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Data

Providing current data for analysis, forecasting, and research

Providing current data for analysis, forecasting, and research

Basic hydrologic data collection, processing, analysis, dissemination, and archiving are major parts of the California Water Science Center program. Streamflow data, for example, are used for flood and water-supply forecasts, planning and design, river regulation, streamflow statistics, and research investigations. Much of the data are available on a near-real-time basis by satellite telemetry.

California Water Dashboard

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View California's real-time stream, lake, reservoir, precipitation, water quality, and groundwater stations in context with current weather and hazard conditions.

Current Conditions

California Groundwater Quality

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This interactive webmap plots water-quality data from domestic and public-supply wells sampled by the USGS for the California GAMA Priority Basin Project, and allows users to download datasets.

Water Quality Data

California Water Data

Filter Total Items: 253

Lower Salinas Valley Hydrologic Models: Climate Data Lower Salinas Valley Hydrologic Models: Climate Data

This digital dataset contains the climate data used for the Lower Salinas Valley Hydrologic Models (Salinas Valley Integrated Hydrologic Model (SVIHM) and Salinas Valley Operational Model (SVOM)). The monthly climate data for the Lower Salinas Valley Hydrologic Models are based on the regional climate data for the Salinas Valley Hydrologic System [Hevesi and others, 2022]. To develop the...
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California Water Science Center

Los Angeles Basin Watershed Model (LABWM) using INFIL4.0 Los Angeles Basin Watershed Model (LABWM) using INFIL4.0

This data release documents the datasets and procedures used to update the Los Angeles Basin Watershed Model (LABWM) (Hevesi and Johnson, 2016) from INFIL3.0 (USGS, 2008a, 2008b) to INFIL4.0. The LABWM provides gridded monthly infiltration, evaporation, recharge, and runoff estimates for the Los Angeles region using the water balance recharge model, INFIL. INFIL is a grid-based...
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California Water Science Center

Data release of hydrogeologic data of the Hat Creek basin, Shasta County, California Data release of hydrogeologic data of the Hat Creek basin, Shasta County, California

This data release contains California Department of Water Resources borehole data that were regularized by the US Geological Survey. The dataset contains borehole lithologic data, and geospatial data of water wells in the Hat Creek basin California, located east of Mount Shasta in northern California. The borehole dataset is released as an excel table and a shapefile and includes (1)...
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California Water Science Center

Pumping, Injection, and Water Spreading Model Input for the Los Angeles Coastal Plain Groundwater Model - MF6 Pumping, Injection, and Water Spreading Model Input for the Los Angeles Coastal Plain Groundwater Model - MF6

These data include pumping, injection, and water spreading input data for the MODFLOW-6 extension and update to Los Angeles Coastal Plain Groundwater Model (LACPGM-MF6) for the years 2016-2020. The LACPGM-MF6 required model inputs to represent groundwater injection, groundwater extraction, and water spreading. Extended datasets include four barrier project injection rates, two...
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California Water Science Center

Russian River Integrated Hydrologic Model (RRIHM): Land use layer used to define simulated agricultural fields and crops Russian River Integrated Hydrologic Model (RRIHM): Land use layer used to define simulated agricultural fields and crops

The Russian River Watershed (RRW) covers about 1,300 square miles (without Santa Rosa Plain) of urban, agricultural, and forested lands in northern Sonoma County and southern Mendocino County, California. Communities in the RRW depend on a combination of Russian River water and groundwater to meet their water-supply demands. Water is used primarily for agricultural irrigation, municipal...
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California Water Science Center

Bathymetric survey and stage-storage assessment of Quail Lake, Calif., collected in 2022 Bathymetric survey and stage-storage assessment of Quail Lake, Calif., collected in 2022

This bathymetric dataset provides an update to the stage-storage relation for Quail Lake (reservoir) located in the El Dorado National Forest, Calif. Bathymetric data was collected using a multibeam echo sounder to provide near-complete coverage and was merged with USGS 3DEP lidar to compute a DEM of the lake and near shore. The DEM was used to computed storage and surface area for a...
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California Water Science Center

Little Rock Reservoir, California, 2022 bathymetric survey and stage-storage computations Little Rock Reservoir, California, 2022 bathymetric survey and stage-storage computations

This bathymetric dataset provides an update to the stage-storage relation for Little Rock Reservoir located in the Angeles National Forest, California. Bathymetric data was collected using a multibeam echo sounder to provide near-complete coverage and was merged with U.S. Geological Survey 3D Elevation Project lidar to compute a digital elevation model (DEM) of the reservoir and...
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California Water Science Center

Pesticide concentrations in bees and other matrices collected from sunflower fields (with and without a neonicotinoid seed treatment) near Sacramento, California Pesticide concentrations in bees and other matrices collected from sunflower fields (with and without a neonicotinoid seed treatment) near Sacramento, California

Hybrid sunflower production occurs near Sacramento in Northern California where seed treatments are commonly used. In this study, four locations were sampled in 2016 as matched pairs; half of each field was sown with thiamethoxam treated seed and half without. In addition to the thiamethoxam seed treatment, all seeds were coated with two fungicides, fludioxonil and mefenoxam/metalaxyl...
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California Water Science Center

Bathymetry, Stage-Area, and Stage-Volume Tables for the Calaveras Reservoir, California, 2019 (ver. 2.0, March 2025) Bathymetry, Stage-Area, and Stage-Volume Tables for the Calaveras Reservoir, California, 2019 (ver. 2.0, March 2025)

Dataset contains reservoir bathymetry and shoreline topography up to dam crest elevation. Data were collected using small uncrewed aerial system (sUAS), multibeam sonar, and terrestrial lidar. Version 2.0 The multibeam sonar & terrestrial lidar data in version 2 was reprocessed for higher accuracy. 1-meter lidar data for 2020 from the USGS 3DEP program was used around the shoreline of...
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California Water Science Center

Evaluation of Hydrodynamic Mixing in Keswick Reservoir, California, 2021-22 Evaluation of Hydrodynamic Mixing in Keswick Reservoir, California, 2021-22

California's State Water Resources Control Board (SWRCB) wishes to quantify how water and constituents introduced via the outflow from the Spring Creek Diversion Dam mix with water within Keswick Reservoir. Of primary interest is the degree of dilution that exists when this introduced flow reaches the main stem of Keswick Reservoir, and how this mixing is influenced by different...
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California Water Science Center

Salinas Valley Hydrologic Models: Surface Water Data (ver. 1.1, September 2024) Salinas Valley Hydrologic Models: Surface Water Data (ver. 1.1, September 2024)

This digital dataset contains the surface water data used for both the Salinas Valley Watershed Model (SVWM) and the Lower Salinas Valley Hydrologic Models (Salinas Valley Integrated Hydrologic Model (SVIHM) and Salinas Valley Operational Model (SVOM)). The surface water dataset includes describes two regions of the Salinas River Watershed; the upper region is occurs primarily within San...
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California Water Science Center

Lower Salinas Valley Hydrologic Models: Discretization Data (ver. 1.2, August 2024) Lower Salinas Valley Hydrologic Models: Discretization Data (ver. 1.2, August 2024)

The Lower Salinas Valley Hydrologic Models’ discretization data includes a shapefile of the model domain and layers and a shapefile of the water balance subregions. The Lower Salinas Valley Hydrologic Models (LSVHM) include a historical model, the Salinas Valley Integrated Hydrologic Model (SVIHM) and a reservoir operations model, the Salinas Valley Operational Model (SVOM). While the...
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California Water Science Center
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