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California Water Science Center

The U.S. Geological Survey, California Water Science Center provides reliable, impartial, foundational data and scientific analysis to address water issues facing California today. We conduct hydrologic monitoring and investigative studies in partnership with tribal, federal, state, and local agencies to assist them in managing California's water resources.

News

USGS Scientists Present Findings at Clear Lake Integrated Science Symposium 2024

USGS Scientists Present Findings at Clear Lake Integrated Science Symposium 2024

USGS Water Science Centers Join Forces at 2024 Lake Tahoe Summit

USGS Water Science Centers Join Forces at 2024 Lake Tahoe Summit

Using Mixed Telemetry Methods to Measure Soil Moisture for Improving Runoff Forecasting in the Sierra Nevada

Using Mixed Telemetry Methods to Measure Soil Moisture for Improving Runoff Forecasting in the Sierra Nevada

Publications

Using a time-of-travel sampling approach to quantify per- and polyfluoroalkyl substances (PFAS) stream loading and source inputs in a mixed-source, urban catchment

Understanding per- and polyfluoroalkyl substances (PFAS) mass distribution in surface and groundwater systems can support source prioritization, load reduction, and water management. Thirteen sites within an urban catchment were sampled utilizing a time-of-travel sampling approach to minimize the influence of subdaily fluctuations in mass from PFAS point sources and to quantify PFAS and ancillary
Authors
Emily Woodward, Lisa A. Senior, Jacob Fleck, Larry B. Barber, Angela Hansen, Joseph W. Duris

U.S. Geological Survey climate science plan—Future research directions

Executive Summary Climate is the primary driver of environmental change and is a key consideration in defining science priorities conducted across all mission areas in the U.S. Geological Survey (USGS). Recognizing the importance of climate change to its future research agenda, the USGS’s Climate Science Steering Committee requested the development of a Climate Science Plan to identify future rese
Authors
Tamara Wilson, Ryan P. Boyles, Nicole DeCrappeo, Judith Z. Drexler, Kevin D. Kroeger, Rachel A. Loehman, John M. Pearce, Mark P. Waldrop, Peter D. Warwick, Anne M. Wein, Sara L. Zeigler, T. Douglas Beard,

Age, growth, and trophic ecology of the Redeye Bass, an introduced invader of California rivers

ObjectiveThe Redeye Bass Micropterus coosae is a piscivore introduced into California, which has become a threat to the state's endemic freshwater fishes. It has eliminated native fishes from the middle reaches of the Cosumnes River, our study stream, which is the largest stream without a major dam on its main stem in the Sacramento–San Joaquin River drainage, central California, USA. We thoroughl
Authors
Beth C. Long, Peter B. Moyle, Matthew J. Young, Patrick K. Crain

Science

Habitat Vulnerability to Climate Change: Identifying Climate Change Induced Mass Mortality Events Across Large Landscapes of the United States

USGS researchers will characterize extreme climatic events across U.S. following a review of case studies of mass mortality events associated with climate extremes including drought, precipitation, freeze, heat waves, and storm events.
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Habitat Vulnerability to Climate Change: Identifying Climate Change Induced Mass Mortality Events Across Large Landscapes of the United States

USGS researchers will characterize extreme climatic events across U.S. following a review of case studies of mass mortality events associated with climate extremes including drought, precipitation, freeze, heat waves, and storm events.
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Post-Fire Hazards Impacts to Resources and Ecosystems (PHIRE): Support for Response, Recovery, and Mitigation

The Post-Fire Hazards Impacts to Resources and Ecosystems (PHIRE) project provides science to characterize climate-amplified, uncharacteristic patterns of wildfire disturbance and post-fire ecosystem recovery and enhance prediction of environmental impacts and post-fire hazards.
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Post-Fire Hazards Impacts to Resources and Ecosystems (PHIRE): Support for Response, Recovery, and Mitigation

The Post-Fire Hazards Impacts to Resources and Ecosystems (PHIRE) project provides science to characterize climate-amplified, uncharacteristic patterns of wildfire disturbance and post-fire ecosystem recovery and enhance prediction of environmental impacts and post-fire hazards.
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Bay-Delta Catchability Study

Addressing Catchability Bias in Fish Surveys San Francisco Bay and the Sacramento-San Joaquin Delta collectively make up the "Bay-Delta." In the scientific study of fish, "catchability" refers to the probability that a fish will be captured by a particular fishing gear or method. Catchability is a measure of how effectively a fishing gear or method can capture fish. "Catch data" refer to...
link

Bay-Delta Catchability Study

Addressing Catchability Bias in Fish Surveys San Francisco Bay and the Sacramento-San Joaquin Delta collectively make up the "Bay-Delta." In the scientific study of fish, "catchability" refers to the probability that a fish will be captured by a particular fishing gear or method. Catchability is a measure of how effectively a fishing gear or method can capture fish. "Catch data" refer to...
Learn More
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