subsidence

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  • Age Determination of the Remaining Peat in the Sacramento–San Joaquin Delta, California, USA

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    Age Determination of the Remaining Peat in the Sacramento–San Joaquin Delta, California, USA

    U.S. Geological Survey (USGS) | October 9, 2007...
    Summary

    The Sacramento–San Joaquin Delta of California was once a 1,400 square kilometer (km2) tidal marsh, which contained a vast layer of peat ranging...

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  • California Aqueduct Subsidence Study

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    California Aqueduct Subsidence Study

    Department of Water Resources | June 1, 2017...
    Summary

    In 2006, the San Luis Field Division of the California Department of Water Resources' Division of Operations and Maintenance (O&M) began to see...

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  • Delta Subsidence in California: The sinking heart of the State

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    Delta Subsidence in California: The sinking heart of the State

    U.S. Geological Survey (USGS) | April 8, 2000...
    Summary

    The Sacramento-San Joaquin River Delta of California once was a great tidal freshwater marsh blanketed by peat and peaty alluvium. Beginning in the...

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  • Factors and Processes Affecting Delta Levee System Vulnerability

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    Factors and Processes Affecting Delta Levee System Vulnerability

    San Francisco Estuary and Watershed Science | December 1, 2016...
    Summary

    The authors appraised factors and processes related to human activities and high water, subsidence, and seismicity. Farming and drainage of peat soils over...

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  • Faulting caused by groundwater level declines, San Joaquin Valley, California

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    Faulting caused by groundwater level declines, San Joaquin Valley, California

    Water Resources Research, American Geophysical Union | December 18, 1980...
    Summary

    Approximately 230 mm of aseismic vertical offset of the land surface across the Pond?Poso Creek fault in the San Joaquin Valley, California, probably...

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  • Geohydrology, Geochemistry, and Numerical Simulation of Groundwater Flow and Land Subsidence in the Bicycle Basin, Fort Irwin National Training Center, California

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    Geohydrology, Geochemistry, and Numerical Simulation of Groundwater Flow and Land Subsidence in the Bicycle Basin, Fort Irwin National Training Center, California

    U.S. Geological Survey (USGS), Fort Irwin National Training Center | July 19, 2018...
    Summary

    Groundwater pumping from Bicycle Groundwater Basin (referred to as Bicycle Basin) in the Fort Irwin National Training Center, California, began in 1967. From...

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  • Groundwater-Flow and Land-Subsidence Model of Antelope Valley, California

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    Groundwater-Flow and Land-Subsidence Model of Antelope Valley, California

    USGS | October 27, 2014...
    Summary

    Antelope Valley, California, is a topographically closed basin in the western part of the Mojave Desert, about 50 miles northeast of Los Angeles....

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  • Hydrogeology, Hydrologic Effects of Development, and Simulation of Groundwater Flow in the Borrego Valley, San Diego County, California

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    Hydrogeology, Hydrologic Effects of Development, and Simulation of Groundwater Flow in the Borrego Valley, San Diego County, California

    U.S. Geological Survey, Borrego Water District | November 24, 2015...
    Summary

    The Borrego Valley is a small valley (110 square miles) in the northeastern part of San Diego County, California. Although the valley is about...

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  • Integrated simulation of consumptive use and land subsidence in the Central Valley, California, for the past and for a future subject to urbanization and climate change

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    Integrated simulation of consumptive use and land subsidence in the Central Valley, California, for the past and for a future subject to urbanization and climate change

    USGS | October 17, 2010...
    Summary

    Competition for water resources is growing throughout California, particularly in the Central Valley where about 20% of all groundwater used in the United...

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  • Land Subsidence along the Delta-Mendota Canal in the Northern Part of the San Joaquin Valley, California, 2003–10

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    Land Subsidence along the Delta-Mendota Canal in the Northern Part of the San Joaquin Valley, California, 2003–10

    USGS | November 19, 2013...
    Summary

    Extensive groundwater withdrawal from the unconsolidated deposits in the San Joaquin Valley caused widespread aquifer-system compaction and resultant land subsidence from 1926 to...

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  • Land Subsidence from Groundwater Use in California

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    Land Subsidence from Groundwater Use in California

    California Water Foundation | April 5, 2014...
    Summary

    Historically, groundwater has been pumped as needed in many areas of the state, often with little regard for the deleterious effects of over...

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  • Land Subsidence from Groundwater Use in California (Summary Report)

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    Land Subsidence from Groundwater Use in California (Summary Report)

    California Water Foundation | April 5, 2014...
    Summary

    Historically, groundwater has been pumped as needed in many areas of the state, often with little regard for the deleterious effects of over...

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  • Land Subsidence, Groundwater Levels, and Geology in the Coachella Valley, California, 1993–2010

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    Land Subsidence, Groundwater Levels, and Geology in the Coachella Valley, California, 1993–2010

    USGS | June 6, 2014...
    Summary

    Land subsidence associated with groundwater-level declines has been investigated by the U.S. Geological Survey in the Coachella Valley, California, since 1996. Groundwater has...

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  • Measuring Land Subsidence from Space

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    Measuring Land Subsidence from Space

    USGS | April 13, 2000...
    Summary

    Interferometric Synthetic Aperture Radar (InSAR) is a powerful new tool that uses radar signals to measure deformation of the Earth’s crust at an...

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  • Progress Report: Subsidence in California, March 2015 – September 2016

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    Progress Report: Subsidence in California, March 2015 – September 2016

    Jet Propulsion Laboratory | February 7, 2017...
    Summary

    Subsidence caused by groundwater pumping in the Central Valley has been a problem for decades. Over the last few years, interferometric synthetic aperture...

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  • Simulation of ground-water/surface-water fow in the Santa Clara-Calleguas ground-water basin, Ventura County, California

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    Simulation of ground-water/surface-water fow in the Santa Clara-Calleguas ground-water basin, Ventura County, California

    U.S. Geological Survey (USGS) | July 17, 2003...
    Summary

    Groundwater is the main source of water in the Santa Clara–Calleguas ground-water basin that covers about 310 square miles in Ventura County, California....

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  • Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China

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    Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China

    Nature | June 21, 2016...
    Summary

    Contemporary applications of radar altimetry include sea-level rise, ocean circulation, marine gravity, and icesheet elevation change. Unlike InSAR and GNSS, which are widely...

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  • Twenty-First Century Levee Overtopping Projections from InSAR-derived subsidence rates in the Sacramento-San Joaquin Delta: 2006–2010

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    Twenty-First Century Levee Overtopping Projections from InSAR-derived subsidence rates in the Sacramento-San Joaquin Delta: 2006–2010

    California Energy Commission | July 31, 2012...
    Summary

    To provide an updated synoptic assessment of vertical land motion rates in the Sacramento-San Joaquin Delta, the research team performed synthetic aperture radar...

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  • Water availability and land subsidence in the Central Valley, California, USA

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    Water availability and land subsidence in the Central Valley, California, USA

    Hydrogeology Journal | November 17, 2015...
    Summary

    The Central Valley in California (USA) covers about 52,000 km2 and is one of the most productive agricultural regions in the world. This...

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