Index Catalog // ScholarsArchive@OSU

Monitoring of groundwater and surfacewater interactions on the Walla Walla River, Oregon for the purpose of restoring in-stream flows for ESA listed fish habitat

Creator:: Metcalf, Becky Elise
Abstract:: In an effort to restore summer flows in the Walla Walla River to provide passage and habitat for ESA (endangered species act) listed bull and steelhead trout irrigation districts left 13 cubic-feet-per-second (c.f.s) (0.37 m ³/s) in the main channel during irrigation season (May-November) for the first time in over...
Resource Type:: Masters Thesis

Chemical and isotopic patterns of nitrate variability in the southern Willamette Valley, Oregon

Creator:: Vick, Christopher Flanders
Abstract:: A relatively stable, persistent and historical problem with elevated NO₃⁻ concentrations in rural drinking wells in the southern Willamette Valley, Oregon is evident. What is the origin of NO₃⁻ in rural drinking water wells in this area? The answer to the question is not simple. Many non-point sources contribute to...
Resource Type:: Masters Thesis

Hydraulic predictors and seasonal distribution of Manayunkia speciosa density in the Klamath River, CA, with implications for ceratomyxosis, a disease of salmon and trout

Creator:: Jordan, Michelle S.
Abstract:: The freshwater polychaete Manayunkia speciosa was identified as an obligate host of the salmonid parasite Ceratomyxa shasta in 1997, prompting increased research on the small benthic invertebrate. Ceratomyxa shasta infection in fish can cause mortality, and presents a disease risk for both hatchery and wild salmon and trout. Ceratomyxa shasta...
Resource Type:: Masters Thesis
Full Text:: benthic invertebrates in gravel-bed rivers. River Research and Applications, 19(5-6), 495-507

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Creator:: Stewart, Ryan D.
Abstract:: The Clean Water Act imposes Total Maximum Daily Load (TMDL) limits on pollutant concentrations within wastewater effluent; in Oregon, thermal discharge is one of the pollutants subject to regulation. The City of Woodburn, Oregon, funded a series of pilot scale studies to investigate the utility of natural systems to reduce...
Resource Type:: Masters Thesis
Full Text:: approved: John S. Selker The Clean Water Act imposes Total Maximum Daily Load (TMDL) limits

Temperature and infiltration characterization of a constructed wetland for wastewater treatment

Creator:: Gregory, Christopher T.
Abstract:: The City of Woodburn, Oregon's Wastewater Treatment Plant (WWTP) has been investigating several natural alternatives for improving effluent quality. Based on its current National Pollution Discharge Elimination System (NPDES) permit, the WWTP will require additional reduction of temperature and ammonia levels in the summer, especially in the critical month of...
Resource Type:: Masters Thesis
Full Text:: Wastewater Treatment Abstract approved: John S. Selker

A GIS study of Benton County, Oregon, groundwater : Spatial distributions of selected hydrogeologic parameters

Creator:: Miles, Evan S.
Abstract:: Benton County has experienced substantial growth in the past 30 years, and is expected to continue growing (BCWP 2008). Continued development has occurred in the Willamette Valley, housing development in the nearby hills of the Coast Range is growing. New houses in the foothills of the Coast Range may not...
Resource Type:: Masters Thesis

Hydrology and geomorphic evolution of basaltic landscapes, High Cascades, Oregon

Creator:: Jefferson, Anne (Anne Jarvis)
Abstract:: The basaltic landscapes of the Oregon High Cascades form a natural laboratory for examining how geologic setting and history influence groundwater flowpaths, streamflow sensitivity to climate, and landscape evolution. In the High Cascades, highly permeable young basaltic lavas form extensive aquifers. These aquifers are the dominant sources of summer streamflow...
Resource Type:: Dissertation
Full Text:: diversion tunnel McKenzie River Basin, Oregon, 4 pp, U.S. Geological Survey, Washington. Scholl, M. A., S

Investigation of the hydraulic, physical, and chemical buffering capacity of Missoula Flood Deposits for water quality and supply in the Willamette Valley of Oregon

Creator:: Iverson, Justin
Abstract:: The Willamette Silt is a surficial geologic unit composed of successive Missoula Flood Deposits that underlies 3100 km2 (1200 mil) of arable land in the Willamette Valley of Oregon. The Willamette Silt protects the underlying regionally important Willamette Aquifer from agricultural contamination while acting as a semi-confining unit and a...
Resource Type:: Masters Thesis
Full Text:: groundwater in the Willamette Silt (WS) at the field area flows at approximately 5.6x10 -7 m/s at a dip of 60

Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

Creator:: Stewart, Gregory B.
Abstract:: Dam removal is increasingly viewed as a river restoration tool because dams affect so many aspects of river hydrology, geomorphology, and ecology; but removal also has impacts. When a dam is removed, sediment accumulated over a dam’s lifetime may be transported downstream; and the timing, fate and consequences of this...
Resource Type:: Dissertation
Full Text:: dam removal should be viewed as a river restoration tool (American Rivers, 1999; Pejchar and Warner

Fate of THMs in Columbia River basalts during aquifer storage and recovery

Creator:: Bertrand, Danelle
Abstract:: Use of basalt aquifers for aquifer storage and recovery (ASR) systems is increasing in the Pacific Northwest due to the large aerial extent of the Columbia River Basalt Group and the suitability of basalts as ASR reservoirs. However, the degradation of trihalomethanes (THMs), potentially carcinogenic disinfection by-products present in the...
Resource Type:: Masters Thesis
Full Text:: THMs in Columbia River Basalts During Aquifer Storage and Recovery Abstract approved

ScholarsArchive@OSU

Monitoring of groundwater and surfacewater interactions on the Walla Walla River, Oregon for the purpose of restoring in-stream flows for ESA listed fish habitat

Chemical and isotopic patterns of nitrate variability in the southern Willamette Valley, Oregon

Hydraulic predictors and seasonal distribution of Manayunkia speciosa density in the Klamath River, CA, with implications for ceratomyxosis, a disease of salmon and trout

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Temperature and infiltration characterization of a constructed wetland for wastewater treatment

A GIS study of Benton County, Oregon, groundwater : Spatial distributions of selected hydrogeologic parameters

Hydrology and geomorphic evolution of basaltic landscapes, High Cascades, Oregon

Investigation of the hydraulic, physical, and chemical buffering capacity of Missoula Flood Deposits for water quality and supply in the Willamette Valley of Oregon

Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

Fate of THMs in Columbia River basalts during aquifer storage and recovery

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