McNary Adult Fishway Weir Gate Modifications for Lamprey: USACE

Civil Built completed a design-build project for the U.S. Army Corps of Engineers at McNary Lock and Dam, modifying four adult fishway weir gates to improve lamprey passage. The scope included precision fabrication and modifications to enhance the existing gate structure while maintaining operational integrity and environmental compliance. This project supported ongoing efforts to improve fish migration pathways within the Columbia River system.