Pennington Lake

About Pennington Lake

The primary purpose of Pennington Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pennington Biomedical Research Center (state). It impounds the Tr-dawson Creek near Baton Rouge.

The dam stands 21 feet tall and stretches 2,400 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 205 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1993, the structure is 33 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 12/11/2024.

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.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.