Col. Charles D. Maynard Lock And Dam
Col. Charles D. Maynard Lock And Dam is a concrete dam located in Jefferson County, Arkansas, built in 1968. It carries a Significant hazard potential classification.
About Col. Charles D. Maynard Lock And Dam
The primary purpose of Col. Charles D. Maynard Lock And Dam is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. The dam is owned by Usace - Little Rock District (federal). It impounds the Arkansas near Pine Bluff.
The dam stands 61 feet tall and stretches 7,780 feet across, creates a reservoir covering 6,680 acres, has a maximum storage capacity of 68,500 acre-feet, and collects water from a drainage area of 158,542 square miles. Completed in 1968, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 12/07/2022.
At 61 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Arkansas |
| County | Jefferson |
| Nearest City | Pine Bluff |
| River/Stream | Arkansas |
| Coordinates | 34.41167, -92.10333 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 61 ft |
| Dam Height | 39 ft |
| Dam Length | 7,780 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 68,500 acre-ft |
| Max Storage | 68,500 acre-ft |
| Normal Storage | 61,300 acre-ft |
| Surface Area | 6,680 acres |
| Drainage Area | 158,542 sq mi |
| Max Discharge | 459,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Little Rock District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 12/07/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR00166 |
| Federal ID | AR00166 |
| More Info | State Dam Safety Program |