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Fish Transportation Oversight Team annual report - FY 1986: transport operations on the Snake and Columbia Rivers
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1987
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[PDF-31.07 MB]
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Description:The 1986 transport season began March 26 and ended September 26. A total of 17,082,770 juveniles were collected, including 4,773,941 at Lower Granite, 2,093,232 at Little Goose, and 10,215,597 at McNary.
Total collection included 80,963 juveniles bypassed at Lower Granite, 32,405 at Little Goose and 3,306,666 at McNary. These included marked yearling chinook released back to the river as controls for transport evaluation.
Snake River flows peaked at 211 kefs on June 1. Flows beyond powerhouse capacity occurred from May 27 thru June 11. Columbia River flows at McNary Dam peaked at 395 kefs on June 1. McNary spilled for 80 days, from March 26 thru June 20, with peak spill of 181 kefs occurring on June 7.
Lower Granite and Little Goose seasonal collection mortality was 0.19 percent and 0.36, percent respectively. This compares with 0.22 percent and 0.60 percent in 1985. Seasonal collection mortality was 1.45 percent at the McNary facility, slightly lower than the 1.75 percent recorded in 1985.
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Rights Information:Public Domain
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