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  • Pacific Lamprey returns disappointing as compared to 2023, new structures offer hope

    After a prolific 2023, adult Pacific Lamprey returns are looking disappointing this year. So far, fish counters estimate only 22,021 (as of Sept. 14) lamprey have passed through Bonneville Lock and Dam’s fish ladders during daytime hours on their way upstream to spawn. Last year’s daytime fish ladder count was 63,937, which Northwestern Division touted in a news release, as it was much higher than the 10-year average.

  • Construction to begin at Mill Creek June 10

    WALLA WALLA, Wash. – The U.S. Army Corps of Engineers, Walla Walla District will begin construction projects at Mill Creek, June 10, to improve habitat conditions for endangered salmonids and improve flood risk management operations, while also replacing the boat ramp for public use at Bennington Lake.

  • President’s Budget includes $500 million to support Green River fish passage, water supply, flood risk management

    The President’s Budget request for Fiscal Year 2025 includes $500 million for construction of a downstream fish passage facility at Howard A. Hanson Dam on the Green River.

  • Army Corps to collect Christmas trees at Woodcock Creek Lake

    The U.S. Army Corps of Engineers Pittsburgh District will begin accepting live evergreen Christmas trees at Woodcock Creek Lake, which will be used for aquatic habitat improvement projects, beginning Dec. 27.

  • Pacific lamprey returns eclipsing other years

    *Our initial news release referenced adult Pacific Lamprey returns were 170 percent higher than the 10-year-average and then referenced the 10-year-average being 41,414 which is actually closer to 154 percent. The 170 percent number came from using the 2022 Annual Fish Passage Report, which references completed counts over ten years from 2013-2022. This average is 37,425. This has been updated online and addressed in other forums. Please excuse this mistake. Adult returns are indeed 252 percent higher than the four-year-average. Also, note these counts are daytime counts and lamprey passage numbers are still probably closer to 165,314 total fish. Pacific lamprey, an ancient, eel-like fish species, are seeing returns 170 percent higher than the 10-year average (2013-2022) at Bonneville Lock and Dam this year. Lamprey numbers are also 252 percent higher than the four-year average, according to biologists responsible for reporting the number of fish counted as they migrate upstream past mainstem Columbia and Snake River dams.

  • Corps assessing future of hydropower production in Willamette Valley

    In two virtual public information sessions, the Portland District, U.S. Army Corps of Engineers will discuss the role of hydropower at their Willamette Valley dams, and how they’re answering Congress’ call to look at the future of that hydropower.

  • When trees fly: Pittsburgh District delivers new fish habitats on Ohio River

    The Pittsburgh District used a helicopter to lift 29 trees bundles and concrete blocks to create a new fish habitat in a water basin on the Ohio River.

  • Larger than life: A history of Dworshak Dam

    In May 1948, floodwaters on the Columbia River overtopped the cofferdam where construction was underway on McNary Lock and Dam. This flood, one of the largest on record, was one of many documented in the region since the mid-1880s. The propensity for flooding in the Northwest sparked much discussion about regional flood control.

  • Surveys near Buckhorn Lake leads to discovery of new population of threatened Kentucky Arrow Darter

     The U.S. Army Corps of Engineers Louisville District recently organized a partnership with the U.S.

  • Pittsburgh District Awards Contract for Fish Reefs on Monongahela River

    The U.S. Army Corps of Engineers Pittsburgh District announces the contract award for more than $2.4 million to build 73 stone fish reefs on the Monongahela River. The fish reefs construction is a part of the Lower Monongahela River project, which includes the construction of the larger lock chamber at Charleroi Locks and Dam, and the removal of Lock and Dam 3 at Elizabeth, Pennsylvania. Corps of Engineers contractors have completed Pool 3 channel dredging, and the gated dam at Braddock Locks and Dam.