Petes Slough, located in Columbia, Oregon, is a state-managed earth dam completed in 1980 for recreational purposes. Owned by the Oregon Department of Fish and Wildlife, this structure stands at 16 feet tall and has a storage capacity of 2,000 acre-feet. With a surface area of 347 acres and a maximum discharge of 849 cubic feet per second, Petes Slough provides a popular spot for outdoor enthusiasts to enjoy water-based activities.

Despite its low hazard potential and the absence of a condition assessment rating, Petes Slough undergoes regular inspections every six years to ensure its structural integrity and safety. The dam's emergency action plan status, risk assessment, and management measures remain unspecified, leaving room for potential improvements in emergency preparedness. Positioned within the Portland District of the US Army Corps of Engineers, Petes Slough plays a vital role in managing water resources and enhancing recreational opportunities in the region.

As a key feature along the Petes Slough river system, this dam not only serves as a recreational hub but also contributes to the environmental and hydrological balance of the area. With its picturesque surroundings and vital role in water resource management, Petes Slough stands as a testament to the intersection of human development and nature conservation in Oregon. Climate and water resource enthusiasts are encouraged to explore this site and appreciate the significance of sustainable dam construction and management practices in maintaining ecological harmony.