South Prong Dam
Key Takeaway
South Prong Dam is classified as high hazard in Texas. It was completed in 1956 and is 70 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 62 ft (taller than 97.3% in TX) |
| Dam Length | 4,100 ft |
| Dam Type | Earth |
| Max Storage | 22.8K acre-ft |
| Normal Storage | 13.5K acre-ft |
| Surface Area | 690 acres |
| Drainage Area | 29 sq mi |
| Max Discharge | 105,443 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | TX01255 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
ELLIS COUNTY WCID 1
Local Government
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High Hazard 30 ftFrequently Asked Questions
What is the hazard classification of South Prong Dam?
South Prong Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates South Prong Dam?
South Prong Dam is owned by ELLIS COUNTY WCID 1 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Prong Dam built?
South Prong Dam was completed in 1956, making it 70 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of South Prong Dam?
South Prong Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Prong Dam?
South Prong Dam has a dam height of 62 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was South Prong Dam last inspected?
South Prong Dam was last inspected on November 13, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.