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  • Analysis of Groundwater Basin Yield, Upper Santa Clara River Groundwater Basin, East Subbasin, Los Angeles County, California

    Analysis of Groundwater Basin Yield, Upper Santa Clara River Groundwater Basin, East Subbasin, Los Angeles County, California

    Castaic Lake Water Agency, Newhall County Water District, Santa Clarita Water | August 15, 2005...
    Summary

    This report presents an evaluation of the long-term sustainability of existing groundwater management practices in the Santa Clarita Valley, located in northwestern Los Angeles County,...

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  • CalSim II Simulation of Historical SWP-CVP Operations Technical Memorandum Report

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    CalSim II Simulation of Historical SWP-CVP Operations Technical Memorandum Report

    California Department of Water Resources (DWR) | November 12, 2003...
    Summary

    CalSim is a generalized water resources planning tool developed jointly by the Department of Water Resources (DWR) and the US Bureau of Reclamation...

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  • CE2 Model: Evaluating the Costs and Benefits of Urban Water Conservation and Efficiency Measures

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    CE2 Model: Evaluating the Costs and Benefits of Urban Water Conservation and Efficiency Measures

    Pacific Institute | April 26, 2012...
    Summary

    Over the past 25 years, water conservation and efficiency improvements have provided real water savings, allowing many agencies to maintain or reduce water...

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  • DRERIP Ecosystem Conceptual Model: Chemical stressors

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    DRERIP Ecosystem Conceptual Model: Chemical stressors

    California Department of Fish and Wildlife | February 5, 2008...
    Summary

    The Sacramento-San Joaquin Delta ecosystem comprises many different habitat types, and is home to a large number of species. Thousands of chemical contaminants...

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  • DRERIP Ecosystem Conceptual Model: Chinook Salmon & Steelhead

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    DRERIP Ecosystem Conceptual Model: Chinook Salmon & Steelhead

    Department of Fish and Wildlife | September 4, 2012...
    Summary

    This report constitutes the conceptual model for Chinook and steelhead for the Delta Regional Ecosystem Restoration Implementation Plan (DRERIP). The report describes conceptual...

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  • DRERIP Ecosystem Conceptual Model: Delta Aquatic Foodweb

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    DRERIP Ecosystem Conceptual Model: Delta Aquatic Foodweb

    California Department of Fish and Wildlife | October 3, 2008...
    Summary

    This model is a stylization of the actual food web dynamics of the Sacramento?San Joaquin Delta, which are highly dynamic. The region itself...

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  • DRERIP Ecosystem Conceptual Model: Delta smelt

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    DRERIP Ecosystem Conceptual Model: Delta smelt

    Department of Fish and Wildlife | October 22, 2010...
    Summary

    This Conceptual Model is part of a suite of conceptual models which collectively articulate the current scientific understanding of important aspects of the...

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  • DRERIP Ecosystem Conceptual Model: Floodplain

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    DRERIP Ecosystem Conceptual Model: Floodplain

    California Department of Fish and Wildlife | January 22, 2008...
    Summary

    Elements common to all models (Figure 1). Gray shapes (“plaques” in Word parlance) are other DRERIP models. Brown polygons are modifying factors. Pink...

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  • DRERIP Ecosystem Conceptual Model: Green sturgeon

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    DRERIP Ecosystem Conceptual Model: Green sturgeon

    California Department of Fish and Wildlife | December 27, 2008...
    Summary

    The purpose of this report is to develop a conceptual life history model of North American green sturgeon (Acipenser medirostris) and the factors...

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  • DRERIP Ecosystem Conceptual Model: Longfin smelt

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    DRERIP Ecosystem Conceptual Model: Longfin smelt

    Department of Fish and Wildlife | May 1, 2010...
    Summary

    This model describes the “Importance” of stressors on the life history of longfin smelt in the San Francisco Estuary. In addition, the model...

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  • DRERIP Ecosystem Conceptual Model: Mercury

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    DRERIP Ecosystem Conceptual Model: Mercury

    California Department of Fish and Wildlife | January 24, 2008...
    Summary

    Mercury has been identified as an important contaminant in the Delta, based on elevated concentrations of methylmercury (a toxic, organic form that readily...

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  • DRERIP Ecosystem Conceptual Model: Pyrethroids

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    DRERIP Ecosystem Conceptual Model: Pyrethroids

    Department of Fish and Wildlife | February 27, 2008...
    Summary

    To illustrate the applicability of the general model outlined in Delta Chemical Stressors conceptual model Werner et al. (2008), we are providing an...

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  • DRERIP Ecosystem Conceptual Model: Riparian vegetation

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    DRERIP Ecosystem Conceptual Model: Riparian vegetation

    California Department of Fish and Wildlife | November 14, 2008...
    Summary

    The Sacramento-San Joaquin Delta has immense municipal, agricultural, biological and industrial importance to the economy and livelihood of California and in turn to...

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  • DRERIP Ecosystem Conceptual Model: Sacramento splittail

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    DRERIP Ecosystem Conceptual Model: Sacramento splittail

    Department of Fish and Wildlife | September 3, 2008...
    Summary

    Model has not yet fully completed the peer review and collegial review process and final modifications may be required of the developers. Model...

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  • DRERIP Ecosystem Conceptual Model: Sedimentation

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    DRERIP Ecosystem Conceptual Model: Sedimentation

    Department of Fish and Wildlife | November 13, 2007...
    Summary

    1) Sediment supply: The supply of sediment from the watershed to the Delta is limited.  Sediment supply is decreasing due to trapping behind...

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  • DRERIP Ecosystem Conceptual Model: White sturgeon

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    DRERIP Ecosystem Conceptual Model: White sturgeon

    Department of Fish and Wildlife | April 25, 2011...
    Summary

    The purpose of this report is to develop a conceptual life history model of white sturgeon (Acipenser transmontanus) and the factors that affect...

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  • DRERIP Ecosystem Restoration Model: Tidal marsh

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    DRERIP Ecosystem Restoration Model: Tidal marsh

    California Department of Fish and Wildlife | October 1, 2008...
    Summary

    Tidal marshes are a subset of estuarine wetlands defined by the presence of emergent vegetation types uniquely adapted to sheltered intertidal zones of...

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  • Evaluation of Surface-Water/Ground-Water Interactions in the Santa Clara River Valley, Ventura County, California

    Evaluation of Surface-Water/Ground-Water Interactions in the Santa Clara River Valley, Ventura County, California

    U.S. Geological Survey (USGS), United Water Conservation District | May 28, 1999...
    Summary

    The interactions of surface water and ground water along the Santa Clara River in Ventura County, California, were evaluated by analyzing river-discharge and water-quality data and geohydrologic...

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  • Geohydrology and Numerical Model Analysis of Ground-Water Flow in the Goose Lake Basin, Oregon and California

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    Geohydrology and Numerical Model Analysis of Ground-Water Flow in the Goose Lake Basin, Oregon and California

    U.S. Geological Survey, Oregon Water Resources Department | December 15, 1988...
    Summary

    From the early 1970s until 1981, ground-water development in the Goose Lake basin underwent rapid growth. The number of new wells constructed and...

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  • Groundwater Resource Management Fundamentals: Groundwater Basin Connectivity

    Groundwater Resource Management Fundamentals: Groundwater Basin Connectivity

    United Water Conservation District | May 14, 2014...
    Summary

    As Ventura County and the rest of the State of California continue to deal with drought conditions there is an increased interest and...

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