Index Catalog // ScholarsArchive@OSU

Nitrate leaching and model evaluation under winter cover crops

Creator:: Minshew, Hudson F.
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Soil Science presented on November 11, 1998. Title: Nitrate Leaching and

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:: Survey, the Oregon Department of Environmental Quality, and ChevronTexaco. TABLE OF CONTENTS

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:: Oregon Abstract approved: Roy D. Haggerty Groundwater nitrate contamination is a well

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Creator:: Sobota, Daniel J.
Abstract:: Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...
Resource Type:: Dissertation
Full Text:: . Title: Linkages among Land Use, Riparian Zones, and Uptake and Transformation of Nitrate in Stream

Assessment of public awareness of septic systems in rural Benton County

Creator:: Gillett, Christopher S.
Abstract:: The primary objective of this study was two-fold: (1) to assess home owners awareness about issues pertaining to their septic systems; (2) and to determine the effect climate, proper care and maintenance have on septic tank performance in rural Benton County. Participants in this study were randomly selected by Benton...
Resource Type:: Masters Thesis
Full Text:: LITERATURE 7 2.1 History 7 2.2 Benton County septic systems 8 2.3 Current regulations in Oregon and

Analysis of Oregon's Domestic Well Testing Act data for use in a sentinel surveillance system for private well contaminants

Creator:: Hoppe, Brenda O.
Abstract:: The Safe Drinking Water Act ensures that public systems provide water that meets health standards. However, no such protection exists for millions of Americans who obtain water from private wells. Concern for safety is warranted as most wells draw from underground aquifers, and studies demonstrate that groundwater is affected by...
Resource Type:: Dissertation
Full Text:: – INTRODUCTION………………………………................. 1 Private Wells and Nitrate Contamination in Oregon………………… 8

West Nile Virus preparedness in Multnomah County : efficacy, benefits, and limitations of adulticide use for mosquito-borne disease

Creator:: Francis, Kristin A.
Abstract:: The objectives of this study were to provide a comprehensive review of the risks and benefits of using adulticides to reduce risk of mosquito-borne disease (particularly West Nile Virus) transmission to humans, as well as to decrease annoyance from nuisance mosquitoes. The study was designed with two major research components,...
Resource Type:: Masters Thesis
Full Text:: study is performed in conjunction with the Health Department of Multnomah County, Oregon, to assist in

Sediment Pulse Behavior in Gravel-bedded Rivers

Creator:: Pace, Kylie M.
Abstract:: As dams approach the end of their useful life, there is need to predict where and how accumulated sediment will move following their removal to estimate impacts on aquatic habitat and infrastructure. Flume studies suggest that sediment pulses disperse in place for most dams, but it is hypothesized that a...
Resource Type:: Masters Thesis
Full Text:: .!Pace! ! ! ! ! A!THESIS! ! submitted!to! ! Oregon!State!University! ! ! ! ! in!partial

How clean is coal : coal power plant ash pond regulations compared to nuclear reactor decommissioning standards

Creator:: Williams, Manuel P.
Abstract:: Coal power is the prominent source of energy in the United States (U.S.) and around the world. The byproducts of coal power contain many of the same radioactive nuclides that are found in the local environment just in higher concentrations. With so much of this ash being stockpiled, the amount...
Resource Type:: Masters Thesis
Full Text:: ............................................................................... 13 Figure 9: Morrow County in Oregon

Stream channel stability and sensitivity to landscape history and land use changes in Kelley Creek, Portland, Oregon

Creator:: Murphy, Yarrow M.
Abstract:: This study examines stream channel erosion processes in a small urbanizing watershed influenced by deposits of the Columbia Basin catastrophic floods: Kelley Creek, a 12-km² tributary of Johnson Creek, located just east of Portland, Oregon. Information on landscape history, stream channels, and sediment dynamics was compiled. The effects of future...
Resource Type:: Masters Thesis
Full Text:: Landscape History and Land Use Changes in Kelley Creek, Portland, Oregon. Abstract approved

ScholarsArchive@OSU

Nitrate leaching and model evaluation under winter cover crops

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

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

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Assessment of public awareness of septic systems in rural Benton County

Analysis of Oregon's Domestic Well Testing Act data for use in a sentinel surveillance system for private well contaminants

West Nile Virus preparedness in Multnomah County : efficacy, benefits, and limitations of adulticide use for mosquito-borne disease

Sediment Pulse Behavior in Gravel-bedded Rivers

How clean is coal : coal power plant ash pond regulations compared to nuclear reactor decommissioning standards

Stream channel stability and sensitivity to landscape history and land use changes in Kelley Creek, Portland, Oregon

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search