Koreis Dam, located in Franklin, Washington, was completed in 1982 and serves primarily for irrigation purposes. This private dam, standing at a height of 8 feet with a structural height of 5 feet, holds a maximum storage capacity of 82 acre-feet and a normal storage capacity of 52 acre-feet. The dam's low hazard potential and unlisted/unknown foundation make it a crucial water resource infrastructure in the region.

Managed by the Washington Dept of Ecology, Koreis Dam is regulated, inspected, and enforced by the state authorities to ensure its safety and functionality. Situated on Tr-Siphon Creek-Offstream, the dam plays a vital role in managing water resources in the area. With a surface area of 13 acres and a drainage area of 0.03 square miles, Koreis Dam provides essential water supply for agricultural activities while minimizing the risk of potential hazards.

Although the dam's condition is currently not rated, its emergency action plan and risk management measures are yet to be fully assessed. With its strategic location and vital role in irrigation, Koreis Dam stands as a key infrastructure for water resource management in Franklin, Washington, under the oversight of the Washington state authorities.