Index Catalog // ScholarsArchive@OSU

Creator:: Wolf, Donald W.
Abstract:: Human activities may contribute to the eutrophication of surface waters by providing nutrients to aquatic ecosystems. Phosphorus is frequently identified as a nutrient that is limiting to most aquatic ecosystems under natural conditions. Sources of phosphorus contributing to eutrophic conditions often include nonpoint sources that are dispersed across the landscape....
Resource Type:: Masters Thesis

Creator:: Nielson, Lisa M.
Abstract:: In July of 2001, the Environmental Protection Agency (EPA) activated the Total Maximum Daily Load (TMDLs) provisions of the Clean Water Act. As the first river in Oregon to implement TMDL regulations, people and agencies in the Tualatin basin face many challenges. Non-point source pollution affects water quality in the...
Resource Type:: Masters Thesis
Full Text:: INCREASED SUPPLY OF WATER FROM HENRY HAGG Li\XE 76 PRIORITY OF ECONOMIC CONSIDERATIONS OR ENVIRONMENTAL

Creator:: Oregon State University. Extension Service, Oregon State University. Water Resources Research Institute, and Wolf, Donald W.
Abstract:: The Tualatin River Basin in Washington County, Oregon, is a complex area with highly developed agricultural, forestry, industrial, commercial, and residential activities. Population has grown in the past thirty years from fifty to over 270 thousand. Accompanying this population growth have been the associated increases in transportation, construction, and recreational...
Resource Type:: Technical Report
Full Text:: Environmental Quality awarded a grant in 1992 to the Oregon Water Resources Research Institute (WRRI) at Oregon

Creator:: Miner, J. Ronald, Scott, Eric F., and Oregon State University. Water Resources Research Institute
Abstract:: Water quality and stream flow data for tliree representative land uses in the Tualatin River Basin were evaluated to determine the comparative levels of various pollutants. In addition, the data were used in an effort to identify the extent to which observed concentrations of total and ortho phosphorus could be...
Resource Type:: Technical Report
Full Text:: -moving river . _ The Oregon Department of Environmental Quality awarded a grant in 1992 to 'th e

Creator:: Cross, Timothy L., Wood, Mary, and Oregon State University. Water Resources Research Institute
Abstract:: About one-third of the land in the Tualatin Basin is used for agricultural production (Miner, Scott, and Wood, 1994). The variety of crops produced includes grains, specialty seeds, vegetables, fruits, berries, and nursery corps. Cattle and hog enterprises are the most prevalent livestock operations in the area (measured by number...
Resource Type:: Technical Report
Full Text:: Environmental Quality awarded a grant in 1992 to th e Oregon Water Resources Research Institute (OWRRI) at

ScholarsArchive@OSU