Twin Lakes Upper Dam

About Twin Lakes Upper Dam

The primary purpose of Twin Lakes Upper Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Twin Lakes Club Of Spartanburg Inc (private). It impounds the Tr-middle Tyger River.

The dam stands 34 feet tall, creates a reservoir covering 23 acres, and has a maximum storage capacity of 405 acre-feet. Completed in 1964, the structure is well into its service life at over 50 years old.

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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/12/2024.

At 34 feet, this dam is taller than 80% of dams nationwide.

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