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Data

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.

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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...

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.

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...

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...

Model Archive Summary for Suspended-Sediment Concentrations at U.S. Geological Survey Station 11455385, Cache Slough above Ryer Ferry Near Rio Vista, California (2018 - 2024) Model Archive Summary for Suspended-Sediment Concentrations at U.S. Geological Survey Station 11455385, Cache Slough above Ryer Ferry Near Rio Vista, California (2018 - 2024)

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 11455385, Cache Slough above Ryer Ferry, Near Rio Vista, California. The time-series suspended-sediment concentration data are representative of...

Assessing spatial variability of nutrients, phytoplankton, and related water quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2024 High-resolution mapping surveys Assessing spatial variability of nutrients, phytoplankton, and related water quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2024 High-resolution mapping surveys

Broad-area, high-resolution, boat-based water quality mapping surveys of the Sacramento-San Joaquin Delta (Delta) and Suisun Bay were conducted in May, July, and October of 2024. Each survey was comprised of four successive days of high-resolution mapping. The regions covered included the north-south axis of the Delta from the Sacramento River north of Freeport to the Harvey Banks export...

Hyperspectral measurements from prototypes of low-cost radiometers deployed across the Illinois, Delaware, Snake, and Sacramento-San Joaquin river basins from September 2023 through October 2025 Hyperspectral measurements from prototypes of low-cost radiometers deployed across the Illinois, Delaware, Snake, and Sacramento-San Joaquin river basins from September 2023 through October 2025

In-situ hyperspectral radiometer deployments offer valuable ground truth data for atmospheric corrections of satellite remote sensing over inland and coastal water bodies. These measurements can also be used to model water-quality parameters directly from hyperspectral observations, making such instruments valuable additions to the U.S. Geological Survey (USGS) water-quality monitoring...

Laboratory-based optical measurements for water samples collected from the Cache Creek watershed and settling basin, Yolo County, California Laboratory-based optical measurements for water samples collected from the Cache Creek watershed and settling basin, Yolo County, California

This data release documents measurements related to organic matter concentrations and characteristics in the Cache Creek Settling Basin in Woodland, California. Data files reported here provide full spectral results for absorbance and fluorescence analyses used for statistical modeling for proxy development. Commonly reported diagnostic absorbance wavelengths and fluorescence excitation...

Santa Ana River 270-meter Basin Characterization Model using Weather Generator Scenarios - Monthly Climate and Hydrology Santa Ana River 270-meter Basin Characterization Model using Weather Generator Scenarios - Monthly Climate and Hydrology

This data release includes the downscaled climate inputs from twenty-four Weather Generator Scenarios and hydrologic outputs using the Basin Characterization Model (BCM) version 8 (v8), described in Flint and others (2021a), with a 270 by 270-meter spatial resolution at a monthly time steps from water years 1916 to 2018 for the Santa Ana River watershed. The twenty-four Weather Generator

Santa Ana River Watershed, California 270-meter Basin Characterization Model - Monthly Historical Climate and Hydrology Santa Ana River Watershed, California 270-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 270 by 270-meter spatial resolution at a monthly time step from water years 1896 to 2025 for the Santa Ana River watershed. This data release includes five child items: 1. 30-year summaries, 2...

Global Positioning System Survey Data for 2023, and Terrestrial Laser Scanning Data for 2012 and 2024, Coachella Valley, Riverside County, California Global Positioning System Survey Data for 2023, and Terrestrial Laser Scanning Data for 2012 and 2024, Coachella Valley, Riverside County, California

This data release provides geodetic Global Positioning System (GPS) data collected in 2023 and terrestrial laser scanning (TLS) data collected in 2012 and 2024 to support land-surface subsidence assessments in the southern Coachella Valley and Mission Springs subbasin. GPS measurements were acquired during two 2023 campaigns using seven dual‑frequency Trimble NetRS receivers, Trimble...

Great Basin 200-meter Basin Characterization Model (BCMv8) - Monthly Historical Climate and Hydrology for water years 1896-2025 Great Basin 200-meter Basin Characterization Model (BCMv8) - Monthly Historical Climate and Hydrology for water years 1896-2025

The Great Basin of the United States of America (USA) spans nearly all of Nevada, much of Utah, and parts of Arizona, California, Oregon, Idaho, and Wyoming. The Basin Characterization Model (BCM) version 8 (v8; described in Flint and others, 2021) for the Great Basin is 200 by 200-meter spatial resolution with monthly intervals ranging from water years 1896 to 2025. This data release...
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