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Creator:: Miner, J. Ronald, Nelson, Peter O., Vedanayagam, Samuel, Oregon State University. Water Resources Research Institute, and Oregon State University. Extension Service
Abstract:: The Tualatin River Basin in Washington County, Oregon has been identified by the Oregon Department of Environmental Quality (DEQ) as "Water Quality Limited." Algal blooms have become commonplace in the lower , reaches of. the river during summer months. Phosphorus has been identified as the nutrient upon which to base...
Resource Type:: Technical Report
Full Text:: . - Segments of the Tualatin River Basin, Orego n Oregon State University Extension Servic e Oregon Water

Creator:: Wells, Scott A., Berger, Christopher, Knutson, Mike, and Oregon State University. Water Resources Research Institute
Abstract:: The goal of this phase of the study was to develop a model of the Tualatin River incorporating Scoggins Creek and Hagg Lake. This tool will be used in conjunction with a hydrologic model, the EPA HSPF model (Johnson, Imhoff, and Kittle, 1984), to analyze management strategies to improve water...
Resource Type:: Technical Report
Full Text:: loadings to the river, nor was QUAL2E able to evaluate stratification effects in Hagg Lake or in the

Creator:: Khaodhiar, Sutha, Nelson, Peter O., and Oregon State University. Water Resources Research Institute
Abstract:: The Tualatin River is a major water resource for Washington County. In its course, the river drains forest lands, farmlands, and urban areas receiving toxic materials from non-point source runoff: Wastewater treatment plant effluents from municipalities and industries also contribute toxic materials to the river. Many materials discharged into the...
Resource Type:: Technical Report
Full Text:: Summary and Assessment o f Tonics Data for the Tualatin River August

Creator:: Vedanayagam, Samuel, Nelson, Peter O., and Oregon State University. Water Resources Research Institute
Abstract:: The purpose of this study was to develop a mass-balance model for total suspended solids in the Tualatin River in order to better understand the clarity-turbidity problem in the river. Major sources and sinks of suspended solids in the river were identified, and seasonal effects were explored. The study also...
Resource Type:: Technical Report
Full Text:: essential part in describing and predicting water quality in a stream or river basin . Water quality models

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:: th e lower reaches of Dairy Creek or from the river which are typically greater than 8 mg/1 . The

ScholarsArchive@OSU