{"product_id":"total-dissolved-gas-and-water-united-u-s-department-of-the-interior-9781288708086","title":"Total Dissolved Gas and Water Temperature in the Lower Columbia River, Oregon and Washington, Water Year 2009: Quality-Assurance Data and Comparison t","description":"Significant Findings When 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 monitoring stations on the lower Columbia River in Oregon and Washington in 2009. Significant findings from the data include: During the spill season of April through August 2009, hourly values of total dissolved gas (TDG) were occasionally larger than 115-percent saturation for the forebay stations (John Day navigation lock, The Dalles forebay, Bonneville forebay, and Camas). Hourly values of total dissolved gas were occasionally larger than 120-percent saturation for two tailwater stations (John Day Dam tailwater and Cascade Island). From mid- to late July to mid-September 2009, water temperatures were greater than 20 degree(s) C (degrees Celsius) at seven stations on the lower Columbia River. According to the State of Oregon temperature standard, the 7-day average maximum temperature of the lower Columbia River should not exceed 20 degree(s)C; Washington regulations state that the 1-day maximum should not exceed 20 degree(s) C as a re-sult of human activities. All 96 laboratory checks of the TDG sensors with a certified pressure gage were within 0.4 percent saturation after 3 to 4 weeks of deployment in the river. All but 2 of the 73 in situ field checks of TDG sensors with a secondary standard were within + or - (plus or minus) 1.0-percent saturation after 3-4 weeks of deployment in the river. All 74 of the field checks of barometric pressure were within + or - 2.0 millimeters of mercury of a secondary standard, and all 65 water-temperature field checks were within + or - 0.2 degree(s) C. For the eight monitoring stations in water year 2009, a total of 99.2 percent\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e United U. S. Department of the Interior,Dwight Q. Tanner\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1288708084\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781288708086\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 02\/05\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 38\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.19lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.08d","brand":"United U. S. Department of the Interior","offers":[{"title":"Paperback","offer_id":48449455718655,"sku":"9781288708086","price":15.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_21ce809f-f0b0-456f-977a-6d3c37c0c853.jpg?v=1777263467","url":"https:\/\/www.whiterainbookhouse.com\/products\/total-dissolved-gas-and-water-united-u-s-department-of-the-interior-9781288708086","provider":"WR Book House","version":"1.0","type":"link"}