Index Catalog // ScholarsArchive@OSU

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Creator:: Mutti, Jeffrey Glenn
Abstract:: Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...
Resource Type:: Masters Thesis
Full Text:: -documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA

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
Full Text:: . 2003. Southern Willamette Valley Groundwater Assessment 2000-2001 Nitrate Study, Final Report. Oregon

An eleven year study of nitrate leaching in vegetable production with winter cover crops

Creator:: Feaga, Jeff
Abstract:: The Willamette Valley of Oregon has high rates of winter precipitation that cause leaching losses of residual fertilizer nitrogen (N) as nitrate (NO₃). Cover crops may have potential to mitigate N loss. Shallow groundwater was sampled for 11 years from plots planted in summer vegetables with and without winter cover...
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

An analysis of well water quality and local residents' perceptions of drinking water quality in the southern Willamette Valley

Creator:: Kite-Powell, Aaron C.
Abstract:: The purpose of this study was to; (1) determine the extent of well water contamination with nitrate and pesticides, and to understand the relationships among nitrate, pesticide, dissolved chloride, dissolved sulfate, well age, and well depth in the southern Willamette Valley, Oregon; and, (2) to investigate local residents' perceptions and...
Resource Type:: Masters Thesis
Full Text:: ). Current data indicate extensive groundwater pollution from nitrate in some areas within this region

Who's afraid of a little nitrate? : discovering impediments and incentives in following best management practices related to water quality within the southern Willamette Valley groundwater management area

Creator:: Rolston, Irene
Abstract:: Thesis summarizes interviews with growers residing within the Groundwater Management Area (GWMA) in the Southern Willamette Valley of Oregon. Informal and semi-structured interviews were used to identify perceived impediments and incentives perceived by local farmers in following best management practices related to water quality. Results from the interviews were coded...
Resource Type:: Masters Thesis
Full Text:: Water Quality within the Southern Willamette Valley Groundwater Management Area. Abstract approved

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:: groundwater nitrate (NO3-) concentrations in the Southern Willamette Valley (SWV) caused the Oregon

Bio-indices of pollution in the Willamette River

Creator:: Deschamps, Gene
Resource Type:: Masters Thesis
Full Text:: Bio-indices of pollution in the Willamette River AN

A study of air pollution potentiality in the Willamette Valley

Creator:: Ramsdell, J. V.
Resource Type:: Masters Thesis
Full Text:: A Study of Air Pollution Potentiality in the Willamette

Agricultural field burning plume rise

Creator:: Azarbaijani, Masoud
Abstract:: Many agricultural fields are burned in the Willamette Valley of Oregon during the summer for economic reasons. A major air pollution problem results from these burnings. The purpose of this study was to develop relations between the maximum plume height and some of the independent variables affecting this plume height,...
Resource Type:: Masters Thesis
Full Text:: agricultural fields are burned in the Willamette Valley of Oregon during the summer for economic reasons. A

ScholarsArchive@OSU

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

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

An eleven year study of nitrate leaching in vegetable production with winter cover crops

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

An analysis of well water quality and local residents' perceptions of drinking water quality in the southern Willamette Valley

Who's afraid of a little nitrate? : discovering impediments and incentives in following best management practices related to water quality within the southern Willamette Valley groundwater management area

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

Bio-indices of pollution in the Willamette River

A study of air pollution potentiality in the Willamette Valley

Agricultural field burning plume rise

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