Gavins Point Dam - Omaha District US Army Corps of Engineers

OMAHA DISTRICT

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& Bank Stabilization along the Missouri River (Updated June 2014)

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General Summary
More than 100 repair projects have been identified at the Missouri River Mainstem projects (dams and bank stabilization and navigation project) and associated infrastructure. Projects include repairing spillway gates, outlet works, scour areas, work recreational facilities, roads and other flood control structures that were damaged during the Missouri River Flood of 2011. The estimated cost of making these repairs totals $234 million.

Fort Peck Dam, Fort Peck, Mont.
Six contracts were awarded in 2012 to repair damages at Fort Peck Dam. They include repair of gates, the spillway slab, plunge pool, recreation area roads and drains, the spillway access road and associated drains, rehabilitation of eight emergency gate controls and the repair of relief wells and the horizontal outfall pipes. The gate repair contractor has begun repairs. Installation of relief wells and underseepage control has been completed. The gate repair is scheduled for completion in summer 2015. The plunge pool repair is scheduled for completion in December 2015. All other repairs are scheduled for completion in 2014. 

Garrison Dam, Riverdale, N.D.
Eight contracts were awarded in 2012 to repair damages at Garrison Dam. They include repair of gates, the flood control tunnel, spillway approach, west tailrace road and rehabilitation of the west terrace drain and the powerhouse slope drain. The gate repair contractor has begun repairs, with completion currently scheduled for spring 2016. All other repairs at Garrison are scheduled for completion in 2014 and 2015. Also included are repairs to Pipestem Dam, which have been completed, and the Williston levee, which are substantially complete with minor work on relief well outfalls, seeding and surfacing remaining. 

Oahe Dam Pierre, S.D. 
Seven contracts were awarded in 2012 to repair damages at Oahe Dam. They include repair of gates, stilling basin roads, Fort Yates erosion control, flood control tunnel repairs, rehabilitation of the Oahe recreation area and dredging on the upstream area of spillway gates. The gate repairs, and the repairs at Fort Yates, are scheduled for completion in summer 2014. All other repairs are complete.

Fort Randall Dam, S.D. 
Seven contracts were awarded in 2012 to repair damages at Fort Randall Dam. They include repair of gates, spillway slab and project roads. Three of the contracts have been completed. They include road repairs, toe drain repairs and spillway gallery repairs. The gate repair contractor has begun repairs. The gate repairs and spillway repairs are scheduled for completion in fall 2015. All other repairs are scheduled for completion in 2014. 

Big Bend Dam, Big Bend, S.D. 
Seven contracts were awarded in 2012 to repair damages at Big Bend Dam. They include repair of gates, upstream riprap, relief well outfalls, and rehabilitation of spillway concrete. The gate repairs are scheduled for completion in spring 2014. All other repairs are complete.

Gavins Point Dam, Yankton, S.D.
Seven contracts were awarded in 2012 to repair damages at Gavins Point Dam. They include repair of gates, tailrace erosion protection, relief wells and horizontal outfalls, and spillway slab. Gate repairs are scheduled for completion in fall 2015. All other repairs are complete.

Bank Stabilization along the Missouri River 
Ten contracts were awarded in 2012 to repair damages along the Missouri River. They include repair of bank stabilization and navigation structures and other infrastructure. Contractors continue working on the river. The bank stabilization repairs to the navigation reach between Sioux City and Rulo are scheduled for completion in summer 2015. All other repairs are complete.