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  • Taming the Tumalo : A Damned Dam Repurposed for Recharge

    Creator:
    Harpham, Kelsey
    Abstract:
    The Tumalo Project at Tumalo Reservoir in Central Oregon was proclaimed a failure almost as soon as it was completed. As the reservoir filled with water diverted from Tumalo creek in the spring of 1915, sinkholes developed in the reservoir floor and every last drop of captured water disappeared into...
    Resource Type:
    Masters Thesis
    Full Text:
    : Taming the Tumalo: A Damned Dam Repurposed for Recharge Abstract approved: William Todd Jarvis The

  • 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:
    much for always welcoming me and for sharing the magic that is the HJ Andrews. Thank you to Todd

  • Headwater stream characterization : an energy and physical approach to stream temperature using distributed temperature sensing

    Creator:
    Roth, Travis R.
    Abstract:
    Headwater streams are an integral part of the ecological health of the greater stream network as they provide valuable biological habitat, provide upwards to 95% of total in channel flow, while providing downstream reaches with important constituents such as sediment and woody debris. Small headwater streams are particularly susceptible to...
    Resource Type:
    Masters Thesis
    Full Text:
    % (Montgomery and Foufoula- Georgiou, 1993; Woods et al., 1995; May and Gresswell; 2004). The formation of

  • Stream channel stability and sensitivity to landscape history and land use changes in Kelley Creek, Portland, Oregon

    Creator:
    Murphy, Yarrow M.
    Abstract:
    This study examines stream channel erosion processes in a small urbanizing watershed influenced by deposits of the Columbia Basin catastrophic floods: Kelley Creek, a 12-km² tributary of Johnson Creek, located just east of Portland, Oregon. Information on landscape history, stream channels, and sediment dynamics was compiled. The effects of future...
    Resource Type:
    Masters Thesis
    Full Text:
    between SC and Cd is approximated with equation 3 (Todd and Mays 2005). 25 �� ��/�� � �� μ

  • Regional Scale Modeling of Climate, Cryosphere, and Freshwater Discharge in Changing Coastal Mountain Environments

    Creator:
    Beamer, Jordan P.
    Abstract:
    The glaciated coastal mountain watersheds that drain into the Gulf of Alaska (GOA) provide a model laboratory to explore the challenges of hydrological modeling and study the impact of climate and glacier cover change on regional hydrology. The region is data-sparse and contains a complex assemblage of topography and land...
    Resource Type:
    Dissertation
    Full Text:
    the memory of my brother Todd (1968-1997) and grandpa Merlin (1935-2013). 1

  • Addressing Data Resolution in Precision Agriculture

    Creator:
    Kelley, Jason
    Abstract:
    Irrigated agriculture constitutes the greatest consumptive water use globally, so that irrigation efficiency measures are an important part of global efforts to best utilize this limited resource. However, greater irrigation efficiency must be achieved while simultaneously maintaining or increasing crop yields and farming profitability. Incremental water use decisions are made...
    Resource Type:
    Dissertation
    Full Text:
    . Shona and John Trumbly and Wanda Montgomery told me that I could and better do it. Diane Kelley