Col. Charles D. Maynard Lock and Dam
Key Takeaway
Col. Charles D. Maynard Lock and Dam is classified as significant hazard in Arkansas. It was completed in 1968 and is 58 years old. Its primary use is navigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 39 ft (taller than 73.5% in AR) |
| Dam Length | 7,780 ft |
| Dam Type | Concrete |
| Max Storage | 68.5K acre-ft |
| Normal Storage | 61.3K acre-ft |
| Surface Area | 6,680 acres |
| Drainage Area | 158,542 sq mi |
| Max Discharge | 459,000 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | AR00166 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
USACE - Little Rock District
Federal Government
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What is the hazard classification of Col. Charles D. Maynard Lock and Dam?
Col. Charles D. Maynard Lock and Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Col. Charles D. Maynard Lock and Dam?
Col. Charles D. Maynard Lock and Dam is owned by USACE - Little Rock District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Col. Charles D. Maynard Lock and Dam built?
Col. Charles D. Maynard Lock and Dam was completed in 1968, making it 58 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 Col. Charles D. Maynard Lock and Dam?
Col. Charles D. Maynard Lock and Dam serves the following purposes: Navigation, Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Col. Charles D. Maynard Lock and Dam?
Col. Charles D. Maynard Lock and Dam has a dam height of 39 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 Col. Charles D. Maynard Lock and Dam last inspected?
Col. Charles D. Maynard Lock and Dam was last inspected on December 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.