Upper Ouachita Site 1
Key Takeaway
Upper Ouachita Site 1 is classified as high hazard in Arkansas. It was completed in 1977 and is 49 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 | 88 ft (taller than 96.2% in AR) |
| Dam Length | 1,735 ft |
| Dam Type | Earth |
| Max Storage | 22.3K acre-ft |
| Normal Storage | 6.0K acre-ft |
| Surface Area | 310 acres |
| Drainage Area | 34 sq mi |
| Max Discharge | 30,000 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | AR00901 |
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
CITY OF MENA, WATER & SEWER
Local Government
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High Hazard 80 ftFrequently Asked Questions
What is the hazard classification of Upper Ouachita Site 1?
Upper Ouachita Site 1 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 Upper Ouachita Site 1?
Upper Ouachita Site 1 is owned by CITY OF MENA, WATER & SEWER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Ouachita Site 1 built?
Upper Ouachita Site 1 was completed in 1977, making it 49 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 Upper Ouachita Site 1?
Upper Ouachita Site 1 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 Upper Ouachita Site 1?
Upper Ouachita Site 1 has a dam height of 88 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 Upper Ouachita Site 1 last inspected?
Upper Ouachita Site 1 was last inspected on July 30, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.