372 datasets found
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Federal
Point Shapefile with a Point Every 100 meters along the Cape Cod National Seashore Resistivity Survey tracklines, Feb. 28, 2006
Department of the Interior —
Continuous resistivity profiling (CRP) surveys were conducted at Cape Cod National Seashore in 2004 and 2006 in order to test hypotheses about groundwater flow under... -
Federal
Model grid and infiltration values for the transient ground-water flow model, Death Valley regional ground-water flow system, Nevada and California
Department of the Interior —
This digital data set defines the model grid and infiltration values simulated in the transient ground-water flow model of the Death Valley regional ground-water flow... -
Federal
Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for drainageditch (gwava-dw_ddit)
Department of the Interior —
This data set represents the area of National Resources Inventory surface drainage, field ditch conservation practice, in square kilometers, in the conterminous... -
Federal
Comma-delimited Text File of Piezometer Groundwater Data Collected August, 2005 in the Nauset Marsh Area of Cape Cod, Massachusetts
Department of the Interior —
In order to test hypotheses about groundwater flow under and into estuaries and the Atlantic Ocean, geophysical surveys, geophysical probing, submarine groundwater... -
Federal
Digital data sets that describe aquifer characteristics of the Enid isolated terrace aquifer in northwestern Oklahoma
Department of the Interior —
This data set consists of a digitized polygon of a constant recharge value for the Enid isolated terrace aquifer in northwestern Oklahoma. The Enid isolated terrace... -
Federal
Digital data sets that describe aquifer characteristics of the Rush Springs aquifer in western Oklahoma
Department of the Interior —
This data set consists of digitized polygons of constant recharge values for the Rush Springs aquifer in western Oklahoma. This area encompasses all or part of... -
Federal
Boundary of the Death Valley region by Bedinger and others (1989), for the Death Valley regional ground-water flow system study, Nevada and California
Department of the Interior —
This digital data set delineates the boundary of the Death Valley region that was first evaluated by the U.S. Geological Survey (USGS) as a potential hydrogeologic... -
Federal
Ground-water flow lines used in the generalized potentiometric surface of the Arikaree aquifer, Pine Ridge Indian Reservation and Bennett County, South Dakota
Department of the Interior —
This data set shows the ground-water flow lines for the Arikaree aquifer that were used to create a map of the generalized potentiometric surface of the Arikaree... -
Federal
Raster dataset showing the probability of elevated concentrations of nitrate in ground water in Colorado, hydrogeomorphic regions included and fertilizer use estimates not included.
Department of the Interior —
This dataset is one of eight datasets produced by this study. Four of the datasets predict the probability of detecting atrazine and(or) desethyl-atrazine (a... -
Federal
Digital map of water levels in 1980 for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
Department of the Interior —
This digital data set consists of contours for 1980 water-level elevations for the High Plains aquifer in the central United States. The High Plains aquifer extends... -
Federal
Point Shapefile of Core Locations Collected August, 2006 in the Nauset Marsh Area of Cape Cod, Massachusetts
Department of the Interior —
In order to test hypotheses about groundwater flow under and into estuaries and the Atlantic Ocean, geophysical surveys, geophysical probing, submarine groundwater... -
Federal
Historical boundary of the Death Valley regional ground-water flow system by Harrill and Prudic (1998), for the Death Valley regional ground-water flow system study, Nevada and California
Department of the Interior —
This digital data set is a historical definition of the extent (approximately 42,600 square-kilometers) and lateral boundary of the Death Valley regional ground-water... -
Federal
Digital data sets that describe aquifer characteristics of the Elk City aquifer in western Oklahoma
Department of the Interior —
This data set consists of digitized aquifer boundaries for the Elk City aquifer in western Oklahoma. The aquifer covers an area of approximately 193,000 acres and... -
Federal
Potentiometric surface, Mississippi River Valley alluvial aquifer, spring 2016, raster format, in meters
Department of the Interior —
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... -
Federal
Digital data sets that describe aquifer characteristics of the Tillman terrace and alluvial aquifer in southwestern Oklahoma
Department of the Interior —
This data set consists of digital polygons of constant hydraulic conductivity values for the Tillman terrace and alluvial aquifer in southwestern Oklahoma. The... -
Federal
Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for water input (gwava-s_wtin)
Department of the Interior —
This data set represents "water input," the ratio of the total area of irrigated land to precipitation, in square kilometers per centimeter, in the conterminous... -
Federal
Digital data sets that describe aquifer characteristics of the Antlers aquifer in southeastern Oklahoma
Department of the Interior —
This data set consists of digitized water-level elevation contours for the Antlers aquifer in southeastern Oklahoma. The Early Cretaceous-age Antlers Sandstone is an... -
Federal
Enforcement and Compliance Information Center - ECIC
U.S. Environmental Protection Agency —
Enforcement and Compliance Information Center - ECIC is a repository of external policy and guidance documents, links to cases and settlements, civil and criminal... -
Federal
Spatial data set of mapped water-level changes in the High Plains aquifer, predevelopment (about 1950) to 2015
Department of the Interior —
The High Plains aquifer extends from south of about 32 degrees to almost 44 degrees north latitude and from about 96 degrees 30 minutes to 106 degrees west longitude.... -
Federal
Digital data sets that describe aquifer characteristics of the Elk City aquifer in western Oklahoma
Department of the Interior —
This data set consists of digitized polygons of constant recharge values for the Elk City aquifer in western Oklahoma. The aquifer covers an area of approximately...
372 datasets found