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Filtering by: Subject Runoff Remove constraint Subject: Runoff Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Evaluating Biochar for the Sustainable Treatment of Heavy Metals in Stormwater: Characteristics, Mechanisms, and Barriers

    Creator:
    Burch, Sarah
    Abstract:
    Heavy metals, such as copper, zinc, and cadmium, are ubiquitous in stormwater and potentially toxic to aquatic organisms at low concentrations. Removal of heavy metals contamination by conventional treatment is expensive and does not always reduce metals concentrations low enough to ensure safety of all aquatic species. This research seeks...
    Resource Type:
    Dissertation
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    pollutants in stormwater runoff and can be toxic to aquatic organisms at very low dissolved concentrations

  • The role of near-stream zones on flow, chemistry and isotopic composition at the headwater scale

    Creator:
    Frentress, Jay
    Abstract:
    Stream discharge is a key water balance component and important factor in global change evaluations. Nevertheless, the mechanisms for streamflow generation are poorly understood. Near- stream surface saturation during precipitation events is one of the most iconic, visible indicators of rapid runoff production in upland humid catchments around the world....
    Resource Type:
    Dissertation
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    indicators of rapid runoff production in upland humid catchments around the world. Despite years of

  • Characterization of hydrologic parameters and processes in shrink-swell clay soils

    Creator:
    Stewart, Ryan D.
    Abstract:
    Vertisols and other vertic-intergrade soils are found all over the globe, including many agricultural and urban areas. These soils are characterized by their cyclical shrinking and swelling behaviors, where bulk density and porosity distribution both vary as functions of time and/or soil moisture. In turn, alterations in physical soil parameters...
    Resource Type:
    Dissertation
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    and runoff may be strongly correlated with the cumulative amount of net precipitation that had

  • Climate change impacts on mountain snowpack presented in a knowledge to action framework

    Creator:
    Sproles, Eric A.
    Abstract:
    Throughout many of the world’s mountain ranges snowpack accumulates during the winter and into the spring, providing a natural reservoir for water. As this reservoir melts, it fills streams and recharges groundwater for over 1 billion people globally. Despite its importance to water resources, our understanding of the storage capacity...
    Resource Type:
    Dissertation
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    .........................................125     Figure  3.8:  Temporal  centroid  for  water  available  for  runoff

  • Water residence time and runoff generation in the western Cascades of Oregon

    Creator:
    McGuire, Kevin J.
    Abstract:
    The age, or residence time of water is a fundamental descriptor of catchment hydrology, revealing information about the storage, flow pathways and source of water in a single integrated measure. While there has been tremendous recent interest in residence time to characterize catchments, there are few studies that quantify residence...
    Resource Type:
    Dissertation

  • Reducing sediment production from forest roads during wet-weather use

    Creator:
    Toman, Elizabeth Myers
    Abstract:
    Forest roads produce fine sediment with traffic during wet weather. If the forest road is connected to a stream it can be a source of turbidity and fine sediment that may be detrimental to aquatic organisms especially salmonids. The goal of this work was to investigate turbid runoff during wet-weather...
    Resource Type:
    Dissertation
    Full Text:
    especially salmonids. The goal of this work was to investigate turbid runoff during wet-weather use from