Filters: Tags: San Joaquin Valley (X)
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These data encompass data classified from the borehole textures. The U.S Geological Survey (USGS) classified the Well Log Database of the Central Valley, California, 2021, into Central_Valley_Borehole_with_Lithology_Classification.csv. Lithologic log descriptions served as the basis for division into discrete binary texture classifications of either “coarse grained” or “fine grained” intervals. Values of 1 (coarse grained), 0 (fine grained) or 2 (unknown) were determined using the table found in Central_Valley_Lithology_Classifier.csv. Percent Coarse values for each well log were calculated at 15.24 m for the entire Central valley (Percent_Coarse_meters_wells.csv).
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset defines the SUB package arrays for the model grid, critical head, thickness of fine-grained deposits, and skeletal-elastic-storage used in the transient hydrologic model of the Central Valley flow system. The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the USGS numerical modeling code MODFLOW-FMP...
Categories: pre-SM502.8;
Tags: Alameda County,
Amador County,
Butte County,
CV-RASA,
Calaveras County,
This data release contains deep seismic reflection profiles CC-1 and CC-2, which extend eastward from within the California Coast Ranges across the Great Valley and into the Sierran foothills, with a combined east-west length of about 140 km at about the latitude of the town of Merced (37.25° north latitude). The records are processed to 15 seconds two-way time and thus extend deep into the lithosphere as well as capturing detail in the shallow crust. Field data (no longer available) were collected in 1982-85 with vibrator source, an 800-channel, split-spread receiver array using SIGN-BIT technology, and a maximum offset of 12.2 km. Line CC-1 extends from Franciscan Complex of the eastern Coast Ranges east to Merced...
Airborne electromagnetic (AEM) and magnetic survey data were collected during October 2016 over a total of distance of 262 line kilometers in the southeastern San Joaquin Valley near Cawelo, California. These data were collected in support of groundwater salinity mapping and hydrogeologic framework development as part of the U.S. Geological Survey California Oil, Gas, and Groundwater program and the California State Water Resources Control Board’s Oil and Gas Regional Monitoring Program. Deterministic spatially constrained inversions of the processed AEM data were conducted using the AarhusINV code (Auken and others, 2014) implemented in Aarhus Workbench software (Aarhus Geosoftware, Aarhus, Denmark). Inversion...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: CAWSC,
California,
California Water Science Center,
Cawelo,
GGGSC,
This model has been superseded by an updated version of the model. The new model can be found at: https://doi.org/10.5066/P99KJ1U1, https://doi.org/10.5066/P9FTZ5RW, https://doi.org/10.5066/P9NBWLYX, https://doi.org/10.5066/P97XBULI, https://doi.org/10.5066/P980EHWV, https://doi.org/10.5066/P95XLBB5, https://doi.org/10.5066/P9ICSZWF, https://doi.org/10.5066/P96LJ01V, and https://doi.org/10.5066/P9IZRO3V. A three-dimensional groundwater flow model (MODFLOW200-FMP1_1) of the Central Valley in California was developed to aid water managers in understanding how water moves through the aquifer system, to predict water-supply scenarios, and to address issues related to water competition. The USGS Groundwater Resources...
Categories: pre-SM502.8;
Tags: California,
Central Valley,
Corcoran Clay,
Groundwater,
Groundwater Model,
The recency of large-scale land conversion in California’s San Joaquin Desert raises the probability that the region’s numerous endemic species still retain genetic signatures of historical population connectivity. If so, genomic data can serve as a guidance tool for conserving lands that once supported habitat for gene movement. We studied the genetic structuring of the endangered blunt-nosed leopard lizard Gambelia sila, a San Joaquin Desert endemic, to (1) test whether patterns of population admixture could be used to delimit former habitat corridors in the pre-converted landscape, (2) evaluate whether restriction site associated DNA sequencing (RADseq) from a subset of samples can resolve structure at the same...
Types: Citation;
Tags: California,
Carrizo Plain,
Cuyama River Watershed,
Gambelia sila,
Panoche Plateau,
Location information regarding samples taken for each individual.
Categories: Data;
Types: Citation;
Tags: California,
Carrizo Plain,
Cuyama River Watershed,
Gambelia sila,
Panoche Plateau,
Location information regarding samples taken for each individual. This data sheet is to be used in conjunction with the 'Convert' file.
Categories: Data;
Types: Citation;
Tags: California,
Carrizo Plain,
Cuyama River Watershed,
Gambelia sila,
Panoche Plateau,
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset contains the monthly inflows to the surface-water network for the Central Valley Hydrologic Model (CVHM). The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the USGS numerical modeling code MODFLOW-FMP (Schmid and others, 2006). This simulation is referred to here as the CVHM (Faunt, 2009). Utilizing...
Categories: pre-SM502.8;
Tags: Alameda County,
Amador County,
Butte County,
CV-RASA,
Calaveras County,
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset defines the well locations for hydraulic-head observations used in the calibration of the transient hydrologic model of the Central Valley flow system. The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the USGSs numerical modeling code MODFLOW-FMP (Schmid and others, 2006). This application is referred...
Categories: pre-SM502.8;
Tags: Alameda County,
Amador County,
Butte County,
CV-RASA,
Calaveras County,
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset contains the compaction data for 24 extensometers used for observations in the Central Valley Hydrologic Model (CVHM). The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the USGS numerical modeling code MODFLOW-FMP (Schmid and others, 2006). This simulation is referred to here as the CVHM (Faunt, 2009)....
Categories: pre-SM502.8;
Tags: Alameda County,
Amador County,
Butte County,
CV-RASA,
Calaveras County,
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset represents the area where lateral flow into and out of the Central Valley groundwater-flow system occurs. The General Head Boundary (GHB) is set to 0 and is only in the Delta and is specified in layer 1 where the groundwater system intersects the surface water system. The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley...
Categories: pre-SM502.8;
Tags: Alameda County,
Amador County,
Butte County,
CV-RASA,
Calaveras County,
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset defines the well locations, perforated intervals, and time series of hydraulic-head observations used in the calibration of the transient hydrologic model of the Central Valley flow system. The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the U.S. Geological Survey (USGS) numerical modeling code MODFLOW-FMP...
Categories: pre-SM502.8;
Tags: Alameda County,
Amador County,
Butte County,
CV-RASA,
Calaveras County,
This dataset contains summarized historical groundwater salinity observations from wells near the Lost Hills and Belridge oil fields in the southwestern San Joaquin Valley, Kern County, California. Total dissolved solids (TDS) concentration, electrical fluid conductivity (EC), and well construction information were aggregated from public data sources and local water management agencies. Trends in total-dissolved solids (TDS) concentrations and fluid conductivity were assessed on a well-by-well basis to develop a dataset of salinity observations to support the interpretation of resistivity data derived from an airborne electromagnetic (AEM) survey flown in October 2016. Results of the trend analysis were used to...
Categories: Data;
Tags: CAWSC,
California,
California Oil Gas and Groundwater project,
California Water Science Center,
Energy Resources,
Groundwater arsenic concentrations in the San Joaquin Valley have varied over the decades from 1980 to 2019. This report was compiled to determine whether arsenic concentrations are increasing or decreasing and the mechanism controlling the trends. The San Joaquin Valley contains 4,979 wells with arsenic analyses and possible co-detections of any of the following constituents: dissolved oxygen, field-measured pH, iron, manganese, sulfate, nitrate, or water level. Water quality data comes from two sources: 3,302 wells from with California State Water Resources Control Board - Division of Drinking Water and 1,448 wells from the U.S. Geological Survey National Water Information System (California State Water Resources...
Categories: Data;
Tags: California,
GAMA,
Groundwater Ambient Monitoring and Assessment,
San Joaquin Valley,
San Joaquin basin,
These data encompass the geologic framework model for the Central Valley Hydrologic Model Version 2 (CVHM2) study. This includes (1) the Well Log Database which contains borehole information and lithology used in creating the geologic framework, (2) Well Logs with Classification Information which explains how percent coarse values were determined for each borehole, and (3) the Three-Dimensional Framework Model.
This digital dataset contains the monthly inflows to the surface water network in the updated Central Valley Hydrologic Model (CVHM2) for water years 1922-2019. The surface water inflows are simulated through the Streamflow Routing Package (SFR2) using 65 inflows locations, 271 stream segments that represent 4043 stream reaches, and 13 bifurcations that comprise the stream network. The bifurcations simulate the bypass canals that are used for flood control by routing water between two stream reach locations within the stream network. This dataset includes the inflow and bifurcation locations, monthly magnitude, and shapefiles of the gridded and non-gridded stream network.
This digital dataset contains the monthly diversions from the surface water network in the updated Central Valley Hydrologic Model (CVHM2) for water years 1922-2019. The volume of water transported by surface-water diversions were updated in the CVHM2 from several sources, including: • The C2VSIM developed by DWR, • The WestSIM model, • Delta Mendota Canal turnout delivery data obtained from SLDMWA, • Delta delivery data obtained from Montgomery Watson. The surface water diversions are simulated through the Streamflow Routing Package (SFR2) using 571 diversion locations providing 564 semi-routed and 7 non-routed diversions. Linkages between SFR2 and the Farm-Process (FMP4) simulate the semi-routed and non-routed...
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