State Water Quality

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  • A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA

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    A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA

    Science of the Total Environment | June 9, 2017...
    Summary

    Intense demand forwater in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater resource....

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  • Adapting to Change: Utility Systems and Declining Flows

    Adapting to Change: Utility Systems and Declining Flows

    California Water Urban Agencies | November 1, 2017...
    Summary

    During the recent historic drought, Californians responded to the call for emergency statewide water use reductions, which the state has recognized as a...

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  • Advancement of Salinity and Flow Monitoring in the San Francisco Bay Delta, San Francisco Bay Delta Action Plan Implementation Support, FINAL REPORT

    Advancement of Salinity and Flow Monitoring in the San Francisco Bay Delta, San Francisco Bay Delta Action Plan Implementation Support, FINAL REPORT

    U.S. Geological Survey, U.S. Environmental Protection Agency | February 1, 2017...
    Summary

    This report evaluates the cost and utility of adding coupled surface and near-bottom salinity monitors along the axis of the San Francisco Estuary,...

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  • An Evaluation of Compensatory Mitigation Projects Permitted Under Clean Water Act Section 401 by the California State Water Resources Control Board, 1991-2002

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    An Evaluation of Compensatory Mitigation Projects Permitted Under Clean Water Act Section 401 by the California State Water Resources Control Board, 1991-2002

    California State Water Resources Control Board | August 2, 2008...
    Summary

    The purpose of this project, which was funded by the California State Water Resources Control Board (SWRCB), was to evaluate the compliance and...

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  • An Index of Biotic Integrity (IBI) for Perennial Streams in California’s Central Valley

    An Index of Biotic Integrity (IBI) for Perennial Streams in California’s Central Valley

    California State Water Resources Control Board | December 1, 2008...
    Summary

    Bioassessment is the science of using aquatic organisms as indicators of ecological condition in streams in rivers. Many types of organisms can be...

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  • Assessing the Health of Southern California Streams

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    Assessing the Health of Southern California Streams

    California State Water Resources Control Board | April 14, 2011...
    Summary

    There are over 4,200 miles of perennial streams in the coastal watersheds of Southern California. Effective protection and management of these resources require...

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  • Bay Delta Water Quality Control Plan (Bay Delta Plan)

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    Bay Delta Water Quality Control Plan (Bay Delta Plan)

    California State Water Resources Control Board | December 13, 2006...
    Summary

    "Bay Delta Plan" is short for the State Water Resources Control Board's (State Water Board) San Francisco Bay/Sacramento-San Joaquin Delta Estuary Water Quality...

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  • Benthic Invertebrate and Deposited Sediment TMDL Guidance for the Pajaro River Watershed

    Benthic Invertebrate and Deposited Sediment TMDL Guidance for the Pajaro River Watershed

    California State Water Resources Control Board | March 1, 2016...
    Summary

    The Pajaro River and its tributaries are exposed to sediments from a variety of sources. To establish limits for regulating this pollutant, it...

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  • Bioaccumulation of Pollutants in California Waters: A Review of Historic Data and Assessment of Impacts on Fishing and Aquatic Life

    Bioaccumulation of Pollutants in California Waters: A Review of Historic Data and Assessment of Impacts on Fishing and Aquatic Life

    California State Water Resources Control Board, San Francisco Estuary Institute | October 24, 2007...
    Summary

    This report was written for the State Water Resources Control Board’s Surface Water Ambient Monitoring Program (SWAMP) as a step toward the development...

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  • Biological Condition of Non-Perennial Streams and Spring-Fed Oases in the Colorado River Basin Region

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    Biological Condition of Non-Perennial Streams and Spring-Fed Oases in the Colorado River Basin Region

    California State Water Resources Control Board | August 22, 2014...
    Summary

    The Colorado River Basin Regional Water Board conducted bioassessment sampling at high-quality (i.e., “reference”) streams in their region during 2013-2015. The purpose of...

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