Index Catalog // ScholarsArchive@OSU

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

An investigation of alternative means of achieving water quality objectives

Creator:: Kerri, Kenneth Donald
Abstract:: Storage of water for water quality control is one of the alternative means of achieving water quality objectives. Authorities in the field of water quality management disagree regarding the use of precious water for the dilution of wastes. The costs of achieving water quality objectives by treatment of wastes at...
Resource Type:: Dissertation
Full Text:: . Different levels of water quality and fluctuating flows of the Willamette River in Oregon during the 1963

Optimizing Reservoir Operations to Adapt to 21st Century Expectations of Climate and Social Change in the Willamette River Basin, Oregon

Creator:: Moore, Kathleen M.
Abstract:: Reservoir systems in the western US are managed to serve two main competing purposes: to reduce flooding during the winter and spring, and to provide water supply for multiple uses during the summer. Because the storage capacity of a reservoir cannot be used for both flood damage reduction and water...
Resource Type:: Dissertation
Full Text:: 21 st Century Expectations of Climate and Social Change in the Willamette River Basin, Oregon

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:: study reaches in the Willamette River basin, Oregon, USA………………………………………………………………..15

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:: surface water at the lower Willamette River at Portland Harbor, Oregon, using passive sampling device (n

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

Social Learning and Adaptive Capacity in Collaborative Watershed Partnerships

Creator:: Calvert, Daniel T.
Abstract:: This dissertation examines learning driven adaptations in salmon recovery efforts and water resources management in Oregon. The case study utilizes a framework highlighting the connections between human and natural systems. Semi-structured interviews are used to analyze interactions between rural riparian landowners and watershed council staffs living and working in Oregon’s...
Resource Type:: Dissertation
Full Text:: landowners and watershed council staffs living and working in Oregon’s Upper Willamette River basin

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

Benthic algal flora of four rivers of the middle Willamette River Basin

Creator:: Todd, Leona Esther
Abstract:: Fresh-water benthic river algae were collected from selected sites in Willamette River tributaries; two sampling sites were in the Yamhill River system and four sampling sites were in the Santiam River system. Twelve samples were taken at each collection site in the Yamhill River system at approximately monthly intervals from...
Resource Type:: Dissertation
Full Text:: Willamette River Basin Table 1. River lengths and gradients (data from the Oregon State Water Resources

The application of spatial data analysis and visualization in the development of landscape indicators to assess stream conditions

Creator:: Buckley, Aileen R.
Abstract:: The main theme of this research is the application of geographic techniques in a study involving environmental monitoring and analysis of the associations between landscape and in-stream characteristics in the Pacific Northwest. The geographic techniques used in this study include (1) geographic information systems (GIS) coupled with statistical analysis and...
Resource Type:: Dissertation
Full Text:: sampling sites and their respective watersheds in the Willamette River Basin of western Oregon. The

ScholarsArchive@OSU

Input/output energy analysis of regional water pollution control

An investigation of alternative means of achieving water quality objectives

Optimizing Reservoir Operations to Adapt to 21st Century Expectations of Climate and Social Change in the Willamette River Basin, Oregon

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

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

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

Social Learning and Adaptive Capacity in Collaborative Watershed Partnerships

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

Benthic algal flora of four rivers of the middle Willamette River Basin

The application of spatial data analysis and visualization in the development of landscape indicators to assess stream conditions

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