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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: 493

Model Archive Summary for turbidity derived suspended-sediment concentration at USGS site 11530500 Klamath River near Klamath, California (November 2018 until superseded) Model Archive Summary for turbidity derived suspended-sediment concentration at USGS site 11530500 Klamath River near Klamath, California (November 2018 until superseded)

This model archive summary describes the development of a turbidity derived suspended-sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Klamath River near Klamath, CA – USGS site ID 11530500. The time series suspended-sediment data will help determine the suspended-sediment concentration at the site in...
By
California Water Science Center

Model Archive Summary for turbidity derived suspended-sediment concentration at USGS site 11520500 Klamath River near Seiad Valley, California (November 2018 until superseaded) Model Archive Summary for turbidity derived suspended-sediment concentration at USGS site 11520500 Klamath River near Seiad Valley, California (November 2018 until superseaded)

This model archive summary describes the development of a turbidity derived suspended-sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Klamath River near Seiad Valley, CA – USGS site ID 11520500. The time series suspended-sediment data will help determine the suspended-sediment concentration at the...
By
California Water Science Center

Model Archive Summary for turbidity derived suspended-sediment concentration at USGS site 11523000 Klamath River at Orleans, California (April 2019 until superseded) Model Archive Summary for turbidity derived suspended-sediment concentration at USGS site 11523000 Klamath River at Orleans, California (April 2019 until superseded)

This model archive summary describes the development of a turbidity derived suspended-sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Klamath River at Orleans, CA – USGS site ID 11523000. The time series suspended-sediment data will help determine the suspended-sediment concentration at the site in...
By
California Water Science Center

Alaska National Hydrologic Model (NHM) application,1980 - 2021 (ver. 2.0, September 2025) Alaska National Hydrologic Model (NHM) application,1980 - 2021 (ver. 2.0, September 2025)

This work contributes to an understanding of the hydrologic cycle of the State of Alaska, USA, and parts of the Canadian Yukon Territory and British Columbia Province draining into Alaska. For purposes of this study, the domain is simply referred to as “Alaska (AK)". This data release contains inputs for and outputs from hydrologic simulations for the Alaska (AK) domain using the...
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California Water Science Center

Mean-monthly global gridded calibration targets and parameter values derived from monthly-mean Global Circulation Model (GCM) simulations, January 1980 - November 2022 Mean-monthly global gridded calibration targets and parameter values derived from monthly-mean Global Circulation Model (GCM) simulations, January 1980 - November 2022

This work contributes to an understanding of the global hydrologic cycle. Global Circulation Model (GCM) data from National Aeronautics and Space Administration (NASA) were processed into 10 mean-monthly global datasets stored in NetCDF formatrepresenting 12 mean-monthly layers ( .nc file extension; https://www.unidata.ucar.edu/software/netcdf/ ). These NetCDF files are used as...
By
California Water Science Center

Model Archive Summary for turbidity derived suspended-sediment concentration at 11455143 Little Holland Tract North Breach, Ca Model Archive Summary for turbidity derived suspended-sediment concentration at 11455143 Little Holland Tract North Breach, Ca

Continuous Suspended-Sediment Concentration (mg/L) 15-minute time-series data computed from turbidity data during water years 2014-2018. The model information is available in the Model Archive Summary document.
By
California Water Science Center

Model Archive Summary for acoustic derived suspended fine-sediment concentration from 2016 to 2023 at 14144700 Columbia River at Vancouver, Washington Model Archive Summary for acoustic derived suspended fine-sediment concentration from 2016 to 2023 at 14144700 Columbia River at Vancouver, Washington

This model archive summary describes the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Columbia River at Vancouver, WA – USGS site ID 14144700. The time series suspended sediment data will help determine the suspended sediment concentration at the site...
By
California Water Science Center

Optical measurements for surface water samples collected within South San Francisco Bay in support of mercury modeling Optical measurements for surface water samples collected within South San Francisco Bay in support of mercury modeling

Little is known about mercury concentrations at bay margins, and how climate change, including changes in temperature and precipitation, will affect mercury exposure and methylmercury (MeHg) production. In addition, the San Francisco South Bay Salt Ponds Restoration Program (SBSPRP) needs more efficient and effective mercury monitoring approaches at larger spatial scales to understand...
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California Water Science Center

High-resolution mapping survey data of nutrients and related water quality constituents in the San Francisco Bay Delta, Lake Oroville, and San Luis Reservoir at the landscape scale: 2015-2022 High-resolution mapping survey data of nutrients and related water quality constituents in the San Francisco Bay Delta, Lake Oroville, and San Luis Reservoir at the landscape scale: 2015-2022

Broad-area, high-resolution, boat-based water quality mapping surveys of the San Francisco Bay, the Sacramento-San Joaquin Delta (Delta), Lake Oroville, and San Luis Reservoir were conducted at various times between April 2015 and April 2022. Each survey was conducted over the course of a single day. The region covered included the east-west axis of the San Francisco Bay Delta from the...
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California Water Science Center

Model Archive Summary and Time-Series Suspended-Sediment Concentrations Computed from a Surrogate Turbidity Regression at USGS Station 11336930 Mokelumne River at Andrus Island near Terminous, Ca (2010 - 2016) Model Archive Summary and Time-Series Suspended-Sediment Concentrations Computed from a Surrogate Turbidity Regression at USGS Station 11336930 Mokelumne River at Andrus Island near Terminous, Ca (2010 - 2016)

Continuous 15-minute time-series suspended-sediment concentration data computed from instream turbidity data. Turbidty data is managed by California Department of Water Resources (CDWR) using a YSI 6-series multi-parameter water quality sonde. Complete methods for turbidity data collection are described in attached methods document.
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California Water Science Center

Model Archive Summary and Time-Series Suspended-Sediment Concentration Computed from a Surrogate Turbidity Regression at USGS station 382829121351801; Toe Drain Near Babel Slough Near Freeport, California (2014-2019) Model Archive Summary and Time-Series Suspended-Sediment Concentration Computed from a Surrogate Turbidity Regression at USGS station 382829121351801; Toe Drain Near Babel Slough Near Freeport, California (2014-2019)

Model Archive Summary (MAS), "382829121351801_LIS_ExtendedMAS.docx", describing the development of a continuous, 15-minute suspended-sediment concentration (SSC) time series regression model for the site: Toe Drain Near Babel Slough Near Freeport, California (U.S. Geological Survey (USGS) site #382829121351801). The SSC time series is computed from instream turbidity data that is managed...
By
California Water Science Center

Model Archive Summary for Suspended-Sediment Concentrations at U.S. Geological Survey Station 11304810 San Joaquin River below Garwood Bridge at Stockton, California (2015-2023) Model Archive Summary for Suspended-Sediment Concentrations at U.S. Geological Survey Station 11304810 San Joaquin River below Garwood Bridge at Stockton, California (2015-2023)

This Model Archive Summary (MAS) describes the development of a suspended-sediment concentration (SSC) time-series computation model. The MAS includes all the methods and techniques used to develop the model for USGS station 11304810 San Joaquin River below Garwood, California. The time-series suspended-sediment concentration data are representative of the cross section and are adequate...
By
California Water Science Center
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