The Swan Lake Hydroelectric facility is located 22 miles northeast of Ketchikan, accessible only by boat or seaplane. The existing facility was a 174-ft tall dam, 86,000 acre-ft reservoir with 2,217-ft long power tunnel and powerhouse with a generating capacity of 22 megawatts.
Pacific Pile and Marine was contracted to perform concrete demolition work on the spillway, procure and place Owner-designed embedded metals and seal plates for the flashboard system (a unique element to this project), erect the flashboard system, place Owner-provided embedded metals for the vertical gate and erect the vertical gate, place reinforced concrete on the wing walls, construct a new reinforced concrete center pier, and modify and seal existing parapet walls.
