Reclamation awards dam safety modification contract for Stampede

Stampede Dam

The U.S. Bureau of Reclamation has awarded a $21.8 million contract to NW Constructors Inc. for dam safety modifications at the 3.65-MW Stampede hydroelectric plant.

Reclamation held an industry day in October to discuss the modifications with potential bidders, in addition to other work needed to prevent potential overtopping during an extreme flood.

Per the contract, NW Constructors will be responsible for excavating the existing dam and dike; increasing the height of the dam with a two parallel mechanically-stabilized earth walls; constructing a new spillway crest structure; and constructing saddle dikes.

Stampede Dam -- located on California's Little Truckee River -- is part of Reclamation's Washoe Project, which also includes Prosser Creek Dam and Marble Bluff Dam.

HydroWorld.com reported Reclamation had performed risk analyses of Stampede Dam in 2011, finding the dam cannot safely pass floodwaters in accordance with USBR's Public Protection Guidelines.

The agency took bids from small businesses in 2013 to perform dam safety civil construction at Stampede but canceled that solicitation when Congress delayed authorization of the work. Congress finally approved the work last September.

For more dam safety and civil structure news, visit here.

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