Index Catalog // ScholarsArchive@OSU

Groundwater flow model for the lower Malheur Basin near Ontario, Oregon

Creator:: Walker, David S.
Abstract:: The shallow, poorly-confined, sand and gravel aquifer underlying the lower Malheur River basin is contaminated by nitrate and metabolites of the herbicide dimethyl tetrachloroterephthalate (DCPA), first detected in 1983 and 1985, respectively. The aquifer supplies water for the Ontario municipal water system, domestic and industrial uses, and irrigation. In response...
Resource Type:: Masters Thesis
Full Text:: . Groundwater Flow Model for the Lower Malheur Basin Near Ontario, Oregon by David S. Walker A THESIS

Market water transfers as a water quality policy : a case study of the Malheur River Basin, Oregon

Creator:: Connor, Jeffery D.
Abstract:: Agronomic research documents a strong correlation between the level of irrigation water applied and the level of farm chemicals leached into water bodies. Consequently, policies that cause farmers to alter irrigation water management practices are likely to influence water quality. Water markets are a potentially attractive method of addressing agriculturally...
Resource Type:: Dissertation
Full Text:: watershed has been designated as a critical groundwater area by the State of Oregon (Maihuer County

Quality of shallow ground water in alluvial aquifers of the Willamette Basin, Oregon, 1993-95

Creator:: Hinkle, Stephen R., National Water-Quality Assessment Program (U.S.), and Geological Survey (U.S.)
Abstract:: The purposes of this report are to describe the quality of shallow ground water in alluvial aquifers of the Willamette Basin and to identify relationships between shallow ground-water quality and various natural and anthropogenic factors. Several natural and anthropogenic factors (soil characteristics, cumulative thickness of clay above open interval of...
Resource Type:: Technical Report

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Creator:: Craner, Jeremy D.
Abstract:: Elevated groundwater nitrate (NO3 -) concentrations in the Southern Willamette Valley (SWV) caused the Oregon Department of Environmental Quality (ODEQ) to declare a Groundwater Management Area (GWMA) in Spring, 2004. To better understand direction of groundwater flow, groundwater age, and nitrate transport pathways of the SWV we developed a steady-state...
Resource Type:: Masters Thesis
Full Text:: Hydrogeologic Field Investigation and Groundwater Flow Model of the Southern Willamette Valley, Oregon by

Flux of ground water and nitrogen through the floodplain of a fourth-order stream

Creator:: Wondzell, Steve
Abstract:: Changes in the concentrations of dissolved ammonia (NH4+1), nitrate (NO3-1), organic nitrogen (DON) were monitored along ground water flow paths to determine the importance of the ground water system to the stream nitrogen budget. The study site was located on a wide floodplain along a fourth-order stream in the Oregon...
Resource Type:: Dissertation

Patterns in stream geomorphology and implications for hyporheic exchange flow

Creator:: Anderson, Justin K.
Abstract:: Longitudinal water surface profiles from high-gradient mountain streams provide useful indicators of the relative potential for hyporheic exchange flow in stream reaches with varying morphology. The spacing between slope breaks in step-pool and pool-riffle streams provides a geomorphic scaling metric that indicates how the length of average hyporheic flow paths...
Resource Type:: Masters Thesis

Shallow aquifer storage and recovery (SASR): Regional management of underground water storage in hydraulically connected aquifer-stream systems

Creator:: Neumann, Philip E.
Abstract:: A novel mode of shallow aquifer management could increase the volumetric potential and distribution of underground, freshwater storage: Shallow aquifer storage and recovery (SASR). In this mode, water is efficiently stored in basin fill aquifers with strong hydraulic connection to surface water. Regional numerical modeling can provide a linkage between...
Resource Type:: Masters Thesis
Full Text:: - difference, groundwater flow model (MODFLOW) developed by the U.S. Geological Survey (USGS). The model

Streamside forests, channel constraint, large woody debris characteristics, and pool morphology in low order streams, Blue Mountains, Oregon

Creator:: Cordova, Jerry J.
Resource Type:: Masters Thesis
Full Text:: located in eastern Oregon in the John Day and Malheur River basins in the southern portion of the Oregon

Surface Water and Groundwater Interactions in the Walla Walla River, Northeast Oregon, USA : A Multi-Method Field-Based Approach

Creator:: Gryczkowski, Landon
Abstract:: Surface water and groundwater interactions are a key component in the functioning of stream ecosystems. Exchange of water between the stream and the hyporheic zone creates habitat for aquatic organisms and serves as a control for stream biogeochemical, thermal, and flow processes. This study takes a multi-method field-based approach to...
Resource Type:: Dissertation
Full Text:: River, Northeast Oregon, USA: A Multi-Method Field-Based Approach AN ABSTRACT OF THE

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:: feasibility study for groundwater recharge at the Tumalo site demonstrates iii the likely flow path of

ScholarsArchive@OSU

Groundwater flow model for the lower Malheur Basin near Ontario, Oregon

Market water transfers as a water quality policy : a case study of the Malheur River Basin, Oregon

Quality of shallow ground water in alluvial aquifers of the Willamette Basin, Oregon, 1993-95

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Flux of ground water and nitrogen through the floodplain of a fourth-order stream

Patterns in stream geomorphology and implications for hyporheic exchange flow

Shallow aquifer storage and recovery (SASR): Regional management of underground water storage in hydraulically connected aquifer-stream systems

Streamside forests, channel constraint, large woody debris characteristics, and pool morphology in low order streams, Blue Mountains, Oregon

Surface Water and Groundwater Interactions in the Walla Walla River, Northeast Oregon, USA : A Multi-Method Field-Based Approach

Taming the Tumalo : A Damned Dam Repurposed for Recharge

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