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  • Analytical determination of copper speciation in Oregon highway runoff

    Creator:
    Sprick, Matthew S.
    Abstract:
    Low concentrations of dissolved copper have been shown to adversely affect the olfactory system of endangered salmonids, impairing their ability to avoid predators and likely increasing predation. It is believed that only the free ionic (Cu2+ free) and weakly complexed forms are bioavailable to organisms; these forms typically account for...
    Resource Type:
    Masters Thesis
    Full Text:
    on December 8, 2009. Title: Analytical Determination of Copper Speciation in Oregon Highway Runoff

  • Statistical analysis and speciation modeling of copper in Oregon highway runoff

    Creator:
    Bloomquist, Don J.
    Abstract:
    Low levels of copper have been shown to impair the olfactory system of threatened and endangered (T&E) salmon, decreasing their predator avoidance behavior and likely increasing mortality. However, only dissolved copper (dissCu) present as the cupric ion (Cu2+) and weakly complexed species are truly bioavailable. Previous studies indicate the vast...
    Resource Type:
    Masters Thesis
    Full Text:
    Oregon Highway Runoff By Don J. Bloomquist A THESIS Submitted to Oregon State University

  • Measurement and modeling the physical controls of snowmelt in the Pacific Northwest

    Creator:
    Mazurkiewicz, Adam B.
    Abstract:
    The physical controls of snowmelt in the Pacific Northwest (PNW) are poorly understood. While there have been numerous field and modeling investigations at the plot and watershed scale, few studies have identified how the snow energy balance (EB) components vary in importance both spatially and temporally. The identification of how...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS submitted to Oregon State University in partial fulfillment of the

  • 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
    Full Text:
     McKenzie  River  Basin  located  in  the   central-­‐western  Cascades  of  Oregon

  • Sediment Transport Prototypes : Novel Methods to Disconnect Forest Roads from Streams

    Creator:
    Kemp, Erica D.
    Abstract:
    Unpaved roads are a critical form of infrastructure in forested landscapes but also a potential source of fine sediment that can degrade sensitive ecosystems nearby. Improved management of aggregate road surfacing can reduce sediment generation, lengthen its useful life span, reduce maintenance costs, and more importantly, mitigate the impacts of...
    Resource Type:
    Masters Thesis
    Full Text:
    Oregon Coast Range. ISCO pump samplers were 8 programmed to sample ditch runoff when rainfall

  • Precipitation-snowmelt timing and snowmelt augmentation of large peak flow events, western Cascades, Oregon

    Creator:
    Jennings, Keith S.
    Abstract:
    Despite advances in the understanding of rain-on-snow storms and their resulting peak flows, little is understood about the response of snowmelt to precipitation and the relative timing of the two at multiple temporal scales within such events. To address this issue, climate, snowmelt, and streamflow data were analyzed for 26...
    Resource Type:
    Masters Thesis
    Full Text:
    Large Peak Flow Events, Western Cascades, Oregon

  • Water quality of runoff from flood irrigated pasture in the Klamath Basin, Oregon

    Creator:
    Ciotti, Damion C.
    Abstract:
    Runoff from agricultural lands into Upper Klamath Basin rivers and lakes can cause water quality problems affecting fish and wildlife. Excessive eutrophication in Upper Klamath Lake is linked to high nutrient input (particularly phosphorus) stemming from both lake sediments and watershed tributaries. On a unit area load basis the Wood...
    Resource Type:
    Masters Thesis
    Full Text:
    , 2004 93 WATER QUALITY OF RUNOFF FROM FLOOD IRRIGATED PASTURE IN THE KLAMATH BASIN, OREGON

  • The role of bedrock groundwater in rainfall-runoff response at hillslope and catchment scales

    Creator:
    Gabrielli, Christopher P.
    Abstract:
    Bedrock groundwater dynamics in headwater catchments are poorly understood and poorly characterized. Direct hydrometric measurements have been limited due to the logistical challenges associated with drilling through hard rock in steep, remote and often roadless terrain. Here we develop and use an inexpensive, portable bedrock drilling system to explore bedrock...
    Resource Type:
    Masters Thesis
    Full Text:
    runoff. We present results from Watershed 10 (WS10) at the HJ Andrews Experimental Forest in Oregon

  • 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