Science and Products
Hydraulic Characterization of Aquifers near Long Canyon, Nevada
USGS scientists are characterizing hydraulic connectivity and bulk hydraulic properties of carbonate-rock and basin-fill aquifers in the vicinity of and downgradient from the Long Canyon Mine Project area in Goshute Valley, Nev., to better understand groundwater-flow paths and evaluate pumping effects on the hydrologic system. The Long Canyon Mine Project requires groundwater pumping from the...
Appendixes and Supplemental Data: Hydraulic Characterization of Carbonate-Rock and Basin-Fill Aquifers near Long Canyon, Goshute Valley, Northeastern Nevada, 2011-2016
This USGS data release presents data used to interpret aquifer tests and ultimately characterize the hydraulic properties of carbonate-rock and basin-fill aquifers near Long Canyon, Goshute Valley, northeastern Nevada. The supplemental data consist of 2 child items and 3 attached appendix datasets. The child items are: (1) 2011?2016 Single Well Aquifer Tests: Pumping Schedules, Water-Level Data i
Data Release for The Hydraulic-Parameter Database and Integrated Borehole Analyses, Pahute Mesa and Vicinity, Nevada
This data release consists of a ZIP file that includes: two Excel workbooks, detailed metadata files, and data directories. The Hydraulic Properties Database (HPD; Table-of-AQtests.xlsm) is an interactive Excel workbook that catalogues single-well, aquifer-test results at Pahute Mesa and vicinity. Results from 1,459 single-well, aquifer-test analyses are uniquely identified to 360 tested wells. Th
Supplemental data from: A Process to Estimate Net Infiltration using a Site-Scale Water-Budget Approach, Rainier Mesa, Nevada National Security Site, 2002-05
This USGS data release represents tabular data for a process to estimate net infiltration using a site-scale water-budget approach, Rainier Mesa, Nevada National Security Site, 2002-05. This dataset consists of the following: (1) Measured and corrected precipitation data from A12 weather station, Rainier Mesa, Nevada National Security Site, July 1, 2002 to June 30, 2005. (2) Inventory of net radia
Filter Total Items: 63
Hydraulic characterization of volcanic rocks in Pahute Mesa using an integrated analysis of 16 multiple-well aquifer tests, Nevada National Security Site, 2009–14
An improved understanding of groundwater flow and radionuclide migration downgradient from underground nuclear-testing areas at Pahute Mesa, Nevada National Security Site, requires accurate subsurface hydraulic characterization. To improve conceptual models of flow and transport in the complex hydrogeologic system beneath Pahute Mesa, the U.S. Geological Survey characterized bulk hydraulic propert
Testing the suitability of geologic frameworks for extrapolating hydraulic properties across regional scales
The suitability of geologic frameworks for extrapolating hydraulic conductivity (K) to length scales commensurate with hydraulic data is difficult to assess. A novel method is presented for evaluating assumed relations between K and geologic interpretations for regional-scale groundwater modeling. The approach relies on simultaneous interpretation of multiple aquifer tests using alternative geolog
T-COMP—A suite of programs for extracting transmissivity from MODFLOW models
Simulated transmissivities are constrained poorly by assigning permissible ranges of hydraulic conductivities from aquifer-test results to hydrogeologic units in groundwater-flow models. These wide ranges are derived from interpretations of many aquifer tests that are categorized by hydrogeologic unit. Uncertainty is added where contributing thicknesses differ between field estimates and numerical
Delineation of the Pahute Mesa–Oasis Valley groundwater basin, Nevada
This report delineates the Pahute Mesa–Oasis Valley (PMOV) groundwater basin, where recharge occurs, moves downgradient, and discharges to Oasis Valley, Nevada. About 5,900 acre-feet of water discharges annually from Oasis Valley, an area of springs and seeps near the town of Beatty in southern Nevada. Radionuclides in groundwater beneath Pahute Mesa, an area of historical underground nuclear test
Evaluating connection of aquifers to springs and streams, Great Basin National Park and vicinity, Nevada
Federal agencies that oversee land management for much of the Snake Range in eastern Nevada, including the management of Great Basin National Park by the National Park Service, need to understand the potential extent of adverse effects to federally managed lands from nearby groundwater development. As a result, this study was developed (1) to attain a better understanding of aquifers controlling g
The source, discharge, and chemical characteristics of water from Agua Caliente Spring, Palm Springs, California
Agua Caliente Spring, in downtown Palm Springs, California, has been used for recreation and medicinal therapy for hundreds of years and currently (2008) is the source of hot water for the Spa Resort owned by the Agua Caliente Band of the Cahuilla Indians. The Agua Caliente Spring is located about 1,500 feet east of the eastern front of the San Jacinto Mountains on the southeast-sloping alluvial p
Assessing hydraulic connections across a complex sequence of volcanic rocks - Analysis of U-20 WW multiple-well aquifer test, Pahute Mesa, Nevada National Security Site, Nevada
Groundwater beneath Pahute Mesa flows through a complexly layered sequence of volcanic rock aquifers and confining units that have been faulted into distinct structural blocks. Hydraulic property estimates of rocks and structures in this flow system are necessary to assess radionuclide migration near underground nuclear testing areas. The U.S. Geological Survey (USGS) used a 12 month (October 1, 2
Potential effects of groundwater pumping on water levels, phreatophytes, and spring discharges in Spring and Snake Valleys, White Pine County, Nevada, and adjacent areas in Nevada and Utah
Assessing hydrologic effects of developing groundwater supplies in Snake Valley required numerical, groundwater-flow models to estimate the timing and magnitude of capture from streams, springs, wetlands, and phreatophytes. Estimating general water-table decline also required groundwater simulation. The hydraulic conductivity of basin fill and transmissivity of basement-rock distributions in Sprin
Arsenic management through well modification and simulation
Arsenic concentrations can be managed with a relatively simple strategy of grouting instead of completely destroying a selected interval of well. The strategy of selective grouting was investigated in Antelope Valley, California, where groundwater supplies most of the water demand. Naturally occurring arsenic typically exceeds concentrations of 10 (mu or u)g/L in the water produced from these long
Interpretation of Flow Logs from Nevada Test Site Boreholes to Estimate Hydraulic Conductivity Using Numerical Simulations Constrained by Single-Well Aquifer Tests
Hydraulic conductivities of volcanic and carbonate lithologic units at the Nevada Test Site were estimated from flow logs and aquifer-test data. Borehole flow and drawdown were integrated and interpreted using a radial, axisymmetric flow model, AnalyzeHOLE. This integrated approach is used because complex well completions and heterogeneous aquifers and confining units produce vertical flow in the
Revised multi-node well (MNW2) package for MODFLOW ground-water flow model
Wells that are open to multiple aquifers can provide preferential pathways to flow and solute transport that short-circuit normal fluid flowlines. Representing these features in a regional flow model can produce a more realistic and reliable simulation model. This report describes modifications to the Multi-Node Well (MNW) Package of the U.S. Geological Survey (USGS) three-dimensional ground-water
Permeameter data verify new turbulence process for MODFLOW
A sample of Key Largo Limestone from southern Florida exhibited turbulent flow behavior along three orthogonal axes as reported in recently published permeameter experiments. The limestone sample was a cube measuring 0.2 m on edge. The published nonlinear relation between hydraulic gradient and discharge was simulated using the turbulent flow approximation applied in the Conduit Flow Process (CFP)
AnalyzeHOLE
AnalyzeHOLE, an integrated wellbore analysis tool for simulating flow and transport in wells and aquifer systems, provides a better alternative for simulating and evaluating complex well-aquifer system interaction.
SeriesSEE
SeriesSEE is a spreadsheet add-in for viewing time series and modeling water levels that was developed in Microsoft Excel 2010.
FLASH: A Computer Program for Flow-Log Analysis of Single Holes
FLASH (Flow-Log Analysis of Single Holes) is a computer program for the analysis of borehole vertical flow logs.
Science and Products
- Science
Hydraulic Characterization of Aquifers near Long Canyon, Nevada
USGS scientists are characterizing hydraulic connectivity and bulk hydraulic properties of carbonate-rock and basin-fill aquifers in the vicinity of and downgradient from the Long Canyon Mine Project area in Goshute Valley, Nev., to better understand groundwater-flow paths and evaluate pumping effects on the hydrologic system. The Long Canyon Mine Project requires groundwater pumping from the... - Data
Appendixes and Supplemental Data: Hydraulic Characterization of Carbonate-Rock and Basin-Fill Aquifers near Long Canyon, Goshute Valley, Northeastern Nevada, 2011-2016
This USGS data release presents data used to interpret aquifer tests and ultimately characterize the hydraulic properties of carbonate-rock and basin-fill aquifers near Long Canyon, Goshute Valley, northeastern Nevada. The supplemental data consist of 2 child items and 3 attached appendix datasets. The child items are: (1) 2011?2016 Single Well Aquifer Tests: Pumping Schedules, Water-Level Data iData Release for The Hydraulic-Parameter Database and Integrated Borehole Analyses, Pahute Mesa and Vicinity, Nevada
This data release consists of a ZIP file that includes: two Excel workbooks, detailed metadata files, and data directories. The Hydraulic Properties Database (HPD; Table-of-AQtests.xlsm) is an interactive Excel workbook that catalogues single-well, aquifer-test results at Pahute Mesa and vicinity. Results from 1,459 single-well, aquifer-test analyses are uniquely identified to 360 tested wells. ThSupplemental data from: A Process to Estimate Net Infiltration using a Site-Scale Water-Budget Approach, Rainier Mesa, Nevada National Security Site, 2002-05
This USGS data release represents tabular data for a process to estimate net infiltration using a site-scale water-budget approach, Rainier Mesa, Nevada National Security Site, 2002-05. This dataset consists of the following: (1) Measured and corrected precipitation data from A12 weather station, Rainier Mesa, Nevada National Security Site, July 1, 2002 to June 30, 2005. (2) Inventory of net radia - Publications
Filter Total Items: 63
Hydraulic characterization of volcanic rocks in Pahute Mesa using an integrated analysis of 16 multiple-well aquifer tests, Nevada National Security Site, 2009–14
An improved understanding of groundwater flow and radionuclide migration downgradient from underground nuclear-testing areas at Pahute Mesa, Nevada National Security Site, requires accurate subsurface hydraulic characterization. To improve conceptual models of flow and transport in the complex hydrogeologic system beneath Pahute Mesa, the U.S. Geological Survey characterized bulk hydraulic propertTesting the suitability of geologic frameworks for extrapolating hydraulic properties across regional scales
The suitability of geologic frameworks for extrapolating hydraulic conductivity (K) to length scales commensurate with hydraulic data is difficult to assess. A novel method is presented for evaluating assumed relations between K and geologic interpretations for regional-scale groundwater modeling. The approach relies on simultaneous interpretation of multiple aquifer tests using alternative geologT-COMP—A suite of programs for extracting transmissivity from MODFLOW models
Simulated transmissivities are constrained poorly by assigning permissible ranges of hydraulic conductivities from aquifer-test results to hydrogeologic units in groundwater-flow models. These wide ranges are derived from interpretations of many aquifer tests that are categorized by hydrogeologic unit. Uncertainty is added where contributing thicknesses differ between field estimates and numericalDelineation of the Pahute Mesa–Oasis Valley groundwater basin, Nevada
This report delineates the Pahute Mesa–Oasis Valley (PMOV) groundwater basin, where recharge occurs, moves downgradient, and discharges to Oasis Valley, Nevada. About 5,900 acre-feet of water discharges annually from Oasis Valley, an area of springs and seeps near the town of Beatty in southern Nevada. Radionuclides in groundwater beneath Pahute Mesa, an area of historical underground nuclear testEvaluating connection of aquifers to springs and streams, Great Basin National Park and vicinity, Nevada
Federal agencies that oversee land management for much of the Snake Range in eastern Nevada, including the management of Great Basin National Park by the National Park Service, need to understand the potential extent of adverse effects to federally managed lands from nearby groundwater development. As a result, this study was developed (1) to attain a better understanding of aquifers controlling gThe source, discharge, and chemical characteristics of water from Agua Caliente Spring, Palm Springs, California
Agua Caliente Spring, in downtown Palm Springs, California, has been used for recreation and medicinal therapy for hundreds of years and currently (2008) is the source of hot water for the Spa Resort owned by the Agua Caliente Band of the Cahuilla Indians. The Agua Caliente Spring is located about 1,500 feet east of the eastern front of the San Jacinto Mountains on the southeast-sloping alluvial pAssessing hydraulic connections across a complex sequence of volcanic rocks - Analysis of U-20 WW multiple-well aquifer test, Pahute Mesa, Nevada National Security Site, Nevada
Groundwater beneath Pahute Mesa flows through a complexly layered sequence of volcanic rock aquifers and confining units that have been faulted into distinct structural blocks. Hydraulic property estimates of rocks and structures in this flow system are necessary to assess radionuclide migration near underground nuclear testing areas. The U.S. Geological Survey (USGS) used a 12 month (October 1, 2Potential effects of groundwater pumping on water levels, phreatophytes, and spring discharges in Spring and Snake Valleys, White Pine County, Nevada, and adjacent areas in Nevada and Utah
Assessing hydrologic effects of developing groundwater supplies in Snake Valley required numerical, groundwater-flow models to estimate the timing and magnitude of capture from streams, springs, wetlands, and phreatophytes. Estimating general water-table decline also required groundwater simulation. The hydraulic conductivity of basin fill and transmissivity of basement-rock distributions in SprinArsenic management through well modification and simulation
Arsenic concentrations can be managed with a relatively simple strategy of grouting instead of completely destroying a selected interval of well. The strategy of selective grouting was investigated in Antelope Valley, California, where groundwater supplies most of the water demand. Naturally occurring arsenic typically exceeds concentrations of 10 (mu or u)g/L in the water produced from these longInterpretation of Flow Logs from Nevada Test Site Boreholes to Estimate Hydraulic Conductivity Using Numerical Simulations Constrained by Single-Well Aquifer Tests
Hydraulic conductivities of volcanic and carbonate lithologic units at the Nevada Test Site were estimated from flow logs and aquifer-test data. Borehole flow and drawdown were integrated and interpreted using a radial, axisymmetric flow model, AnalyzeHOLE. This integrated approach is used because complex well completions and heterogeneous aquifers and confining units produce vertical flow in theRevised multi-node well (MNW2) package for MODFLOW ground-water flow model
Wells that are open to multiple aquifers can provide preferential pathways to flow and solute transport that short-circuit normal fluid flowlines. Representing these features in a regional flow model can produce a more realistic and reliable simulation model. This report describes modifications to the Multi-Node Well (MNW) Package of the U.S. Geological Survey (USGS) three-dimensional ground-waterPermeameter data verify new turbulence process for MODFLOW
A sample of Key Largo Limestone from southern Florida exhibited turbulent flow behavior along three orthogonal axes as reported in recently published permeameter experiments. The limestone sample was a cube measuring 0.2 m on edge. The published nonlinear relation between hydraulic gradient and discharge was simulated using the turbulent flow approximation applied in the Conduit Flow Process (CFP) - Software
AnalyzeHOLE
AnalyzeHOLE, an integrated wellbore analysis tool for simulating flow and transport in wells and aquifer systems, provides a better alternative for simulating and evaluating complex well-aquifer system interaction.
SeriesSEE
SeriesSEE is a spreadsheet add-in for viewing time series and modeling water levels that was developed in Microsoft Excel 2010.
FLASH: A Computer Program for Flow-Log Analysis of Single Holes
FLASH (Flow-Log Analysis of Single Holes) is a computer program for the analysis of borehole vertical flow logs.