Index Catalog // ScholarsArchive@OSU

Arsenic in ground water of the Willamette Basin, Oregon

Creator:: Hinkle, Stephen R., Polette, Danial J., and Oregon. Water Resources Dept., Geological Survey (U.S.)
Abstract:: Arsenic concentrations exceeding the U.S. Environmental Protection Agency (USEPA) current Maximum Contaminant Level (MCL) of 50 micrograms per liter are widespread in ground water in the Willamette Basin. The Oregon Water Resources Department and the U.S. Geological Survey began a cooperative study in the Willamette Basin in 1996. One goal...
Resource Type:: Technical Report
Full Text:: 12,000-square-mile basin in northwestern Oregon Primary drainage is by the Willamette River, but for the

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

Pesticides in southern Willamette Valley groundwater

Creator:: Selker, John S. and Oregon State University. Extension Service
Abstract:: The region’s high winter rainfall provides aquifers that are often within 50 feet of the land surface. In many parts of the United States and in other countries where groundwater is this close to the surface, pesticide contamination has been observed. Thus, with our high population, significant applications of pesticides,...
Resource Type:: Technical Report
Full Text:: Willamette Valley Groundwater • 1 John Selker John Selker, professor of bioengineering, Oregon State

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

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

Input/output energy analysis of regional water pollution control

Creator:: Heggen, Richard J.
Abstract:: Two strategic approaches to water quality control in Oregon's Willamette River are presently being utilized: point source treatment and flow augmentation. Dry weather releases from reservoirs are for authorized purposes other than water quality. Reservoirs can participate in pollution control by summer flow augmentation where authorized water resource objectives (flood...
Resource Type:: Dissertation
Full Text:: . Williamson Two strategic approaches to water quality control in Oregon's Willamette River are presently

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

A sanitary survey of the Willamette River from Sellwood Bridge to the Columbia River

Creator:: Gleeson, George Walter, 1905-
Abstract:: The people of Oregon have become increasingly aware of the constant devaluation of the public waters by unrestricted stream pollution. All of the many uses of natural water have been affected to some degree by the utilization of these same waters as carriers of domestic and industrial wastes. The streams...
Resource Type:: Technical Report
Full Text:: 1. General. The abatement of pollution of the Willamette River has been a matter of concern to many

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

Costs of alternative pollution control policies affecting open field burning in the Willamette Valley of Oregon : a study in measurement

Creator:: Brar, Jagjit Singh
Abstract:: Open field burning is the lowest-cost method of harvest residue disposal used extensively by grass seed producers in the Willamette Valley of Oregon. The beneficial effects of open field burning include effective disease control and increased seed yields. However, smoke produced by open burning in the late summer pollutes valley...
Resource Type:: Dissertation
Full Text:: POLLUTION CONTROL POLICIES AFFECTING OPEN FIELD BURNING IN THE WILLAMETTE VALLEY OF OREGON: A STUDY IN

The effects of land use on mineral flat wetland hydrologic processes in lowland agricultural catchments

Creator:: Marshall, Sarah M.
Abstract:: Hydrologic processes within mineral flat wetlands, along with their connections to groundwater and downstream surface water in lowland agricultural catchments are poorly understood, particularly under different land uses. In the three field studies included in this thesis, we examined infiltration, wetland hydroperiod, groundwater recharge dynamics, surface runoff generation, and water...
Resource Type:: Dissertation
Full Text:: Willamette River lowlands, Oregon………………………………………………………… 3.2 2009-2010 and 2010-2011 water table

1945 progress report on pollution of Oregon streams

Creator:: Oregon State College. Engineering Experiment Station, Merryfield, Fred, 1900-, and Wilmot, Wilbur G.
Resource Type:: Technical Report
Full Text:: Content and Pollution of Willamette River. August 1929 and August-September 1944

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:: construction, can be gleaned from the OWRD Willamette River Basin Report (Oregon Water Resources Department

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

The Willamette River fishes as biological indicators of pollution

Creator:: Noble, Richard Earl
Abstract:: An investigation of the fishes of the Willamette River and three of its larger tributaries was made during July, August, September, and November of 1951, to ascertain the possibility of using them as bio-indices of pollution. Thirteen stations were established on the Willamette River and tributaries. These stations were selected...
Resource Type:: Masters Thesis
Full Text:: Santiam.River; eight on the main stem of the Willamette River from above Eugene to Oregon City; and one on the

Spatial and temporal variations of bioavailable polycyclic aromatic hydrocarbons in the lower Willamette River

Creator:: Sower, Gregory J.
Abstract:: Urban rivers with a history of industrial use can exhibit spatial and temporal variations in contaminant concentrations that may significantly affect risk evaluations and assessment of remediation efforts. To more effectively estimate human and ecological health risks, we evaluated the spatial and temporal distribution of polycyclic aromatic hydrocarbons (PAHs) in...
Resource Type:: Dissertation
Full Text:: remediation assessment (1). The Willamette River in Portland, Oregon, like many urban rivers, has been the

The return of a river: the Willamette River, Oregon

Creator:: Gleeson, George Walter, 1905-
Resource Type:: Technical Report
Full Text:: water quality in the Willamette River . These investiga- tions documented the pollution of the river and

A study of field burning under varying environmental conditions

Creator:: Meland, Bruce Roger
Abstract:: A field study on grass field burning was conducted in the Willamette Valley of Oregon during the summer of 1965. Approximately 243,000 acres of grass fields are burned in the valley during August and September. Serious air pollution problems result from this burning. The purposes of the study were to...
Resource Type:: Masters Thesis
Full Text:: field study on grass field burning was conducted in the Willamette Valley of Oregon during the summer

The fishes of the Willamette river system in relation to pollution

Creator:: Oregon State College. Engineering Experiment Station, Dimick, Roland Eugene, 1900-, and Merryfield, Fred, 1900-
Resource Type:: Technical Report
Full Text:: , Corvallis, Oregon The Fishes of the Willamette River System in Relation to Pollution By R. E. DIMIcK

Bioaccumulation profiles of chemical contaminants in fish from the lower Willamette River, Portland Harbor superfund site and human health risk assessment

Creator:: Sethajintanin, Doolalai
Abstract:: Concentrations of twenty-five PCBs, fifteen organochiorine pesticides and mercury were determined in recreational fish from the Willamette River, Oregon during the summer of 2000. Thirty-six fish samples of three fish species including black crappie, smalimouth bass and con-rn-ion carp were analyzed. The data reported here provides new information and recent...
Resource Type:: Masters Thesis
Full Text:: organochiorine pesticides and mercury were determined in recreational fish from the Willamette River, Oregon

Passive sampling devices as biological surrogates for evaluating seasonal bioavailability of hydrophobic organic contaminants in surface water

Creator:: Sethajintanin, Doolalai
Abstract:: The seasonal distribution of bioavailable organochiorine contaminants in surface water and the potential environmental factors influencing their bioavailability were evaluated. The study was carried at the lower Willamette River at Portland Harbor, Oregon where surface water runoff varied according to season. Bioavailable water concentrations of DDTs and PCBs were determined...
Resource Type:: Dissertation
Full Text:: bioavailability were evaluated. The study was carried at the lower Willamette River at Portland Harbor, Oregon

Stream DOC, nitrate, chloride and SUVA response to land use during winter baseflow conditions in sub-basins of the Willamette River Basin, OR

Creator:: Frentress, Jay
Abstract:: To better understand the impact of land use on stream nutrient export, a synoptic sampling of 57 sub-basins within the Willamette River basin was conducted during winter baseflow conditions (February 2009). I assessed whether stream dissolved organic carbon (DOC), NO₃⁻ and Cl⁻ and specific ultra-violet absorbance (SUVA) values were correlated...
Resource Type:: Masters Thesis

Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

Creator:: del Nero, Zachary Augustus
Abstract:: Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....
Resource Type:: Masters Thesis
Full Text:: been found in public groundwater supplies in the Lower Umatilla Basin of northeastern Oregon. This

Economic evaluation of alternative agricultural resources conservation policies

Creator:: Ogishi, Aya
Abstract:: The agriculture production system in the post-war United States is characterized as highly specialized and increasingly dependent on off-farm inputs. Although the US has traditionally supported agriculture with numerous government commodity programs such as target prices, nonrecourse loans, and deficiency payments, agriculture today is perceived as one of the major...
Resource Type:: Masters Thesis
Full Text:: environment. F-iighly erodible lands in Western Oregon is the study area of this thesis since the

Distribution of bioavailable metals and a human health risk assessment from fish and crayfish in the lower Willamette River, Oregon

Creator:: Krissanakriangkrai, Oraphin
Abstract:: In this study the impact of episodic events on levels of bioavailable trace metals Zn, Cu, Cr, Cd, Pb, and As (III) were determined for the lower Willamette River in Oregon. In addition, a comparison among three alternative methods for estuary sampling was conducted. Potential adverse human health risk associated...
Resource Type:: Dissertation
Full Text:: Willamette River, Oregon Abstract approved: Cathy M. Neumann In this study the impact of episodic events on

Hydrospheric trace elements and their application in tracing water pollutants : final report

Creator:: Loveland, Walter D.
Resource Type:: Technical Report
Full Text:: water system, the Willamette River of western Oregon, and to tes t the conservative nature of the

Potential health hazards associated with the disposal of sewage sludge on agricultural soils in western Oregon

Creator:: Hagedorn, Charles
Resource Type:: Technical Report
Full Text:: on Agriculturol Soils in Western Oregon. by Chorles Hogedorn Woter Resources Reseorch I nstitute

Industrial and city wastes

Creator:: Oregon State College. Engineering Experiment Station, Merryfield, Fred, 1900-, Kachelhoffer, Fred George, 1893-, and Bollen, Walter Beno, 1896-
Resource Type:: Technical Report
Full Text:: of the Willamette River. 5. Present work. This bulletin is a report on the continuation of part of

New Applications for Passive Samplers : In-situ Flux and Risk Assessment of Legacy and Emerging Contaminants

Creator:: Tidwell, Lane G.
Abstract:: Passive sampling devices (PSDs) were used to measure air vapor and water dissolved phase concentrations of polycyclic aromatic hydrocarbons (PAHs) and oxygenated PAHs (OPAHs) at two different environmentally contaminated sites. Environmental contaminates like PAHs and OPAHs are present in both the atmospheric and aqueous environmental compartments. It is known that...
Resource Type:: Dissertation
Full Text:: concentrations and flux rate in Gulf of Mexico......31 Figure 3.1 Sampling locations on the Willamette River

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