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Energy Nason Creek Acclimation Facility
Large tan metal warehouse with a gabled roof and roll-up door, surrounded by chain-link fencing along a gravel road in a pine-forested, mountainous area under an overcast sky.
Project Location
Grant County, WA
Client Grant County Public Utility District
Market Sector
Project Type
  • Fish Facilities
Services Provided

Project Highlights

  • Constructed a 13,000 sq. ft fish acclimation building featuring eight 30-foot diameter tanks.
  • Installed 240 ft of root wad revetment to stabilize the stream bank and mitigate erosion.
  • Built a 3,200 sq. ft maintenance building and a 1,500 sq. ft residence for operations staff, with coordinated permit monitoring across multiple agencies.

Project Description

The Nason Creek Acclimation Facility in Grant County, WA, supports the annual acclimation and release of up to 275,000 spring Chinook salmon smolts into the local river system. MacKay Sposito provided construction management and inspection services for the development, which included multiple critical infrastructure components such as an acclimation building, maintenance and operations facilities, and an in-water intake structure. Additional project elements included electrical and mechanical rooms, a backup generator, HVAC and utility improvements, septic and stormwater systems, and office/shop spaces.

Unique environmental challenges, such as sediment accumulation and bank scouring, prompted responsive and collaborative solutions. The inspection team maintained real-time coordination with the client and designers, enabling timely design adaptations that reduced costs and improved outcomes.