streams

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  • A Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States: A Delineation Manual

    A Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States: A Delineation Manual

    U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory | August 1, 2008...
    Summary

    The Ordinary High Water Mark (OHWM) is an approach for identifying the lateral limits of non-wetland waters. However, determining whether any non-wetland water...

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  • A Guide to Ordinary High Water Mark (OHWM) Delineation for Non-Perennial Streams in the Western Mountains, Valleys, and Coast Region of the United States

    A Guide to Ordinary High Water Mark (OHWM) Delineation for Non-Perennial Streams in the Western Mountains, Valleys, and Coast Region of the United States

    U.S. Army Corps of Engineers (USACE) | August 14, 2014...
    Summary

    Federal regulations define the ordinary high water mark (OHWM) as “that line on the shore established by the fluctuations of water and indicated...

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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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  • 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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  • Biology-based Stressor Thresholds

    Biology-based Stressor Thresholds

    California State Water Resources Control Board | October 1, 2011...
    Summary

    The objective of this memo is to describe how biological assessment data (such as those collected using Surface Water Ambient Monitoring Program (SWAMP)...

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  • California Non-point Source Program Implementation Plan 2014 – 2020

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    California Non-point Source Program Implementation Plan 2014 – 2020

    California State Water Resources Control Board | August 5, 2015...
    Summary

    The 2014 - 2020 California Nonpoint Source (NPS) Program Implementation Plan (NPS Program Implementation Plan) describes how the State will be using its...

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  • Ecological Condition Assessments of California’s Perennial Wadeable Streams (2000 through 2006)

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    Ecological Condition Assessments of California’s Perennial Wadeable Streams (2000 through 2006)

    California State Water Resources Control Board | October 15, 2007...
    Summary

    The struggle to adequately monitor the condition of waterbodies with limited financial resources is a challenge faced by water resource agencies worldwide. For...

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  • Ecological Condition Assessments of California’s Perennial Wadeable Streams: Highlights from the Surface Water Ambient Monitoring Program’s Perennial Streams Assessment (PSA ) (2000-2007)

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    Ecological Condition Assessments of California’s Perennial Wadeable Streams: Highlights from the Surface Water Ambient Monitoring Program’s Perennial Streams Assessment (PSA ) (2000-2007)

    California State Water Resources Control Board | October 1, 2011...
    Summary

    Since 2000, California has conducted three successive probability surveys of its perennial streams and rivers, each with a focus on biological endpoints. These...

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  • Ecological Health in the Nation’s Streams, 1993–2005

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    Ecological Health in the Nation’s Streams, 1993–2005

    U.S. Geological Survey (USGS) | July 2, 2013...
    Summary

    This report summarizes a national assessment of the ecological health of streams done by the U.S. Geological Survey's (USGS) National Water-Quality Assessment Program...

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