Murray Lock And Dam
Murray Lock And Dam is a concrete dam located in Pulaski County, Arkansas, built in 1969. It carries a Significant hazard potential classification.
About Murray Lock And Dam
The primary purpose of Murray 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 Little Rock.
The dam stands 77 feet tall and stretches 3,740 feet across, creates a reservoir covering 9,700 acres, has a maximum storage capacity of 108,500 acre-feet, and collects water from a drainage area of 158,030 square miles. Completed in 1969, 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 07/11/2023.
At 77 feet, this dam is taller than 97% of all dams in the United States.
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Location
| State | Arkansas |
| County | Pulaski |
| Nearest City | Little Rock |
| River/Stream | Arkansas |
| Coordinates | 34.79198, -92.35857 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 77 ft |
| Dam Height | 23 ft |
| Dam Length | 3,740 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 108,500 acre-ft |
| Max Storage | 108,500 acre-ft |
| Normal Storage | 87,100 acre-ft |
| Surface Area | 9,700 acres |
| Drainage Area | 158,030 sq mi |
| Max Discharge | 416,000 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 | 07/11/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR00171 |
| Federal ID | AR00171 |
| More Info | State Dam Safety Program |