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Filtering by: Committee Member Wildenschild, Dorthe Subject Hydrogeology -- Oregon -- Willamette River Valley

Quantification of the nitrate attenuation capacity of low-permeability Missoula Flood deposits in the Willamette Valley of Oregon

Creator:

Arighi, Louis M.

Abstract:

Low-permeability geologic units may offer significant chemical and hydraulic protection of adjacent aquifers, and are important for managing groundwater quality, especially in areas with significant non-point source contamination. Nitrate in the Willamette Valley is attenuated across the Willamette Silt, a semi-confining unit overlying a regionally important aquifer. To quantify the...

Resource Type:

Masters Thesis
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