Geohydrology

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  • 2017 Salinas Valley Groundwater Level Contours & Seawater Intrusion Maps

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    2017 Salinas Valley Groundwater Level Contours & Seawater Intrusion Maps

    Monterey County Water Resources Agency (MCWRA) | April 24, 2018...
    Summary

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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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  • A Water Resources Data Network Evaluation for Monterey County, California; Phase 1; South County

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    A Water Resources Data Network Evaluation for Monterey County, California; Phase 1; South County

    U..S. Geological Survey, Monterey County Flood Control and Water Conservation District | July 12, 1986...
    Summary

    An evaluation made of rainfall, surface water, groundwater, and water quality monitoring networks in Salinas River basin in southern Monterey County, California, proposed...

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  • A Water Resources Data Network Evaluation for Monterey County, California; Phase 3, Northern Salinas River Drainage Basin

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    A Water Resources Data Network Evaluation for Monterey County, California; Phase 3, Northern Salinas River Drainage Basin

    U.S. Geological Survey, Monterey County Flood Control and Water Conservation District | December 13, 1990...
    Summary

    Continuing data collection and analysis are vital to efficient development and management of water resources. To insure that water managers have adequate information...

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  • Alamitos Barrier Project: Annual Report on the Control of Seawater Intrusion 2016-2017

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    Alamitos Barrier Project: Annual Report on the Control of Seawater Intrusion 2016-2017

    Los Angeles County Department of Public Works | June 30, 2017...
    Summary

    The Alamitos Barrier Project (ABP) was designed and constructed to protect the groundwater supplies of the Central/Orange County Basin of the Coastal Plain...

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  • Analysis and simulation of regional subsidence accompanying groundwater abstraction and compaction of susceptible aquifer systems in the USA

    Analysis and simulation of regional subsidence accompanying groundwater abstraction and compaction of susceptible aquifer systems in the USA

    Boletín de la Sociedad Geológica Mexicana | January 17, 2013...
    Summary

     Regional aquifer-system compaction and land subsidence accompanying groundwater abstraction in susceptible aquifer systems in the USA is a challenge for managing groundwater resources...

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  • Assessment of Interconnected Subbasins

    Assessment of Interconnected Subbasins

    Butte County | June 30, 2017...
    Summary

    The Sustainable Groundwater Management Act (SGMA) requires groundwater sustainability agencies (GSAs) to develop groundwater sustainability plans (GSPs) that achieve sustainable groundwater management within...

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  • Assessment of Interconnected Subbasins: Regional Collaboration and Model Selection Process

    Assessment of Interconnected Subbasins: Regional Collaboration and Model Selection Process

    Groundwater Resources Association of California | October 3, 2017...
    Summary

    In basins with complex spatial and temporal variations in water budget components, integrated groundwater-surface water modeling is the best approach to quantify and...

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  • Bulletin No. 52-B Salinas Basin Investigation Summary Report

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    Bulletin No. 52-B Salinas Basin Investigation Summary Report

    California Department of Water Resources, formerly State Department of Public Works Division of Water Resources | December 13, 1946...
    Summary

    The Board of Supervisors and the Flood Control and Water Conservation Conmittee of the County of Monterey became concerned in April 1944 over...

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  • California Groundwater Units

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    California Groundwater Units

    U.S. Geological Survey (USGS) | June 5, 2014...
    Summary

    The California Groundwater Units dataset classifies and delineates areas within the State of California into one of three groundwater-based polygon units: (1) those...

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  • California Statewide Groundwater Elevation Monitoring (CASGEM) Status Report 2012

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    California Statewide Groundwater Elevation Monitoring (CASGEM) Status Report 2012

    California Department of Water Resources (DWR) | April 23, 2012...
    Summary

    Senate Bill X7 6 (SBX7 6) (Chapter 1, Statutes 2009) added provisions for Groundwater Monitoring to Division 6 of the Water Code (Water...

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  • California’s Groundwater Update 2013: A Compilation of Enhanced Content for California Water Plan Update 2013

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    California’s Groundwater Update 2013: A Compilation of Enhanced Content for California Water Plan Update 2013

    California Department of Water Resources (DWR) | April 1, 2015...
    Summary

    The primary goal of California’s Groundwater Update 2013: A Compilation of Enhanced Content for California Water Plan Update 2013 (California’s Groundwater Update 2013)...

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  • Coupling a spatiotemporally distributed soil water budget with stream‐depletion functions to inform stakeholder‐driven management of groundwater‐dependent ecosystems

    Coupling a spatiotemporally distributed soil water budget with stream‐depletion functions to inform stakeholder‐driven management of groundwater‐dependent ecosystems

    American Geophysical Union (AGU) | November 12, 2013...
    Summary

    Groundwater pumping, even if only seasonal, may significantly impact groundwater‐dependent ecosystems through increased streamflow depletion, particularly in semiarid and arid regions. The effects...

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  • Data from a Thick Unsaturated Zone Underlying Oro Grande and Sheep Creek Washes in the Western Part of the Mojave Desert, near Victorville, San Bernardino County, California

    Data from a Thick Unsaturated Zone Underlying Oro Grande and Sheep Creek Washes in the Western Part of the Mojave Desert, near Victorville, San Bernardino County, California

    U.S. Geological Survey | January 1, 2000...
    Summary

    This report presents data collected as part of a cooperative study of infiltration and groundwater recharge to the regional aquifer near Victorville, California....

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  • Depletion Requiremements in California’s Sustainable Groundwater Management Act

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    Depletion Requiremements in California’s Sustainable Groundwater Management Act

    Environmental Defense Fund | May 17, 2018...
    Summary

    Successful implementation of the Sustainable Groundwater Management Act (SGMA), including its provision to avoid signicant and unreasonable depletion of interconnected surface water, is...

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  • Detection of aquifer system compaction and land subsidence using interferometric synthetic aperture radar, Antelope Valley, Mojave Desert, California

    Detection of aquifer system compaction and land subsidence using interferometric synthetic aperture radar, Antelope Valley, Mojave Desert, California

    Water Resources Research, U.S. Geological Survey (USGS) | April 15, 1998...
    Summary

    Interferometric synthetic aperture radar (InSAR) has great potential to detect and quantify land subsidence caused by aquifer system compaction. InSAR maps with high...

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  • Dry groundwater wells in the western United States

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    Dry groundwater wells in the western United States

    Environmental Research Letters | July 28, 2017...
    Summary

    Declining groundwater levels are common in parts of the western US, but their impact on the ability of wells to pump groundwater is...

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  • Effects of Groundwater Pumping on Agricultural Drains in the Tule Lake Subbasin, Oregon and California

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    Effects of Groundwater Pumping on Agricultural Drains in the Tule Lake Subbasin, Oregon and California

    U.S. Geological Survey, U.S. Fish and Wildlife Service, U.S. Bureau of Reclamation | July 24, 2015...
    Summary

    Since 2001, irrigators in the upper Klamath Basin have increasingly turned to groundwater to compensate for reductions in surface-water allocation caused by shifts...

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  • Estimating the permanent loss of groundwater storage in the southern San Joaquin Valley, California

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    Estimating the permanent loss of groundwater storage in the southern San Joaquin Valley, California

    American Geophysical Union Water Resources Research | February 23, 2017...
    Summary

    In the San Joaquin Valley, California, recent droughts starting in 2007 have increased the pumping of groundwater, leading to widespread subsidence. In the...

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  • Evaluation of a Ground-Water Flow and Transport Model of the Upper Coachella Valley, California

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    Evaluation of a Ground-Water Flow and Transport Model of the Upper Coachella Valley, California

    U.S. Geological Survey; California Regional Water Quality Control Board, Colorado River Basin Region | June 25, 1992...
    Summary

    A geohydrologic data base was compiled to evaluate the changes in ground-water conditions in the upper Coachella Valley, California, since 1978, when the...

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