AUS Projects

Snoqualmie Falls Cofferdam Construction a Feat in High Water   Constructing cofferdams in moving, high water poses challenges, we’ve found. Western Washington’s “dry season” wasn’t so dry this year. June 1 marked the opening of our five-month in-water window at Puget Sound Energy, Inc.’s Snoqualmie Falls Hydroelectric Redevelopment Project; unfortunately this date rolled around in … Read more

Snoqualmie Falls Hydroelectric Plant Rehabilitation Snoqualmie Falls Washington: Associated Underwater Services (AUS) continues to assist to Barnard Construction of Bozeman, Montana with the rehabilitation of the historic and still functioning underground hydroelectric facility at Snoqualmie Falls. Built in the 1890s and located directly underneath the 350 foot waterfall of the Snoqualmie river, the Snoqualmie falls … Read more

AUS divers help complete Wanapum Dam stabilization Divers drilled and bolted stop-logs to the dam. Divers from Associated Underwater Services have completed the installation of 585 concrete stop logs weighing 60 tons each at Wanapum Dam one month ahead of schedule. The dam is located on the Columbia River, 6 miles downstream of Vantage. The … Read more

  AUS Divers Assist with Historic Pier Rehabilitation on Seattle Waterfront: Divers from Associated Underwater Services (AUS) have recently completed pier rehabilitation project at the historic Pier 57 on Seattle’s Central Waterfront.. The work consisted of replacing deteriorated timber piles with steel stubs which improved the structural strength of the historic pier. The work was … Read more

Borman Park Intake 2 Gary, Indiana | 2001 The Borman Park Intake is comprised of a land drop shaft and subterranean tunnel that terminates in a riser intake structure one mile offshore of Lake Michigan. Th riser is installed in a drilled shaft and connects the tunnel to the intake structure allowing water to be … Read more

South Bay Ocean Outfal San Diego, California | 1996-1997 The project was initiated to prevent serious environmental problems from wastewater throughout the waters of San Diego and Tijuana. It was designed and constructed to convey wastewater from the International wastewater treatment plant and City of San Diego wastewater treatment to a diffuser system approximately 4 … Read more

Lake Mead Intake No. 2 Southern Nevada Water Authority | 1998-1999 The scope involved construction of an intake shaft in Lake Mead. Tasks included installation of a rock deflector cage, flared inlet, and 12-foot diameter steel-lined shaft in depths up to 240 feet below the lake surface and 380 feet offshore. The intake site was … Read more