Santiam River

Green Peter Dam is a concrete structure with a gated spillway that was completed with Foster Dam in 1968 at a cost of $82.3 million. In coordination with Foster, the two dams work together for the purposes of…

Foster Dam is a rock-fill structure with a concrete gated spillway, and was completed with Green Peter Dam in1968 at a cost of $82.3 million. In coordination with Green Peter, the two dams work together for the purposes…

Detroit Dam is located at river mile 49 on the North Santiam River, about 45 miles southeast of Salem, Ore.

The North Santiam canyon is rocky, narrow, and steep where Big Cliff Dam was constructed.  For that reason, Big Cliff is a concrete dam, rather than an earth and rockfill embankment structure, like most Corps dams in the…