Upper Petit Jean Wid Site 4

About Upper Petit Jean Wid Site 4

The primary purpose of Upper Petit Jean Wid Site 4 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Upper Petit Jean / Logan County Conservation District (local government). It impounds the Brushy Creek.

The dam stands 45 feet tall and stretches 2,965 feet across, creates a reservoir covering 29 acres, has a maximum storage capacity of 2,880 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1992, the structure is 34 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 12/28/2015. That was over 10 years ago.

At 45 feet, this dam is taller than 91% of dams nationwide.

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