Index Catalog // ScholarsArchive@OSU

Assessment of ground water recharge and quality under agricultural production in Lane County, Oregon

Creator:: Shelby, Patrick M.
Abstract:: Assessment of the environmental impacts of an agricultural production system requires information on both soil water quality and solute flux. Passive Capillary Samplers (PCAPS), which sample water from the vadose zone using fiber glass wicks, have shown potential to provide both flux and solute concentration in unsaturated zone sampling but...
Resource Type:: Masters Thesis
Full Text:: agricultural production in Lane County, Oregon AN ABSTRACT OF THE THESIS OF Patrick M. Shelby for the degree

Optimizing Placement of Weather Stations: Defining and Testing a Meaningful Objective for Multi-Variable Weather Monitoring Networks

Creator:: Snyder, Amelia M.
Abstract:: As the number of weather stations declines globally, ensuring that meteorological monitoring networks efficiently and effectively monitor weather variables becomes increasingly important. Multi-variable weather sensors are becoming more widely available and make monitoring weather phenomena more economical. However, when seeking an optimal spatial distribution of these stations, choosing an objective...
Resource Type:: Masters Thesis
Full Text:: by Amelia Snyder A THESIS submitted to Oregon State

Preventing the Accumulation of Fine Sediments in Sand Dam Reservoirs: An Analytical Framework and Flume Experiments

Creator:: Ellingson, Joseph M.
Abstract:: Sand dams – low-head dams built in ephemeral streambeds that store water within saturated sediments – are a proven means to increase water supplies for rural communities in arid and semiarid regions. Water percolates into the reservoir-impounded sediments during wet season rains and can subsequently be extracted during the dry...
Resource Type:: Masters Thesis
Full Text:: Joe Ellingson A THESIS submitted to Oregon State University in partial

Field evaluation of passive capillary samplers in monitoring the leaching of agrochemicals

Creator:: Brandi-Dohrn, Florian M.
Abstract:: Soil solution samplers have certain inadequacies that limit their range of possible applications. Passive Capillary Samplers (PCAPS), which apply suction to the soil pore-water via a fiber glass wick, have shown promising results in preliminary experiments in regard to collection efficiency of water and of bromide tracers. The objectives of...
Resource Type:: Masters Thesis
Full Text:: experiment was carried out at the North Willamette Research and Experiment Center (NWREC) in Western Oregon

Peppermint irrigation and nitrogen management for the reduction of nitrate loading to groundwater

Creator:: Smesrud, Jason K.
Abstract:: The agricultural production of peppermint has been shown to contribute significant quantities of nitrate-nitrogen to groundwater recharge. In an effort to provide new tools for increasing nitrogen efficiency within peppermint production, three research questions were proposed: i) How should plant tissue samples be collected to achieve the greatest precision when...
Resource Type:: Masters Thesis
Full Text:: . Peppermint Tissue Analysis - Nitrogen. Univ. of Idaho, Cooperative Extension Service Agricultural Experiment

Assessment of variability and monitoring methods for leaching under cover crop management

Creator:: Hess, Mario
Abstract:: The contamination of ground water resources represents a serious problem and a prominent threat to the health of our society. This study focuses on the leaching of inorganic anions as a function of agricultural practices under natural field conditions. In order to enhance the understanding of such leaching processes, this...
Resource Type:: Masters Thesis
Full Text:: . Summary of data from the local climate station at the NWREC 1963 - 1990 (courtesy of the Oregon Climate

Temperature and infiltration characterization of a constructed wetland for wastewater treatment

Creator:: Gregory, Christopher T.
Abstract:: The City of Woodburn, Oregon's Wastewater Treatment Plant (WWTP) has been investigating several natural alternatives for improving effluent quality. Based on its current National Pollution Discharge Elimination System (NPDES) permit, the WWTP will require additional reduction of temperature and ammonia levels in the summer, especially in the critical month of...
Resource Type:: Masters Thesis
Full Text:: by Christopher T. Gregory A THESIS submitted to Oregon State

Surface Water and Groundwater Interactions in the Walla Walla River, Northeast Oregon, USA : A Multi-Method Field-Based Approach

Creator:: Gryczkowski, Landon
Abstract:: Surface water and groundwater interactions are a key component in the functioning of stream ecosystems. Exchange of water between the stream and the hyporheic zone creates habitat for aquatic organisms and serves as a control for stream biogeochemical, thermal, and flow processes. This study takes a multi-method field-based approach to...
Resource Type:: Dissertation
Full Text:: River, Northeast Oregon, USA: A Multi-Method Field-Based Approach AN ABSTRACT OF THE

Improving soil water determination in spatially variable field using fiber optic technology and Bayesian decision theory

Creator:: Sayde, Chadi
Abstract:: Achieving and maintaining sustainability in irrigated agriculture production in the era of rapidly increasing stress on our natural resources require, among other essential actions, optimum control and management of the applied water. Thus, a significant upgrade of the currently available soil water monitoring technologies is needed. The primary goal of...
Resource Type:: Dissertation
Full Text:: National Science Foundation (grants NSF-EAR-0930061, NSF- EAR-07115494) and the Oregon Experiment Station

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Creator:: Stewart, Ryan D.
Abstract:: The Clean Water Act imposes Total Maximum Daily Load (TMDL) limits on pollutant concentrations within wastewater effluent; in Oregon, thermal discharge is one of the pollutants subject to regulation. The City of Woodburn, Oregon, funded a series of pilot scale studies to investigate the utility of natural systems to reduce...
Resource Type:: Masters Thesis
Full Text:: of Woodburn, Oregon, is a historically agricultural town, situated approximately fifteen miles

ScholarsArchive@OSU

Assessment of ground water recharge and quality under agricultural production in Lane County, Oregon

Optimizing Placement of Weather Stations: Defining and Testing a Meaningful Objective for Multi-Variable Weather Monitoring Networks

Preventing the Accumulation of Fine Sediments in Sand Dam Reservoirs: An Analytical Framework and Flume Experiments

Field evaluation of passive capillary samplers in monitoring the leaching of agrochemicals

Peppermint irrigation and nitrogen management for the reduction of nitrate loading to groundwater

Assessment of variability and monitoring methods for leaching under cover crop management

Temperature and infiltration characterization of a constructed wetland for wastewater treatment

Surface Water and Groundwater Interactions in the Walla Walla River, Northeast Oregon, USA : A Multi-Method Field-Based Approach

Improving soil water determination in spatially variable field using fiber optic technology and Bayesian decision theory

Infiltration and temperature characterization of a wastewater hyporheic discharge system

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search