Bonneville Lock and Dam Lamprey Passage
LAMPREY PASSAGE STRUCTURES WASHINGTON SHORE FISH LADDER
In September of 2016, Northbank Civil and Marine was awarded the Lamprey Passage Structures Washington Shore Fish Ladder project. The work included construction of new lamprey passage systems as well as modifications to the existing lamprey passage systems. Modifications to the existing systems included upgrading existing components from research-grade to permanent installation such as adding pump intake screens, improvements to counting systems, and improvements to operation and maintenance functionality. All work was completed in the required fish window from December 2016 through February 2017.