Fidelity South Lake Dam

About Fidelity South Lake Dam

The primary purpose of Fidelity South Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Fmr Texas Limited Partnership (private). It impounds the Tr-marshall Branch near Trophy Club.

The dam stands 18 feet tall and stretches 525 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 58 acre-feet, and collects water from a drainage area of 0 square miles.

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 06/09/2022.

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

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