Timber Hills Lake

About Timber Hills Lake

The primary purpose of Timber Hills Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mallie Investments Llc (private). It impounds the Little Osage River-tr.

The dam stands 35 feet tall and stretches 1,070 feet across, creates a reservoir covering 39 acres, has a maximum storage capacity of 852 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2006, the structure is relatively new.

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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 02/20/2023.

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

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