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A three-dimensional groundwater flow model using MODFLOW-NWT was developed to evaluate historical and potential stream capture in the lower Humboldt River Basin, Nevada. The Humboldt River Basin is the only river basin that is contained entirely within the state of Nevada. The effect of groundwater pumping on the Humboldt River is not well understood. Tools are needed to determine stream capture and manage groundwater pumping in the Humboldt River Basin. Previous work has demonstrated that the river’s surface-water resource is sensitive to groundwater withdrawals, which have steadily increased since the 1950s for agriculture, municipal, and mining uses. A numerical groundwater flow model was developed for the purpose...
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This dataset consists of points representing selected well site locations and water-level measurements used by Lopes and Allander (2009) to develop autumn 2006 groundwater-level altitude contours for Smith and Mason Valleys, and the lower Walker River basin, Nevada. Since the publication of Lopes and Allander (2009), the positional coordinates and land-surface altitudes at selected well sites used to develop autumn 2006 groundwater-level contours in that report were updated as part of a 2022 U.S. Geological Survey study (Davies and Naranjo, 2022).
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This dataset consists of a polyline representing a groundwater divide for spring 1972, Smith Valley, Nevada digitized from plate 2 of the 1976 publication: Rush, F.E.,and Schroer, C.V., 1976, Geohydrology of Smith Valley, Nevada with special reference to the water-use period 1953-72: Nevada Department of Conservation and Natural Resources Water Resources Bulletin 43, 43p.
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These contours represent static groundwater levels based on depth-to-water measurements made at 165 monitoring wells during water years 2016-2020 in Smith Valley and Mason Valley, Nevada. For each monitoring well, the median groundwater-level altitude during the five-year period (2016-2020) was used for developing the groundwater-level contours. Depth-to-water measurements were collected by the USGS and the Nevada Division of Water Resources (NDWR).
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This tabular dataset is compiled monthly surface-water discharge data from four USGS gages in the Walker River Basin, Nevada, in acre-feet (USGS, 2021), and calculated stream efficiency using monthly streamflow discharge data and monthly surface-water diversion data, unitless, for water years 1948-2020. USGS gages include: West Walker River at Hoye Bridge near Wellington (10297500), West Walker River near Hudson (10300000), East Walker River above Strosnider Ditch near Mason (10293500), and Walker River near Wabuska (10301500). USGS streamflow discharge data is provided in this data release in acre-feet for convenience to the reader.
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This dataset consists of polylines representing groundwater-level altitude contours for spring 1972, Smith Valley, Nevada, digitized from plate 2 of the 1976 publication: Rush, F.E.,and Schroer, C.V., 1976, Geohydrology of Smith Valley, Nevada with special reference to the water-use period 1953-72: Nevada Department of Conservation and Natural Resources Water Resources Bulletin 43, 43p.
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This USGS data release consists of polygons representing Gumboot Lake extents from the report Effects of ground-water development on the water regimen of Paradise Valley, Humboldt County, Nevada, 1949-1968 and Hydrologic Reconnaissance of the Tributary Areas (Nevada Department of Conservation and Natural Resources Water Resources Bulletin 39). There are two datasets containing four different extents. The first dataset contains the approximate maximum extent Gumboot Lake extent as published on plate 1 of Bulletin 39. The second data set contains three approximate elevation-derived extents based on observations published in Bulletin 39: 1) based on 1952-1953 estimated lake elevation of 4,320 feet, 2) based on the...
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This USGS data release presents tabular data and photos used to determine (1) the duration of flow, subsurface temperature, and concurrent infiltration along an ephemeral channel and (2) vertical change of soil moisture, texture, and pore-water chemistry in the unsaturated zone at selected locations. The data were collected to investigate the feasibility of managed aquifer recharge (MAR) for aquifer storage and recovery in Bedell Flat hydrographic area, Nevada. The supplemental data consist of 4 tabular datasets and time-lapse photographs of discharge events. Data in this release include: (1) Bird Springs channel site location information (tabular data), (2) Bird Springs channel stream stage and subsurface temperature...
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This data release consists of a Microsoft® Access database and Microsoft® Excel workbook that contain water-level data and other hydrologic information for wells in and near areas of underground nuclear testing at the Nevada Test Site (currently called the Nevada National Security Site). The database provides information for each well (well construction, borehole lithology, units contributing water to the well, and general site remarks) and associated water-level measurements (measurement source, status, method, accuracy, and specific water-level remarks). Additionally, the database provides hydrograph descriptions that document the water-level history and describe and interpret the water-level hydrograph for each...
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This U.S. Geological Survey data release contains data for Smith Valley, Nevada, digitized from plate 2 of the 1976 publication: Rush, F.E.,and Schroer, C.V., 1976, Geohydrology of Smith Valley, Nevada with special reference to the water-use period 1953-72: Nevada Department of Conservation and Natural Resources Water Resources Bulletin 43, 43p. Data are for spring 1972 and include groundwater-level contours and a groundwater divide polyline.
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This USGS data release, supporting USGS Scientific Investigations Report 2020-5075, Estimates of Groundwater Discharge by Evapotranspiration, Stump Spring and Hiko Springs, Clark County, Southern Nevada, 2016–18, consists of five datasets - Normalized Difference Vegetation Indexes (NDVI) and a mapped groundwater discharge areas (GDA) for two spring areas, and a two-class land cover classification for Stump Springs and the Area of Critical Environmental Concern (ACEC) adjacent to Stump Springs. The mapped GDAs are the area within each spring’s riparian area where discharge from evaporation by open water or bare soil and transpiration from phreatophytic plants exceeds the volume of water contributed by precipitation....
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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 in Aquifer Test Wells, and Analysis Results from Tests Conducted near Long Canyon, Goshute Valley, Northeastern Nevada, (tabular datasets, pdfs, and Excel workbooks), and (2) 2016 Carbonate-Rock Aquifer Test Data: Pumping Schedules, Water-Levels, Weather Data, Water-Level Models, and Hydrographs showing Drawdown and Rise...
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A three-dimensional MODFLOW-NWT groundwater flow model was developed to evaluate the impacts of alternative water management scenarios on the groundwater resources of Eagle, Dayton, and Churchill Valleys, Nevada. In addition, the resulting impact on flows in the Carson River and Lahontan Reservoir are also evaluated. During the economic boom that occurred from 2004-2006 in northwestern Nevada, municipal and housing growth increased stress on the limited water resources of this semi-arid region. In 2008, when the economy slowed, new housing development stopped, and immediate pressure on finite groundwater resources abated. In anticipation of economic recovery and resumed growth, however, the U.S. Geological Survey...
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This USGS data release presents tabular data and a model archive used to estimate seepage rates at 19 locations on the Truckee Canal for the 2018 and 2019 irrigation seasons. This supplemental data release consists of two child items: (1) Model archive of two-dimensional variably saturated heat and flow models (VS2DH) used to examine seepage rates in the Truckee Canal at 19 transect locations (model archive), and (2) ​Tabular data of site locations, sediment and water temperature, and canal head or stage in the Truckee Canal (tabular data).
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This polygon vector dataset represents over 18,000 derived watersheds associated with meadows listed in the Sierra Nevada Meadows Compilation (version 2.0). The watershed polygons are attributed with geology, landform, and fire recurrence interval departure information thought to potentially influence the hydrology of meadows.
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A proof-of-concept MODFLOW 6 groundwater model was developed to represent the bedrock, delta, and alluvially-deposited aquifers underlying the Mekong River Basin approximately between Phnom Penh, Cambodia and Cao Lanh, Vietnam. The model was constructed using square grid cells measuring 2,200 meters on each side. The proof-of-concept groundwater model was used to simulate environmental baseline conditions, representative of a 20-year period with stresses from November 1990 through October 2010. Additionally, a 20-year period of drier conditions with sea-level rise was also simulated that approximates the Mekong River Commission C3 climate scenario (drier climate with sea level rise; Mekong River Commission, 2019)....
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This U.S. Geological Survey (USGS) data release consists of data from two tracer investigations in the Snake Creek drainage of Great Basin National Park, White Pine County, Nevada. The first investigation, occurring from April to September 2019, involved injecting a fluorescein dye tracer below a diversion point in Snake Creek and monitoring 13 sites in the Snake Creek and neighboring Big Wash drainages for presence of the dye. The results of the first investigation were used to select a targeted monitoring location for a second, quantitative investigation. The second investigation, occurring from September 2020 to March 2021, involved injecting two tracers, sodium bromide and fluorescein dye, below the same diversion...
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This raster dataset represents groundwater-level change from 1970 to 2020 in Smith Valley and Mason Valley, Nevada, calculated using approach 2. For this approach, depth-to-water measurements from 53 monitoring wells, represented as point values, were differenced between 1970 and 2020. Point values of change were interpolated into a raster to calculate valley-wide groundwater-level change. Depth-to-water was measured at the same 53 wells in 1995, 2006, and 2020. Depth-to-water measurements for 1970 were calculated by interpolating groundwater-level contours and extracting point values at the monitoring well locations. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level...
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This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The three related pour point locations, each delivered in a stand-alone dataset, are: "from" (fpp) and "to" (tpp) points that identify the location where flow leaves the HU12 polygon based on a flow direction raster, and a third "vector pour point" (vpp) selected "upstream" used to identify flow confluences near the "from" and "to" pour point locations. The points are derived from the NHDPlus V2.1 flow direction rasters and the WBD snapshot delivered with NHDPlus V2.1. This metadata document describes the "vector" pourpoints (vpp).
map background search result map search result map 12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot: "vector" pour points (vpp) Watersheds and Select Landscape Attributes for Meadows in the Sierra Nevada, California Geospatial Data to Support Estimates of Annual Groundwater Discharge by Evapotranspiration from Areas of Spring-Fed Riparian Vegetation, Stump Spring and Hiko Springs, Clark County, southern Nevada Supplemental Data: Surface Infiltration and Unsaturated Zone Characterization in Support of Managed Aquifer Recharge in Bedell Flat, Washoe County, Nevada Geospatial data for Gumboot Lake extents from the report Effects of ground-water development on the water regimen of Paradise Valley, Humboldt County, Nevada, 1949-1968 and Hydrologic Reconnaissance of the Tributary Areas Database of Groundwater Levels and Hydrograph Descriptions for the Nevada Test Site Area, Nye County, Nevada (ver. 4.0, February 2021) Appendixes and Supplemental Data: Hydraulic Characterization of Carbonate-Rock and Basin-Fill Aquifers near Long Canyon, Goshute Valley, Northeastern Nevada, 2011-2016 04) Groundwater-level contours for Smith Valley and Mason Valley, Nevada, 2020 Supplemental data and documentation of VS2DH seepage models: Incorporating temperature into seepage loss estimates for a large irrigation canal 12) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-2020, approach 2 Data for the 1976 report Geohydrology of Smith Valley, Nevada, with special reference to the water-use period 1953-72 Selected well sites used to develop water-table altitude contours in Smith Valley, Mason Valley, and Lower Walker River Basin, Nevada, Autumn 2006 1:24,000-scale hydrographic areas, Walker River Basin, California and Nevada Groundwater-level altitude contours, spring 1972, Smith Valley, Nevada Groundwater divide line, spring 1972, Smith Valley, Nevada 17) Streamflow discharge and stream efficiency for the East Walker, West Walker, and Walker Rivers in Smith and Mason Valleys, Nevada, 1948-2020 Data from two tracer investigations in the Snake Creek drainage, Great Basin National Park, White Pine County, Nevada MODFLOW 6 proof-of-concept groundwater model for the Mekong River Basin between Phnom Penh, Cambodia and Cao Lanh, Vietnam MODFLOW-NWT model used to simulate Potential Effects of Changes in Water Use in the Middle Carson River Basin for Eagle, Dayton, and Churchill Valleys, West-Central, Nevada MODFLOW-NWT Model Used to Evaluate Stream Capture Related to Groundwater Pumping, Lower Humboldt River Basin, Nevada (ver. 1.1, March 2024) Supplemental Data: Surface Infiltration and Unsaturated Zone Characterization in Support of Managed Aquifer Recharge in Bedell Flat, Washoe County, Nevada Groundwater divide line, spring 1972, Smith Valley, Nevada Geospatial data for Gumboot Lake extents from the report Effects of ground-water development on the water regimen of Paradise Valley, Humboldt County, Nevada, 1949-1968 and Hydrologic Reconnaissance of the Tributary Areas Data for the 1976 report Geohydrology of Smith Valley, Nevada, with special reference to the water-use period 1953-72 Groundwater-level altitude contours, spring 1972, Smith Valley, Nevada Data from two tracer investigations in the Snake Creek drainage, Great Basin National Park, White Pine County, Nevada Supplemental data and documentation of VS2DH seepage models: Incorporating temperature into seepage loss estimates for a large irrigation canal MODFLOW-NWT model used to simulate Potential Effects of Changes in Water Use in the Middle Carson River Basin for Eagle, Dayton, and Churchill Valleys, West-Central, Nevada MODFLOW-NWT Model Used to Evaluate Stream Capture Related to Groundwater Pumping, Lower Humboldt River Basin, Nevada (ver. 1.1, March 2024) Selected well sites used to develop water-table altitude contours in Smith Valley, Mason Valley, and Lower Walker River Basin, Nevada, Autumn 2006 Geospatial Data to Support Estimates of Annual Groundwater Discharge by Evapotranspiration from Areas of Spring-Fed Riparian Vegetation, Stump Spring and Hiko Springs, Clark County, southern Nevada Appendixes and Supplemental Data: Hydraulic Characterization of Carbonate-Rock and Basin-Fill Aquifers near Long Canyon, Goshute Valley, Northeastern Nevada, 2011-2016 Database of Groundwater Levels and Hydrograph Descriptions for the Nevada Test Site Area, Nye County, Nevada (ver. 4.0, February 2021) 1:24,000-scale hydrographic areas, Walker River Basin, California and Nevada MODFLOW 6 proof-of-concept groundwater model for the Mekong River Basin between Phnom Penh, Cambodia and Cao Lanh, Vietnam Watersheds and Select Landscape Attributes for Meadows in the Sierra Nevada, California 12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot: "vector" pour points (vpp)