- Agency: U.S. Army Corps of Engineers, Sacramento District
- Contract Price: $13,000,000
- Completion: 2001
- Key Elements: Excavation of Cemented Rock, Rip-Rap Installation, Sheetpile Installation, Endangered Species Protection, Habitat Protection and Construction
The Riverbed Gradient Facility, Sacramento California. Over 180,000 cubic yards of cementitious river rock was excavated. Approximately 240,000 tons of riprap was placed between a series of sheetpile walls which formed the cells to create the gradient structure. The primary focus of this project was to create a 1,500 x 750 foot structure to protect migrating salmon from nearby intake pumps used by a local irrigation district.