Grindstone-Lost-Muddy Watershed Dam A-39
Key Takeaway
Grindstone-Lost-Muddy Watershed Dam A-39 is classified as high hazard in Missouri. It was completed in 1969 and is 57 years old. Its primary use is grade stabilization. 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 | 31 ft (taller than 73.7% in MO) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 213 acre-ft |
| Normal Storage | 117 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 83 sq mi |
| Max Discharge | 252 cfs |
| Year Completed | 1969 (57 years old) |
| NID ID | MO10299 |
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
GRNDSTN-LST-MDY WRSD SBD
Local Government
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Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Grindstone-Lost-Muddy Watershed Dam A-39?
Grindstone-Lost-Muddy Watershed Dam A-39 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 Grindstone-Lost-Muddy Watershed Dam A-39?
Grindstone-Lost-Muddy Watershed Dam A-39 is owned by GRNDSTN-LST-MDY WRSD SBD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grindstone-Lost-Muddy Watershed Dam A-39 built?
Grindstone-Lost-Muddy Watershed Dam A-39 was completed in 1969, making it 57 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 Grindstone-Lost-Muddy Watershed Dam A-39?
Grindstone-Lost-Muddy Watershed Dam A-39 serves the following purposes: Grade Stabilization. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grindstone-Lost-Muddy Watershed Dam A-39?
Grindstone-Lost-Muddy Watershed Dam A-39 has a dam height of 31 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 Grindstone-Lost-Muddy Watershed Dam A-39 last inspected?
Grindstone-Lost-Muddy Watershed Dam A-39 was last inspected on June 1, 2008. Inspection dates indicate when a formal review occurred, not the results of that inspection.