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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: 446

Model Archive Summary for Turbidity Derived Suspended-Sediment Concentrations at 11313315, Old River Near Byron, California (2020-until superseded) Model Archive Summary for Turbidity Derived Suspended-Sediment Concentrations at 11313315, Old River Near Byron, California (2020-until superseded)

This Model Archive Summary (MAS) describes the development of a turbidity derived suspended-sediment concentration (SSC) time-series computation model. The MAS includes all the methods and techniques used to develop the model for USGS station 11313315 Old River Near Byron, California. The time-series suspended-sediment concentration data are representative of the cross section and are...
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California Water Science Center

Los Angeles River Suspended Sediment Concentration Data, April 2021- November 2023 Los Angeles River Suspended Sediment Concentration Data, April 2021- November 2023

The Los Angeles River flows through a heavily urbanized area and the river is managed for multiple uses, including flood control, habitat, and recreation. The objective of this study was to collect data on stream flow and suspended sediment concentrations (SSC) at sites along the Los Angeles River and its tributaries in the Sepulveda Flood Control Basin (SFCB) to better understand...
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California Water Science Center

Model Archive Summary for Turbidity Derived Suspended-Sediment Concentrations at U.S. Geological Survey Station 11313460; San Joaquin River at Prisoners Point near Terminous, California (2014 – 2020) Model Archive Summary for Turbidity Derived Suspended-Sediment Concentrations at U.S. Geological Survey Station 11313460; San Joaquin River at Prisoners Point near Terminous, California (2014 – 2020)

Continuous 15-minute time-series suspended-sediment concentration (SSC) data computed from U.S. Geological Survey (USGS) instream turbidity data using a YSI EXO2 multi-parameter water quality sonde for the San Joaquin River at Prisoners Point near Terminous, California, USGS station #11313460. A Model Archive Summary (MAS) describes the development of a continuous 15-minute SSC time...
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California Water Science Center

Upper Feather River Watershed 30-meter Basin Characterization Model - Monthly Historical Climate and Hydrology Upper Feather River Watershed 30-meter Basin Characterization Model - Monthly Historical Climate and Hydrology

This data release includes the revised downscaled climate inputs and hydrologic outputs from the Basin Characterization Model (BCM) version 8 (v8), described in Flint and others (2021a), in a 30 by 30-meter spatial resolution at a monthly time step from water years 1896 to 2024 for the upper Feather River watershed. This data release includes five child items: 1. 30-year summaries, 2...
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California Water Science Center

Data for Analysis of Decadal Trends in the Quality of Groundwater Used for Public Drinking-Water Supply in California, 2004-2023, California GAMA Priority Basin Project Data for Analysis of Decadal Trends in the Quality of Groundwater Used for Public Drinking-Water Supply in California, 2004-2023, California GAMA Priority Basin Project

This data release documents datasets supporting analysis of decadal trends in the quality of groundwater resources used for public drinking-water supply across California. The analysis primarily utilizes samples collected by the U.S. Geological Survey's Groundwater Ambient Monitoring and Assessment Priority Basin Project (GAMA-PBP) during 2004-2023 as part of a cooperative research...
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California Water Science Center

Mercury, methylmercury, and related geochemical data from incubations of materials flocculated in mesocosms within the Cache Creek Settling Basin, California Mercury, methylmercury, and related geochemical data from incubations of materials flocculated in mesocosms within the Cache Creek Settling Basin, California

The U.S Geological Survey (USGS) is assessing the potential for in-situ addition of metal-based coagulants to enhance mercury (Hg) capture in the Cache Creek Settling Basin (CCSB), a wetland-like environment designed to trap mercury-contaminated sediments from upstream historical mining activities in the Cache Creek watershed. Laboratory and field tests by the USGS show that three tested
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California Water Science Center

Concentrations of Flea Treatment Insecticides in Prairie Dog Bait Pellets Concentrations of Flea Treatment Insecticides in Prairie Dog Bait Pellets

A collaborative effort with US Fish and Wildlife Services is underway with the goal of reducing the spread of flea contracted plague in prairie dog (Cynomys spp.) colonies across the US. One method of flea reduction being studied involves spreading bait pellets containing insecticides commonly used for flea control around prairie dog habitats. To better understand the effectiveness of...
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California Water Science Center

Three-Dimensional Chronostratigraphic Model and supporting well data for the Los Angeles Coastal Plain, Los Angeles and Orange Counties, California Three-Dimensional Chronostratigraphic Model and supporting well data for the Los Angeles Coastal Plain, Los Angeles and Orange Counties, California

This data release contains a digital geospatial dataset generated by the U.S. Geological Survey under a cooperative agreement with the Water Replenishment District of Southern California to characterize the three-dimensional hydrogeology of the Los Angeles Coastal Plain. The geospatial dataset covers about 580 square miles of the largest coastal plain of southern California and contains...
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California Water Science Center

Data for decadal shifts in groundwater age detected by environmental tracers across California, USA Data for decadal shifts in groundwater age detected by environmental tracers across California, USA

This data release documents seven tables containing environmental tracer data and lumped parameter model results used to evaluate temporal changes in groundwater age at 268 sites across California from 2004 to 2021. These sites are spatially distributed throughout the state and represent groundwater at depths used for public supply. Each site was sampled at least twice, with paired...
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California Water Science Center

Synthesized Domestic Well Database for the Conterminous United States Synthesized Domestic Well Database for the Conterminous United States

Self-supplied domestic water sources play a significant role in the United States' water landscape, serving approximately 13 percent of the nation's population as of 2015 (Dieter and others, 2018). However, these sources present unique challenges for water resource management and research due to the lack of monitoring, withdrawal location, and place-of-use data. To address this data gap...
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California Water Science Center

Geophysical, geological, hydrological, and geochemical data for aquifer salinity mapping in the Midway Valley, Kern County, California Geophysical, geological, hydrological, and geochemical data for aquifer salinity mapping in the Midway Valley, Kern County, California

The U.S. Geological Survey (USGS) in cooperation with the California State Water Resources Control Board (State Water Board) compiled and analyzed data for mapping groundwater salinity, characterizing aquifer systems, and documenting the effects of oil-field water disposal and well integrity issues in the Midway Valley area of San Joaquin Valley, California, associated with the Midway...
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California Water Science Center

Post-Optimization Scenarios for the Santa Barbara Groundwater Model, California Post-Optimization Scenarios for the Santa Barbara Groundwater Model, California

The city of Santa Barbara, in cooperation with the U.S. Geological Survey (USGS) California Water Science Center, developed a three-dimensional density-dependent groundwater-flow and solute-transport model (the Santa Barbara Flow and Transport Model; Paulinski and others, 2018; Nishikawa and others, 2018). The Santa Barbara Flow and Transport Model met the objectives of estimating the
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California Water Science Center
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