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Groundwater is an often overlooked freshwater resource compared to surface water, but groundwater is used widely across the United States, especially during periods of drought. If groundwater models can successfully simulate past conditions, they may be used to evaluate potential future pumping scenarios or climate conditions, thus providing a valuable planning tool for water-resource managers. Quantifying the groundwater-use component for a groundwater model is a vital but often challenging endeavor. This dataset includes groundwater withdrawal rates modeled for the Ozark Plateaus aquifer system (Ozark system) from 1900 to 2010 by groundwater model cell (2.6 square kilometers) for five water-use divisions: agriculture...
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A hydrogeologic framework of the Ozark Plateaus aquifer system was constructed as the base for a groundwater flow model developed as part of the U.S. Geological Survey Water Availability and Use Science Program to aid in the understanding of groundwater availability in select aquifer systems of the United States. The Ozark Plateaus aquifer system study area (hereinafter referred to as the “Ozark system”) is nearly 70,000 square miles and includes parts of Arkansas, Kansas, Missouri, and Oklahoma. A hydrogeologic framework was constructed to represent the altitudes and thicknesses of nine hydrogeologic units within the Ozark Plateaus aquifer system - . the Western Interior Plains confining system, Springfield Plateau...
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This dataset includes the magnetotelluric (MT) sounding data collected in 2009 in and near the San Luis Basin, New Mexico. The U.S. Geological Survey conducted a series of multidisciplinary studies, including MT surveys, in the San Luis Basin to improve understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits comprising the principal groundwater aquifers of the Rio Grande rift. The shallow unconfined and the deeper confined Santa Fe Group aquifers in the San Luis Basin are the main sources of municipal water for the region. The population of the San Luis Basin region is growing rapidly and water shortfalls could have serious consequences. Future growth and land management...
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This dataset shows the altitude at which the water level would have risen in tightly cased wells and represents conditions during the period from November 2014 through January 2015. Water levels were measured during this period to ensure that wells had adequate time to recover from previous summer pumping and prior to the start of the 2015 summer pumping season. Groundwater-level data from 178 wells cased completely in and open to the Ozark aquifer are available from the USGS National Water Information System (NWIS; data available at http://water.data.usgs.gov/nwis). Groundwater wells were determined to be completed within Ozark aquifer geologic units by evaluating lithology from geophysical logs, groundwater driller...
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The regional Ozark aquifer potentiometric-surface map shows the altitude at which the water level would have risen in tightly cased wells and represents conditions during the period from November 2014 through January 2015. Water levels were measured during this period to ensure that wells had adequate time to recover from previous summer pumping and prior to the start of the 2015 summer pumping season. Groundwater-level data from 178 wells cased completely in and open to the Ozark aquifer are available from the USGS National Water Information System (NWIS; data available at http:// waterdata.usgs.gov/nwis). Streams and springs in the study area represent the intersection of the groundwater table with land surface;...
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These contours represent water level change in the shallow aquifer in Lahontan Valley from 1992 - 2012 based on depth-to-groundwater measurements made in 73 wells in 1992 and 2012, with limited measurements made in 2013. Measurements collected in 2013 were used to develop the contours only in limited cases where the measurement well was being pumped or was inaccessible in 2012. Water-level change in the shallow aquifer was determined by differencing measurements made in 1992 with current measurements. The difference values were used to interpolate a change surface and contours were developed from that surface.
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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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A hydrogeologic framework of the Ozark Plateaus aquifer system was constructed as the base for a groundwater flow model developed as part of the U.S. Geological Survey Water Availability and Use Science Program to aid in the understanding of groundwater availability in select aquifer systems of the United States. The Ozark Plateaus aquifer system study area (hereinafter referred to as the “Ozark system”) is nearly 70,000 square miles and includes parts of Arkansas, Kansas, Missouri, and Oklahoma. A hydrogeologic framework was constructed to represent the altitudes and thicknesses of nine hydrogeologic units within the Ozark Plateaus aquifer system - . the Western Interior Plains confining system, Springfield Plateau...
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These contours represent water levels based on depth-to-groundwater measurements made at 98 wells in July of 2012 in the Lahontan Valley near Fallon, NV. Water level measurements collected before or after July of 2012 were included only in cases where the well was being pumped or was inaccessible in July 2012. The contours were developed to compare with 1992 water level altitude contoured by Seiler and Allander (1993). References cited: Seiler, R.L., Allander, K.K., 1993, Water-Level Changes and Directions of Ground-Water Flow in the Shallow Aquifer, Fallon Area, Churchill County, Nevada: U.S. Geological Survey Water-Resources Investigations Report 93-4118, 74 p. http://pubs.er.usgs.gov/publication/wri934118
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This data set consists of 1:500,000-scale water-level altitude contours for the Humboldt River Basin, Nevada as published in the Nevada Department of Conservation and Natural Resources Water Resources Bulletin 32 titled "Hydrologic reconnaissance of the Humboldt River basin, Nevada", 1966.
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This dataset includes the magnetotelluric (MT) sounding data collected in 2007 in and near the San Luis Valley, Colorado. The U.S. Geological Survey conducted a series of multidisciplinary studies, including MT surveys, in the San Luis Valley to improve understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits comprising the principal groundwater aquifers of the Rio Grande rift. The shallow unconfined and the deeper confined Santa Fe Group aquifers in the San Luis Basin are the main sources of municipal water for the region. The population of the San Luis Valley region is growing rapidly and water shortfalls could have serious consequences. Future growth and land management...
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This dataset identifies the number of individually-owned domestic wells, and the number of households relying upon domestic water supply in the state of California. The number of wells and households are summarized for each Public Land Survey System (PLSS) section. The well locations were determined from more than 635,000 scanned well-completion reports (WCRs) provided by the California Department of Water Resources in 2011. This is only a partial sample of the total number of WCRs (estimated at 1 to 2 million in total). The number of domestic wells was estimated based upon a spatially distributed and randomized survey that determined the Township Ratio (TR) for each township in the state (4,692 in total). Each...
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This data set consists of 1:500,000-scale depth-to-water area polygons for the Humboldt River Basin, Nevada as published in the Nevada Department of Conservation and Natural Resources Water Resources Bulletin 32 titled "Hydrologic reconnaissance of the Humboldt River basin, Nevada", 1966.
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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...
Groundwater is an often overlooked freshwater resource compared to surface water, but groundwater is used widely across the United States, especially during periods of drought. If groundwater models can successfully simulate past conditions, they may be used to evaluate potential future pumping scenarios or climate conditions, thus providing a valuable planning tool for water-resource managers. Quantifying the groundwater-use component for a groundwater model is a vital but often challenging endeavor. This dataset includes groundwater withdrawal rates modeled for the Ozark Plateaus aquifer system (Ozark system) from 1900 to 2010 by county for domestic water use. Public supply, non-agriculture, livestock, and agriculture...
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Transient electromagnetic (TEM) soundings were made in the San Luis Valley, Colorado, to map the location of a blue clay unit as well as to investigate the presence of suspected faults. A total of 147 soundings were made near and in Great Sand Dunes National Park and Preserve, and an additional 6 soundings were made near Hansen Bluff on the eastern edge of the Alamosa National Wildlife Refuge. The blue clay is a significant hydrologic feature in the area that separates an unconfined surface aquifer from a deeper confined aquifer. Knowledge of its location is important to regional hydrological models. Previous analysis of well logs has shown that the blue clay has a resistivity of 10 ohm-meters or less, which is...
    map background search result map search result map Location and population served by domestic wells in California 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 aquifer groundwater well point dataset, SIM3348 Ozark aquifer water-level contour dataset, SIM3348 Public supply, non-agriculture, livestock, and agriculture groundwater withdrawal rates from the Ozark Plateaus aquifer system, 1900 to 2010 Domestic groundwater withdrawal rates from the Ozark Plateaus aquifer system, 1900 to 2010 Borehole Locations and Altitudes for each of the Hydrogeologic Units of the Ozark Plateaus Aquifer System Extents for each of the Hydrogeologic Units of the Ozark Plateaus Aquifer System Groundwater-level contours for the Lahontan Valley shallow aquifer near Fallon, Nevada, 2012 Groundwater-level change contours for the Lahontan Valley shallow aquifer near Fallon, Nevada, 1992-2012 Transient Electromagnetic Sounding Data Collected in the San Luis Valley, Colorado near the Great Sand Dunes National Park and Preserve and the Alamosa National Wildlife Refuge (Field Seasons 2007, 2009, and 2011) Magnetotelluric sounding locations, stations 23 to 46, San Luis Valley, Colorado, 2007 Magnetotelluric sounding data, stations 1-9, Taos Plateau Volcanic Field, New Mexico, 2009 1:500,000-scale depth-to-water area polygons for the Humboldt River Basin, Nevada 1:500,000-scale water-level altitude contours for the Humboldt River Basin, Nevada Groundwater discharge areas for the 14 hydrographic areas in the middle Humboldt River Basin, north-central Nevada Evapotranspiration units delineated July 20–24, 2009 in the upper Humboldt River Basin, northeastern Nevada Potential areas of groundwater discharge delineated July 20–24, 2009 in the upper Humboldt River Basin, northeastern Nevada. Magnetotelluric sounding data, stations 1-9, Taos Plateau Volcanic Field, New Mexico, 2009 Transient Electromagnetic Sounding Data Collected in the San Luis Valley, Colorado near the Great Sand Dunes National Park and Preserve and the Alamosa National Wildlife Refuge (Field Seasons 2007, 2009, and 2011) Groundwater-level change contours for the Lahontan Valley shallow aquifer near Fallon, Nevada, 1992-2012 Groundwater-level contours for the Lahontan Valley shallow aquifer near Fallon, Nevada, 2012 Evapotranspiration units delineated July 20–24, 2009 in the upper Humboldt River Basin, northeastern Nevada Potential areas of groundwater discharge delineated July 20–24, 2009 in the upper Humboldt River Basin, northeastern Nevada. Groundwater discharge areas for the 14 hydrographic areas in the middle Humboldt River Basin, north-central Nevada Magnetotelluric sounding locations, stations 23 to 46, San Luis Valley, Colorado, 2007 1:500,000-scale water-level altitude contours for the Humboldt River Basin, Nevada 1:500,000-scale depth-to-water area polygons for the Humboldt River Basin, Nevada 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 aquifer groundwater well point dataset, SIM3348 Ozark aquifer water-level contour dataset, SIM3348 Public supply, non-agriculture, livestock, and agriculture groundwater withdrawal rates from the Ozark Plateaus aquifer system, 1900 to 2010 Domestic groundwater withdrawal rates from the Ozark Plateaus aquifer system, 1900 to 2010 Extents for each of the Hydrogeologic Units of the Ozark Plateaus Aquifer System Borehole Locations and Altitudes for each of the Hydrogeologic Units of the Ozark Plateaus Aquifer System Location and population served by domestic wells in California