sparta Sand was deposited as a delta-fluvial plain complex in Arkansas, Louisiana, and Mississippi. This complex shows a text-book example of a well-developed... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Louisiana, Mississippi, Mississippi Embayment, Sparta Sand, All tags... base, groundwater, structure contour, Fewer tags Digitized Maps of the Potentiometric Surface of the Sparta Aquifer in North-Central Louisiana, 1886 to 2012 (ver. 1.1, April 2021) The Sparta aquifer is a primary source of groundwater in north-central Louisiana with more than 60 million gallons of water per day being withdrawn in 2015, and public supply and Industry account for over 90 percent of the water-use demand from the Sparta aquifer (Collier, 2018). Concentrated withdrawals from the Sparta aquifer have caused regional water-level declines within the Sparta aquifer (McGee and Brantly, 2015). Widespread concern about the potential effects of declining water levels has brought forth many questions regarding the sustainability of the aquifer as well as continued saltwater intrusion. In cooperation with the Louisiana Department of Transportation and Development, the U.S. Geological Survey... Categories: Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arkansas, Kentucky, Louisiana, Memphis aquifer, Mississippi, All tags... Mississippi Embayment, Missouri, Sparta Aquifer, Sparta Sand, Tennessee, USGS Science Data Catalog (SDC), freshwater extent, groundwater, potentiometric surface, volume change, water-level, Fewer tags Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2019 - March 2020 Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired November 2019 to March 2020 along 24,030 line-kilometers (line-km) over the Mississippi Alluvial Plain (MAP). Data were acquired by CGG Canada Services, Ltd. with three different airborne sensors: the CGG Canada Services, Ltd. TEMPEST time-domain AEM instrument that is used to map subsurface geologic structure at depths up to 300 meters (m), depending on the subsurface resistivity; a Scintrex CS-3 cesium vapor magnetometer that detects changes in deep (hundreds of meters to kilometers) geologic structure based on variations in the magnetic properties of different formations; and a Radiation Solutions RS-500 spectrometer that detects the... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Arkansas River, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... Hydrology, Illinois, Louisiana, MRVA, Mississippi, Mississippi Alluvial Plain, Mississippi River, Mississippi River Valley Alluvial aquifer, Missouri, New Madrid Seismic Zone, Shellmound, Tennessee, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), WAUSP, Water Availability and Use Science Program, Water Resources, aeromagnetic surveying, aeroradiometric surveying, electromagnetic surveying, electromagnetics, engineering sciences, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, groundwater, hydrogeology, hydrology, magnetic field, magnetics, potassium, radiometrics, resistivity, thorium, uranium, water resources, Fewer tags Summary of basin characteristics for National Hydrography Dataset, version 2 catchments in the southeastern United States, 1950 - 2010 This dataset provides numerical and categorical descriptions of 48 basin characteristics for 956 basins with observed streamflow information and 9,314 ungaged basins coinciding with 12-digit hydrologic unit code (HUC12) pour points that drain to the Gulf of Mexico. Characteristics are indexed by National Hydrography Dataset (NHD) version 2 COMID (integer that uniquely identifies each feature in the NHD) and U.S. Geological Survey (USGS) station number for streamflow-gaging station, where applicable. The variables represent mutable and immutable basin characteristics and are organized by characteristic type: physical (5), hydrologic (6), categorical (12), climate (6), landscape alteration (7), and land cover (12).... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Alabama, Arkansas, Basin characteristics, Florida, Georgia, All tags... Gulf Coast, Gulf Coast, Louisiana, Mississippi, RESTORE, Tennessee, Texas, USGS Science Data Catalog (SDC), United States, categorical, network optimization, reference hydrology, streamflow processes, Fewer tags Directory of Public Repositories of Geological Materials Overview This directory was developed to provide discovery information for anyone looking for publicly accessible repositories that house geological materials in the U.S. and Canada. In addition, this resource is intended to be a tool to facilitate a community of practice. The need for the directory was identified during planning for and follow-up from a drill core repository webinar series in Spring 2020 for public repository curators and staff in the U.S. and Canada hosted by the Minnesota Geological Survey and the Minnesota Department of Natural Resources. Additional supporting sponsors included the U.S. Geological Survey National Geological and Geophysical Data Preservation Program and the Association of American... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Alaska, Alberta, Arkansas, British Columbia, All tags... Canada, Colorado, Connecticut, Delaware, Economic Geology, Energy Resources, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Marine Geology, Maryland, Massachusetts, Michigan, Mineral Resources, Minnesota, Missouri, Nebraska, Nevada, New Jersey, New York, Newfoundland, North Carolina, North Dakota, Northwest Territories, Nova Scotia, Ohio, Oklahoma, Ontario, Pennsylvania, Saskatchewan, South Carolina, South Dakota, Texas, USGS Science Data Catalog (SDC), United States, Utah, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon, directories, drilling and coring, fossils, geoscientificInformation, igneous rocks, metamorphic rocks, mineral deposits, petroleum, sample repositories, sedimentary rocks, specimen collecting, unconsolidated deposits, Fewer tags Wild and Scenic Rivers 2018 Linked to the NHDPlusV2.1 These data depict the National Hydrography Dataset Plus Version 2.1 (NHDPlusV2.1) flowline representation of the National Wild and Scenic Rivers System throughout the conterminous United States as of 2018. U.S. Forest Service geospatial data on National Wild and Scenic River segments (USFS WSR Segment) from 3/1/2016 were joined to the NHDPlusV2.1 to create the Wild and Scenic Rivers 2018 Linked to the NHDPlusV2.1 (wsr_nhdpv2.1) data. To ensure these data correctly represented the NHDPlusV2.1 flowline delineation of the National Wild and Scenic Rivers System, each wsr_nhdpv2.1 river segment was examined against the USFS WSR Segment data to check for duplication and/or omission of Wild and Scenic River segments. Spatial... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Arizona, Arkansas, California, Colorado, All tags... Connecticut, Conterminous, Delaware, Florida, Georgia, Hydrography, Hydrology, Idaho, Illinois, Kentucky, Lotic, Louisiana, Maine, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NFHP Cooperator, NHDPlus, NHDPlusV2, NHS, National, National Hydrography Dataset, Nebraska, New Hampshire, New Jersey, New Mexico, New York, NoVisual, North Carolina, Ohio, Oregon, Pennsylvania, Recreation, River, Scenic, South Carolina, South Dakota, Spatial Data, Stream, Tennessee, Texas, USA, USFS, USGS, USGS Science Data Catalog (SDC), United States, United States of America, Utah, Vermont, WSR, Washington, Water Resources, West Virginia, Wild, Wisconsin, Wyoming, Fewer tags Airborne electromagnetic, magnetic, and radiometric surveys of the Mississippi Alluvial Plain and Chicot Aquifer System, March 2018 and May - August 2021 Airborne geophysical surveys were acquired in March 2018 and May 25 through August 7, 2021 using a helicopter-based platform. These surveys were collected along 10,706 line-kilometers (line-km) within selected areas of the Mississippi Alluvial Plain (MAP) and the Chicot Aquifer System in the southeastern United States. The airborne geophysical surveys include electromagnetic, magnetic, and radiometric sensor data collected in rivers and levees throughout the two areas to evaluate groundwater and surface-water interaction, riverine ecosystems, and infrastructure. This data release contains three child items that provide: Minimally processed (raw) data supplied by the airborne contractor (Xcalibur Multiphysics)... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: "Geomorphology"], "Hydrology", "Sedimentology", "Stratigraphy", "Water Resources", All tags... Arkansas, Arkansas River, Bayou Lacassine, Bayou Teche, Big Sunflower River, Black River, Bogue Phalia, Calcasieu River, Chicot aquifer, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Illinois, Little Red River, Little Sunflower River, Louisiana, MRVA, Mermentau River, Mississippi, Mississippi Alluvial Plain, Mississippi River, Mississippi River Valley Alluvial aquifer, Missouri, Obion River, Ouachita River, Raccourci Old River, Sabine River, Saline River, Tennessee, Tensas River, USGS Science Data Catalog (SDC), Vermillion River, WAUSP, Water Availability and Use Science Program, White River, ["Geophysics", aeromagnetic surveying, aeroradiometric surveying, electromagnetic surveying, electromagnetics, engineering sciences, environment, geophysics, geoscientificInformation, geospatial datasets, groundwater, hydrogeology, magnetic field, magnetics, radiometrics, resistivity, water resources, Fewer tags Spring Point Dataset of the Potentiometric Surface of Groundwater-Level Altitudes Near the Planned Highway 270 Bypass, East of Hot Springs, Arkansas, July-August 2017 This dataset consists of altitudes of 18 springs located throughout the study area which were used in construction of the potentiometric-surface map. Springs were selected from the previously published report by Kresse and Hays (2009), and site reconnaissance. Surface-water features and springs represent the intersection of the groundwater-table with land surface. Spring altitudes were calculated from 10-meter digital elevation model (DEM) data (U.S. Geological Survey, 2015; U.S. Geological Survey, 2016) . Select References: Kresse, T.M., and Hays, P.D., 2009, Geochemistry, Comparative Analysis, and Physical and Chemical Characteristics of the Thermal Waters East of Hot Springs National Park, Arkansas, 2006-09:... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Garland, Hot Springs, groundwater, groundwater and surface-water interaction, All tags... groundwater flow, hydrogeology, Fewer tags Groundwater withdrawal zones for drinking water from the Mississippi River Valley alluvial aquifer and Mississippi embayment aquifers Of the approximately 6.6 million people living in the Mississippi embayment (MISE) region in the central United States, approximately 65 percent rely on groundwater for their drinking water (Dieter, Linsey, and others, 2017). Regional assessments of water quality in principal aquifer systems provide context for the long-term availability of these water resources for drinking-water supplies. To assess the current (2018) status of water quality in MISE in relation to drinking water supplies, groundwater withdrawal zones used for domestic and public supply were modeled using available groundwater well and hydrogeologic framework data. Three dimensional surfaces were modeled to map the depth zones at which groundwater... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, Raster, Shapefile; Tags: Alabama, Arkansas, Hydrology, Illinois, Kentucky, All tags... Louisiana, Mississippi, Tennessee, USGS Science Data Catalog (SDC), Water Quality, Water Resources, aquifer, drinking water use, groundwater, water quality, Fewer tags Felsenthal National Wildlife Refuge green-tree reservoir 2016 forest plot measurements A green-tree reservoir (GTR) is a stand of bottomland hardwoods that is intentionally flooded in the fall and winter to support migrating waterfowl. Bottomland hardwood forest plots in the GTR on Felsenthal National Wildlife Refuge (FNWR) are measured every 5-6 years to monitor tree survival, growth, and mortality. This dataset presents the measurements of all the trees in 54 plots during the year 2016. Parameters measured are species, diameter, vigor class, canopy class, whether or not the tree is a new recruit in 2016, whether the tree is a tip-up (windthrow) or a gap tree in 2016, and whether Hypoxylon canker fungus is present on the tree in 2016. These parameters are defined in the Entity and Attributes section... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arkansas, Felsenthal National Wildlife Refuge, biota, bottomland hardwoods, environment, All tags... forest ecosystems, green tree reservoir, green-tree reservoir, greentree reservoir, long-term ecological monitoring, plot sampling, wetland ecosystems, Fewer tags Digital surfaces of the bottom altitude and thickness of the Mississippi River Valley alluvial aquifer and site data within the Mississippi Alluvial Plain project region Bottom altitudes of the Mississippi River Valley alluvial aquifer (MRVA) were compiled from interpretations of subsurface geophysical logs (log picks) at about 10,000 boreholes and wells located throughout the Mississippi Alluvial Plain (MAP) that were available from previous investigations. Five sources of the bottom altitude data are listed numerically in the Cross Reference section (below) and correspond with the Ref_code listed in the .shp dataset. Borehole geophysical data (log picks) were referenced (corrected) to the National Elevation Dataset (NED) 10-meter digital elevation model (DEM; https://nationalmap.gov/elevation.html). Log picks that required a DEM correction of less than 20 feet were retained for... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Arkansas River, Cross Validation, Crowley's Ridge, Geostatistics, All tags... Kriging, Louisiana, Lower Mississippi-Gulf Water Science, Mississippi, Mississippi Alluvial Plain, Mississippi River, Mississippi River Delta, Mississippi River Valley Alluvial Aquifer, Mississippi Valley, Missouri, Tennessee, USGS Science Data Catalog (SDC), Variogram modeling, hydrogeology, Fewer tags Bathymetry and Storage Capacity of Nimrod Lake, Arkansas A bathymetric survey of Nimrod Lake, Arkansas, was conducted in late April to mid-May, 2016, by the Lower Mississippi-Gulf Water Science Center (LMG WSC) of the U.S. Geological Survey (USGS) using methodologies for sonar surveys similar to those described by Wilson and Richards (2006) and Richards and Huizinga (2018). Point data from the bathymetric survey were merged with point data from an aerial LiDAR survey conducted in December, 2010, that were provided by the U.S. Army Corps of Engineers (USACE), Little Rock District. From the combined point dataset, a terrain dataset (a type of triangulated irregular network, or TIN, model) was created in Esri ArcGIS, version 10.5, for the area within the approximate extent... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ADCP, AR, ASCII, Acoustic, Arkansas, All tags... Bathymetry and Elevation, Doppler, GNIS ID 75802, LIDAR, Nimrod Lake, Perry County, USGS Science Data Catalog (SDC), Water Depth, XYZ, Yell County, digital terrain models, elevation, inlandWaters, limnology, sonar, terrain dataset, Fewer tags Well Point Dataset of the Potentiometric Surface of Groundwater-Level Altitudes Near the Planned Highway 270 Bypass, East of Hot Springs, Arkansas, July-August 2017 These data include groundwater-level data from 59 wells measured from July to August 2017. Measured groundwater data are also available from the USGS National Water Information System (U.S. Geological Survey, 2018) Well locations were selected from three sources: previously reported sites (Kresse and Hays, 2009), site reconnaissance, and driller’s logs obtained from the Arkansas Natural Resources Commission driller database. Reference: U.S. Geological Survey, 2018, USGS water data for the Nation: U.S. Geological Survey National Water Information System database, accessed 1 July 2017 at http://dx.doi.org/10.5066/F7P55KJN. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Garland, Hot Springs, digital elevation models, domestic well water use, All tags... groundwater, groundwater flow, groundwater level, hydrogeology, topography, Fewer tags Contour Dataset of the Potentiometric Surface of Groundwater-Level Altitudes Near the Planned Highway 270 Bypass, East of Hot Springs, Arkansas, July-August 2017 This dataset contains 50-ft contours for the Hot Springs shallowest unit of the Ouachita Mountains aquifer system potentiometric-surface map. The potentiometric-surface shows altitude at which the water level would have risen in tightly-cased wells and represents synoptic conditions during the summer of 2017. Contours were constructed from 59 water-level measurements measured in selected wells (locations in the well point dataset). Major streams and creeks were selected in the study area from the USGS National Hydrography Dataset (U.S. Geological Survey, 2017), and the spring point dataset with 18 spring altitudes calculated from 10-meter digital elevation model (DEM) data (U.S. Geological Survey, 2015; U.S. Geological... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Garland, Hot Springs, aquifer, elevation, All tags... elevation, groundwater, groundwater and surface-water interaction, groundwater flow, groundwater level, hydrogeology, Fewer tags (c) Surface-water altitude data, from streamgages, considered for the potentiometric surface map, Mississippi River Valley alluvial aquifer, spring 2016 A potentiometric surface map for spring 2016 was created for the Mississippi River Valley alluvial (MRVA) aquifer, which was referenced to the North American Vertical Datum of 1988 (NAVD 88), using most of the available groundwater-altitude data from wells and surface-water-altitude data from streamgages. Most of the wells were measured annually or one time, after installation, but some wells were measured more than one time in a year and a small number of wells were measured continually. Streamgages were typically operated continuously. The potentiometric surface map for 2016 was created as part of the U.S. Geological Survey (USGS) Water Availability and Use Science Program to support investigations that characterize... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arkansas, Illinois, Kentucky, LMG, Louisiana, All tags... Lower Mississippi Gulf Water Science Center, MAP, MRVA aquifer, Mississippi, Mississippi Alluvial Plain, Mississippi Alluvial Plain, Mississippi River Delta, Mississippi River Valley alluvial aquifer, Missouri, Tennessee, U.S. Geological Survey, U.S.Geological Survey, USGS, Water Availability and Use Science Program, aquifers, geoscientificInformation, ground water, groundwater, groundwater levels, inlandWaters, potentiometric surface, surface-water altitude, water table, Fewer tags 1 2 3 4 »