Three Mile Flat Reservoir in Klamath, Oregon, is a privately owned Earth dam built in 1964 primarily for irrigation purposes. This reservoir has a storage capacity of 1351 acre-feet and a surface area of 140 acres, serving the local community with water for agricultural needs. Despite being located in a dry wash area with no downstream settlement, the reservoir plays a crucial role in supporting the surrounding agricultural activities.
With a low hazard potential and a condition assessment that is currently not rated, Three Mile Flat Reservoir has been inspected every 6 years to ensure its structural integrity and safety. Managed by the Oregon Water Resources Department and regulated by state authorities, this reservoir stands as a vital water resource in the region. Its maximum discharge capacity of 928 cubic feet per second and normal storage of 950 acre-feet make it an essential asset for the local water supply and irrigation needs, contributing to the sustainability of the area's agricultural operations in a dry climate.