Roc-mar-ton Lake Dam

About Roc-mar-ton Lake Dam

The primary purpose of Roc-mar-ton Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lisa Anderson (private). It impounds the Little Creek.

The dam stands 21 feet tall and stretches 450 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 97 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1929, the structure is well-established, with more than 75 years of service.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 11/04/2016. That was 9 years ago, which is on the longer end for a high-hazard structure.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Indiana dam safety program can provide more specific information about emergency planning for this structure.

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