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Filters: partyWithName: Katherine J Knierim (X) > Types: OGC WMS Layer (X)

Folders: ROOT > ScienceBase Catalog > USGS Lower Mississippi-Gulf Water Science Center ( Show direct descendants )

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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...
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This dataset compiled 24 years of U.S. Geological Survey (USGS) seepage-run data from 15 studies covering southern Missouri and northern Arkansas in the Ozark Plateaus Physiographic Province (Ozarks). Previously these data were only available separately from the original USGS studies. The dataset can be used in surface-water and groundwater investigations assessing water quantity, quality, and availability in the Ozarks. The dataset includes "Ozark Plateaus seepage flow-line dataset, southern Missouri and northern Arkansas, 1982-2006" and "Ozark Plateaus seepage point dataset, southern Missouri and northern Arkansas, 1982-2006". Seepage-run data were collected by measuring discharge at points along a stream,...
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This dataset was compiled to summarize discharge measurements from several published groundwater and surface-water studies in the Ozarks of southern Missouri and northern Arkansas. The discharge measurements were part of numerous USGS studies to assess interaction between streams and groundwater aquifers. A gaining stream is described as a surface-water stream that gains water from the groundwater aquifer and a losing stream is described as a surface-water stream that loses water to the groundwater aquifer. This product is intended to be used in surface-water and groundwater investigations assessing water quantity, quality, and availability. The product includes flow-line data digitized along National Hydrography...
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The Mississippi River Valley alluvial aquifer (MRVA) overlies and is bounded by several regional aquifers that make up the Mississippi embayment aquifer system (MEAS) in the central United States. The MRVA, which consists of Quaternary alluvium, is one of the most heavily pumped aquifers in the nation and is a major source of groundwater for irrigation. Large groundwater-level declines in portions of the aquifer have raised concerns about sustainable use of this important resource. An aquifer-scale assessment of groundwater-age categories based on tritium concentrations was completed to better understand groundwater availability and susceptibility. The presence of tritium, a radioactive isotope of hydrogen, in a...
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Groundwater from the Mississippi River Valley alluvial aquifer (MRVA), coincident with the Mississippi Alluvial Plain (MAP), is a vital resource for agriculture and drinking-water supplies in the central United States. Water availability can be limited in some areas of the aquifer by high concentrations of salinity, measured as specific conductance. Boosted regression trees (BRT), a type of ensemble-tree machine-learning method, were used to predict specific conductance concentration at multiple depths throughout the MRVA and underlying aquifers. Two models were created to test the incorporation of datasets from a regional aerial electromagnetic (AEM) survey and evaluate model performance. Explanatory variables...
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This dataset was compiled to summarize discharge measurements from several published groundwater and surface-water studies in the Ozarks of southern Missouri and northern Arkansas. The discharge measurements were part of numerous USGS studies to assess interaction between streams and groundwater aquifers. A gaining stream is described as a surface-water stream that gains water from the groundwater aquifer and a losing stream is described as a surface-water stream that loses water to the groundwater aquifer. This product is intended to be used in surface-water and groundwater investigations assessing water quantity, quality, and availability. The product includes point data of discharge measurements digitized from...
    map background search result map search result map Ozark Plateaus seepage run dataset, southern Missouri and northern Arkansas, 1982-2006 Ozark Plateaus seepage point dataset, southern Missouri and northern Arkansas, 1982-2006 Ozark Plateaus seepage flow-line dataset, southern Missouri and northern Arkansas, 1982-2006 Groundwater withdrawal zones for drinking water from the Mississippi River Valley alluvial aquifer and Mississippi embayment aquifers Machine-learning model predictions and rasters of groundwater salinity in the Mississippi Alluvial Plain Groundwater age categories based on tritium concentrations in samples collected from the Mississippi River Valley alluvial aquifer and aquifers of the Mississippi embayment principal aquifer system Ozark Plateaus seepage point dataset, southern Missouri and northern Arkansas, 1982-2006 Ozark Plateaus seepage flow-line dataset, southern Missouri and northern Arkansas, 1982-2006 Ozark Plateaus seepage run dataset, southern Missouri and northern Arkansas, 1982-2006 Machine-learning model predictions and rasters of groundwater salinity in the Mississippi Alluvial Plain Groundwater age categories based on tritium concentrations in samples collected from the Mississippi River Valley alluvial aquifer and aquifers of the Mississippi embayment principal aquifer system Groundwater withdrawal zones for drinking water from the Mississippi River Valley alluvial aquifer and Mississippi embayment aquifers