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.

Cowlitz Salmon Hatchery Remodel(1) Cowlitz Salmon Hatchery Remodel(4) Cowlitz Salmon Hatchery Remodel(3) Cowlitz Salmon Hatchery Remodel(2)
The project included a remodel of the existing fish hatchery and installation of a new water treatment system at the hatchery. Included in the remodel are updates to the existing early rearing building and separators to meet Federal Energy Regulatory Commission requirements.

Upgrades to the hatchery included a new one-story building with offices, conference room, visitor’s center and spawning room which was built to overlook the new adult fish-handling facility. The new water treatment facility included 1.2 MG cast-in-place concrete water holding structure with base preparation and foundation drainage system, rotary micro screen drum filters, pressure sand filters, UV disinfection, packed columns and air strippers, and a new hydronic system including boilers, chillers and heat exchangers. JWF managed the testing, start-up and commissioning of all process equipment.