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首页> 美国政府科技报告 >Instream Flow Assessment Big Eightmile Creek, Bohannon Creek, and Hayden Creek, Idaho. Flow Characterization Study
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Instream Flow Assessment Big Eightmile Creek, Bohannon Creek, and Hayden Creek, Idaho. Flow Characterization Study

机译：流量评估大八英里溪，Bohannon Creek和爱达荷州海登溪。流动特征研究

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The Bureau of Reclamation conducted flow characterization and habitat studies on Big Eightmile Creek, Bohannon Creek, and Hayden Creek, located in the Lemhi River sub-basin in Idaho, to identify stream flow needs to support relevant life history stages of summer steelhead (Oncorhynchus mykiss), spring Chinook salmon (O. tschawytscha), and bull trout (Salvelinus confluentus). Average snowpack level in the Lemhi headwaters on April 1, 2004 was 70 percent of normal. Big Eightmile Creek and Bohannon Creek flows were continuously recorded upstream from major diversions using a stage recorder during the 2004 irrigation season. Big Eightmile Creek flows ranged from 96 cfs on June 6 to 9 cfs on September 10. Bohannon Creek flows ranged from 24 cfs on June 6 to 4.9 cfs on September 10. Water temperatures were also monitored in 2004 and compared to Idaho water quality standards. Reclamation characterized flow needs for various life stages of the selected species using the Physical Habitat Simulation (PHABSIM) model at each study site. Data were collected at a total of 13 study sites: five each on Big Eightmile Creek and Bohannon Creek and three on Hayden Creek.

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