After years of extensive studies, a risk assessment and recent rehabilitation of spillway gates, officials re-classify Green Peter Dam, near Sweet Home, Ore., as a Low Risk dam. Recent rehabilitation of the spillway tainter gates for trunnion friction and overall reliability have improved the risk characterization.
These efforts along with a detailed review of the dam’s hazards, performance and consequences, helped decrease risks from the last assessment, which rated Green Peter as a High Risk dam.