184 research outputs found
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Sturgeon Lake restoration : diagnostic/feasibility study
An extensive investigation of the physical, chemical and biological characteristics of Sturgeon Lake was conducted during 1980-82. The information gained was used to identify, document, and diagnose water problems at Sturgeon Lake that may affect its uses and particularly its use by waterfowl. The investigation goal was to analyze the restoration needs and the possibilities for effectively dealing with the diagnosed problems
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Predicting peak discharges on small watersheds for culvert design
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Management of over-utilized streams : lessons from the Tualatin Watershed
Published March 1994. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo
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Wetlands, best management practices, and riparian zones
The Seventh Annual James A. Vomocil Water Quality Conference was planned after three topics had been selected as being of particular interest. Wetlands, Best Management Practices, and Riparian Zone Effectiveness were the topics. Speakers were invited who by virtue of their training, their experience, or their work assignment had insights worth sharing. This document is a collection of those presentations. In assembling the document, author submissions have been reproduced as submitted. You are invited to contact the presenters if you have particular questions.Published February 1996. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo
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Behavior of runoff-derived metals in a well defined paved-catchment/retention pond system
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Benefits and costs of riparian habitat improvement in the Tualatin River Basin
The Tualatin River in northwest Oregon has been designated as water quality limited by the Oregon Department of Environmental Quality. Restoration and enhancement of riparian areas to improve water quality is one task to be pursued by management agencies. This paper examines some of the potential costs and benefits of undertaking riparian restoration and enhancement on two tributaries of the Tualatin. In general, the potential costs are likely to be more identifiable and have market prices associated with them. The potential benefits of riparian restoration are often public or nonexclusive in nature. Measuring and estimating prices for benefits was found to be more difficult. Although costs of restoration depend on the standards adopted, the costs for the two study areas were found to be approximately 21,000 per stream mile at the other site. The cost of retiring agricultural land from production was a major influence on the total costs and was significant in explaining the cost difference between the two sites
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A resource survey of river energy and low-head hydroelectric power potential in Oregon
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Landscape change in the Tualatin Basin following Euro-American settlement
The Tualatin Basin landscape has undergone extensive change since the initiation of Euro-American settlement, with important consequences for basin hydrology and water quality. Changes that include the isolation of the Tualatin River from its floodplain areas, losses of important wetlands and riparian areas, and urbanization associated with population growth in the Basin have produced a landscape that is functionally different from the pre-contact landscape. These changes, though they have occurred over a 130 year period, began to be important in the late 19th and early 20th centuries when timber production and agricultural activities began. Any effective watershed management plan developed for the Basin must address these landscape changes and the loss of important landscape features such as wetlands and riparian areas
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Evaluation of alternative pollution control strategies for the Tualatin River Basin, Oregon
This report summarizes the conclusions reached in "A Project to Collect Scientific Data and Provide Evaluation and Recommendations for Alternative Pollution Control Strategies for the Tualatin River Basin."
This study was funded by the Oregon Department of Environmental Quality as a grant to the Oregon Water Resources Research Institute on behalf of Oregon State University and Portland State University.
The detailed analyses are given in supplementary reports, listed in the appendix
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Sediment and organic matter transport in Oregon Coast range streams
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