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Oregon Water Science Center |
Total Dissolved Gas and Water Temperature in the Lower Columbia River, Oregon and Washington, 2005: Quality-Assurance Data and Comparison to Water-Quality Standards |
By Dwight Q. Tanner, Heather M. Bragg, and Matthew W. Johnston |
U.S. Geological Survey Data Series 148 |
Prepared in cooperation with the U.S. Army Corps of Engineers |
ONLINE ONLY (download the report) |
Significant FindingsWhen water is released through the spillways of dams, air is entrained in the water, increasing the downstream concentration of dissolved gases. Excess dissolved-gas concentrations can have adverse effects on freshwater aquatic life. The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, collected dissolved-gas and water-temperature data at eight sites on the lower Columbia River in 2005. Significant findings from the data include:
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Download the report (PDF, 550 KB) (Adobe Reader® required; version 5 or higher preferred. If you do not have the Adobe PDF Reader, it is available for free download from Adobe Systems Incorporated.) ContentsSignificant Findings |
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Document Accessibility: Adobe Systems Incorporated has information about PDFs and the visually impaired. This information provides tools to help make PDF files accessible. These tools convert Adobe PDF documents into HTML or ASCII text, which then can be read by screen-reading programs that synthesize text as audible speech. In addition, a version of Adobe Reader that contains support for screen readers is available. The conversion tools and the accessible reader may be obtained free from Adobe through their conversion tools Web site. For information on ordering Oregon Water Science Center publications, click on this link. For more information about the USGS Lower Columbia River Dissolved Gas Monitoring Program, please visit the study Web site. To learn more about USGS activities in Oregon, please visit our home page.
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U.S. Department of the Interior, U.S. Geological Survey
Persistent URL: http://pubs.water.usgs.gov/ds148 Page Contact Information: Publishing Service Center Last modified: Wednesday, January 18 2006, 02:49:37 PM |
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