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Found 279 dataset(s) matching "Principal aquifers".
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Categorical classification of groundwater age based on concentrations of tritium (3H) in groundwater can provide useful information for the assessment and understanding of groundwater resources....
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A digital three-dimensional hydrogeologic framework model (HFM) represents the geometry and extent of hydrogeologic units (HGUs) and major structures in the Death Valley regional ground-water...
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A three-dimensional groundwater flow model (MODFLOW-2005) of the Mississippi embayment, South-Central United States, was developed as part of a national project initiated by the U.S. Geological...
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This tabular data set represents bedrock permeability classes compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual...
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A seamless map of the major groundwater areas used by community public supply wells in the United States was needed in order to describe and compute the number of equivalent people using public...
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This digital dataset defines the traces of geologic and hydrogeologic cross sections that were used in the construction of a digital three-dimensional (3D) hydrogeologic framework model (HFM) of...
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A digital three-dimensional hydrogeologic framework model (HFM) represents the geometry and extent of hydrogeologic units (HGUs) and major structures in the Death Valley regional ground- water...
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Data from more than 75,000 community public supply wells were acquired from national and state agencies. Using the information provided by the agencies, along with surficial and bedrock geologic...
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A digital three-dimensional (3D) hydrogeologic framework model (HFM) represents the geometry and extent of hydrogeologic units (HGUs) and major structures in the Death Valley regional...
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A digital three-dimensional (3D) hydrogeologic framework model (HFM) represents the geometry and extent of hydrogeologic units (HGUs) and major structures in the Death Valley regional...
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A complete set of alluvial basin boundaries in the upper Rio Grande Basin were compiled in a digital format for the groundwater component of a Focus Area Study (FAS). A literature and data search...
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This digital dataset defines the traces of geologic and hydrogeologic cross sections that were used in the construction of a digital three-dimensional (3D) hydrogeologic framework model (HFM) of...
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This data set includes results for hormone and pharmaceutical compounds analyzed in environmental and quality-control samples collected by the USGS National Water-Quality Assessment Project during...
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Long-term monotonic trends in aquifer and regional groundwater levels in the United States 1912-2020
The U.S. Geological Survey (USGS) Water Resources Mission Area (WMA) is working to address a need to understand where the Nation is experiencing water shortages or surpluses relative to the demand...
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MODFLOW2000 model used to simulate the groundwater flow of the Denver Basin Aquifer System, Colorado
A three-dimensional groundwater flow model (MODFLOW2000) of the Denver Basin bedrock aquifer system and overlying alluvial aquifer was developed to provide quantitative estimates of groundwater...
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This data set includes the audio-magnetotelluric (AMT) sounding data collected from 1997 to 2004 in and near the Rio Grande rift, New Mexico. The U.S. Geological Survey conducted a series of...
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This data set includes the audio-magnetotelluric (AMT) sounding data collected from 1997 to 2004 in and near the Rio Grande rift, New Mexico. The U.S. Geological Survey conducted a series of...
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This data set includes the audio-magnetotelluric (AMT) sounding data collected from 1997 to 2004 in and near the Rio Grande rift, New Mexico. The U.S. Geological Survey conducted a series of...
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This data set includes the audio-magnetotelluric (AMT) sounding data collected from 1997 to 2004 in and near the Rio Grande rift, New Mexico. The U.S. Geological Survey conducted a series of...
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This data set includes the audio-magnetotelluric (AMT) sounding data collected from 1997 to 2004 in and near the Rio Grande rift, New Mexico. The U.S. Geological Survey conducted a series of...
