Black Lake Bayou Reservoir

About Black Lake Bayou Reservoir

The primary purpose of Black Lake Bayou Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by State Of Louisiana (local government). It impounds the Black Lake Bayou near St. Maurice.

The dam stands 44 feet tall and stretches 2,380 feet across, creates a reservoir covering 13,800 acres, has a maximum storage capacity of 320,000 acre-feet, and collects water from a drainage area of 920 square miles. Completed in 1990, the structure is 36 years old.

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 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 09/04/2024.

At 44 feet, this dam is taller than 90% of dams nationwide.

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 Louisiana dam safety program can provide more specific information about emergency planning for this structure.

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