Total Dissolved Gas and Water Temperature in the Lower Columbia River, Oregon and Washington, 2002: Quality-Assurance Data and Comparison to Water-Quality Standards |
By Dwight Q. Tanner, Matthew W. Johnston, and Heather M. Bragg
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Water-Resources Investigations Report 02-4283
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Prepared in cooperation with the U.S. Army Corps of Engineers |
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Significant Findings The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, collected total-dissolved-gas and water-temperature data at eight sites near dams on the lower Columbia River in 2002. When water is released through the spillways of dams, air is entrained in the water, increasing the concentration of total dissolved gas to levels that can have adverse effects on freshwater aquatic life. Significant findings include:
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Contents
Introduction |
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