California Water Science Center


The California Water Science Center has adjusted activities in response to guidance concerning the global COVID-19 pandemic. We will carry on the work of the USGS, while also maintaining the health and safety of our employees and community.  Based on direction from the White House, the CDC, and state and local authorities, we are shifting to a virtual mode. 

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Water Research Projects

Water Research Projects

Over 100 research projects addressing California's key water issues including: long-term water supply and availability, water quality, droughts and floods, climate change, aquatic ecology, the Delta, management of watersheds and groundwater.

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Partnering with Us

The USGS partners with local, state, and other federal agencies to provide scientific information needed by water-resources managers across the Nation.

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Basic hydrologic data collection, processing, analysis, dissemination, and archiving are major parts of the California Water Science Center program.

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May 10, 2021

California Waters - Spring 2021 - Vol. I | Issue II


Welcome to the USGS California Water Science Center newsletter. The purpose of this newsletter is to keep its readers updated with current research projects, the latest publications, and other work the center is doing.

Eric Reichard, Director of the California Water Science Center

This newsletter is also available on the web.

Date published: April 28, 2021

USGS Participates in 2021 Orange County Youth Environmental Summit

From April 19th through the 23rd, 2021, the USGS California Water Science Center (CAWSC) participated in the first virtual Orange County Youth Environmental Summit (YES). The award-winning program, formerly known as the Children's Water Education Festival, offers 3rd, 4th, and 5th graders opportunities for learning and engagement.

Date published: April 13, 2021

Bay-Delta Science Conference Goes Virtual

From April 6-9, 2021, more than 1,000 scientists, managers, and policymakers gathered virtually for the 11th Biennial Bay-Delta Science Conference.  This year’s conference "Building Resilience Through Diversity in Science" featured a plenary talk by California Water Science Center (CAWSC) Director Eric Reichard who is presently serving as Acting USGS Southwest Regional Director.


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Year Published: 2021

Effects of tidally varying river flow on entrainment of juvenile salmon into Sutter and Steamboat Sloughs

Survival of juvenile salmonids in the Sacramento–San Joaquin Delta (Delta) varies by migration route, and thus the proportion of fish that use each route affects overall survival through the Delta. Understanding factors that drive routing at channel junctions along the Sacramento River is therefore critical to devising management strategies that...

Romine, Jason G.; Perry, Russell; Stumpner, Paul; Blake, Aaron R.; Burau, Jon R.

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Year Published: 2021

Relative risk of groundwater-quality degradation near California (USA) oil fields estimated from 3H, 14C, and 4He

Relative risks of groundwater-quality degradation near selected California oil fields are estimated by examining spatial and temporal patterns in chemical and isotopic data in the context of groundwater-age categories defined by tritium and carbon-14. In the Coastal basins, western San Joaquin Valley (SJV), and eastern SJV; 82, 76, and 0...

McMahon, Peter B.; Landon, Matthew K.; Davis, Tracy; Wright, Michael; Rosecrans, Celia Z.; Anders, Robert; Land, Michael; Kulongoski, Justin T.; Hunt, Andrew

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Year Published: 2021

Amplified impact of climate change on fine-sediment delivery to a subsiding coast, Humboldt Bay, California

In Humboldt Bay, tectonic subsidence exacerbates sea-level rise (SLR). To build surface elevations and to keep pace with SLR, the sediment demand created by subsidence and SLR must be balanced by an adequate sediment supply. This study used an ensemble of plausible future scenarios to predict potential climate change impacts on suspended-sediment...

Curtis, Jennifer; Flint, Lorraine E.; Stern, Michelle A.; Lewis, Jack; Klein, Randy D.