Twin Parks 9

About Twin Parks 9

The primary purpose of Twin Parks 9 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 Iowa County (local government). It impounds the Tr Duesler Creek.

The dam stands 33 feet tall and stretches 558 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 235 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1963, the structure is well into its service life at over 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/02/2015. That was over 10 years ago.

At 33 feet, this dam is taller than 78% of dams nationwide.

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