Twelve Mile Creek Watershed Site D-62-1

About Twelve Mile Creek Watershed Site D-62-1

The primary purpose of Twelve Mile Creek Watershed Site D-62-1 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Union County Swcd (local government). It impounds the Tr- Twelve Mile Cr. near Afton.

The dam stands 35 feet tall and stretches 644 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 315 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1985, the structure is 41 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/10/2020.

At 35 feet, this dam is taller than 82% of dams nationwide.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.