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 for water in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater...

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  • Adaptation of a reference site selection methodology to creeks and sloughs of California’s Sacramento Valley and alternative strategies for developing a regional bioassessment framework

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    Adaptation of a reference site selection methodology to creeks and sloughs of California’s Sacramento Valley and alternative strategies for developing a regional bioassessment framework

    Central Valley Regional Water Quality Control Board | November 14, 2005...
    Summary

    Bioassessment has shown significant promise as an effective tool for ambient water quality management in many regions of California. However, the scale and...

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  • Adapting to Change: Utility Systems and Declining Flows

    Adapting to Change: Utility Systems and Declining Flows

    California Urban Water Agencies (CUWA) | 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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  • Aluminum- and iron-based coagulation for in-situ removal of dissolved organic carbon, disinfection byproducts, mercury and other constituents from agricultural drain water

    Aluminum- and iron-based coagulation for in-situ removal of dissolved organic carbon, disinfection byproducts, mercury and other constituents from agricultural drain water

    Elsevier | May 9, 2019...
    Summary

    Agricultural production on wetland soils can be significant sources of dissolved organic carbon (DOC), disinfection byproduct precursors, mercury and nutrients to downstream water bodies...

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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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  • Assessment of Interim Flow Water-Quality Data of the San Joaquin River Restoration Program and Implications for Fishes, California, 2009–11

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    Assessment of Interim Flow Water-Quality Data of the San Joaquin River Restoration Program and Implications for Fishes, California, 2009–11

    U.S. Geological Survey (USGS), San Francisco Water Department | June 29, 2015...
    Summary

    After more than 50 years of extensive water diversion for urban and agriculture use, a major settlement was reached among the U.S. Departments...

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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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