Sims Dam, located in Douglas County, Washington, was completed in 1960 and serves as a crucial flood risk reduction structure along the Columbia River. This private-owned earth dam has a hydraulic height of 7 feet and a storage capacity of 433 acre-feet, with a normal storage level of 187 acre-feet. Despite its low hazard potential, the dam has not been rated for its condition assessment.

Managed by the Washington Department of Ecology, Sims Dam is state-regulated, inspected, and enforced to ensure its structural integrity and safety. The dam plays a vital role in protecting the surrounding area from potential flooding events, with a maximum discharge capacity of 210 cubic feet per second. Although it lacks detailed information on its spillway type and emergency action plan, Sims Dam continues to be a key asset in managing water resources in the region.