Arthur V. Ormond Lock and Dam is a concrete dam located in Conway County, Arkansas, built in 1969. It carries a Significant hazard potential classification.
Dam profile
NID height · 57 ft57 ft tall and 1,850 ft long, taller than 94% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Arthur V. Ormond Lock and Dam
The primary purpose of Arthur V. Ormond 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 Morrilton.
The dam stands 57 feet tall and stretches 1,850 feet across, creates a reservoir covering 5,660 acres, has a maximum storage capacity of 70,400 acre-feet, and collects water from a drainage area of 154,949 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 03/04/2024.
At 57 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Arkansas |
| County | Conway |
| Nearest City | Morrilton |
| River/Stream | Arkansas |
| Coordinates | 35.12539, -92.78743 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 57 ft |
| Dam Height | 28 ft |
| Dam Length | 1,850 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 70,400 acre-ft |
| Max Storage | 70,400 acre-ft |
| Normal Storage | 48,800 acre-ft |
| Surface Area | 5,660 acres |
| Drainage Area | 154,949 sq mi |
| Max Discharge | 518,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Little Rock District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 03/04/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR00165 |
| Federal ID | AR00165 |
| More Info | State Dam Safety Program |