Fish Facilities

Bonneville Lock & Dam Washington Shore Ladder Entrance Modifications

The Bonneville Lock and Dam is located approximately 145 river miles from the mouth of the Columbia River between Oregon and Washington. An existing fish ladder has provided Chinook and Coho salmon a means around the hydro facility at the dam to their spawning areas upstream. Lamprey, an eel-like fish with no fins, have not … Continue reading Bonneville Lock & Dam Washington Shore Ladder Entrance Modifications

Bonneville Bradford Island Branch B Fish Ladder Repair

This emergency project for the historic Bonneville Branch B Fish Ladder on Bradford Island at the Bonneville Dam on the Columbia River was necessary to repair a scoured fish ladder structure and replace the failed riprap revetment. This work involved a very strict in-water work window to complete the fish ladder and allow the US … Continue reading Bonneville Bradford Island Branch B Fish Ladder Repair

Lower Elwha Klallam Tribe Fish Hatchery & Pipelines

This project consisted of the construction of site improvements, 6,500 feet of 36-inch water supply and drainage pipelines connecting to the new water treatment plant, flow-through levee, water supply wells, new hatchery and storage buildings, fish culture facilities including 600,000 gallon raceways with base preparation and foundation drainage system, pollution abatement pond, adult holding pond, … Continue reading Lower Elwha Klallam Tribe Fish Hatchery & Pipelines

Cowlitz Salmon Hatchery Remodel

The Cowlitz Salmon Hatchery facility, before remodeling, consisted of a fish barrier across the Cowlitz River, fish ladder, transportation channel, fish separation facilities, thirty-six ponds, eighteen early rearing kettles, river water pumping plant, well water supply, pollution abatement ponds, residences, and a hatchery building with a visitor facility. The project included a remodel of the … Continue reading Cowlitz Salmon Hatchery Remodel