Snake River Spring Chinook 2025. 2 Map of the Snake River spring/summer chinook ESU. The location of the Spring Chinook start migrating into the Columbia River in January and continue through June Therefore, there is a discontinuity in the timeseries for forecast and actual values that must be recognized.
With Snake River spring, summer Chinook on a ‘quasiextinction from www.reddit.com
By 2020, however, returns fell back to their previous lows. For consistent comparison of forecast with actual, dam count data prior to 2015 account for the earlier cutoff
With Snake River spring, summer Chinook on a ‘quasiextinction
2024 2024 2025 Forecast Return Forecast Spring Chinook Upriver Total * 121,000 116,332 122,500 Upper Columbia 19,400 18,224 21,500 Upper Columbia natural-origin 2,700 1,609 2,200 Snake River Spring/Summer ** 63,500 70,743 56,200 Snake River natural-origin** 9,200 10,514 9,800 Lower River Total The 2025 Lewis River spring Chinook forecast to the tributary mouth is similar to the recent 5-year average return of 3,700 and greater than the 10-year average. In 2024, 121,000 adult spring chinook bound for tributaries upstream of Bonneville Dam returned to.
Oregon’s 1st confirmed spring chinook catch of the season. See the. Columbia River Spring Chinook 2025 Forecast About Same As Last Year's Actual Return; Lower For Summer Chinook, Sockeye January 10, 2025 Fisheries managers this year are forecasting a spring Chinook salmon run into the upper Columbia River that is slightly higher than last year's run, while predicting a slightly lower number of the Chinook than last year returning to the Snake River. 2024 Results 2025 Expectations Willamette Spring Chinook 48,800 forecasted adult return to CR (19% wild) 37,737 actual adult return (77% of forecast; 26% wild)
Big increases in 2022 Snake River Chinook returns » Publications. As noted in the report, the Spring Chinook period ending was changed from 5/31 to 6/15 to include Snake River Summer Chinook For consistent comparison of forecast with actual, dam count data prior to 2015 account for the earlier cutoff