Felsenthal Lock And Dam
Felsenthal Lock And Dam is a gravity dam located in Union County, Arkansas, built in 1978. It carries a Significant hazard potential classification.
About Felsenthal Lock And Dam
The primary purpose of Felsenthal 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 - Vicksburg District (federal). It impounds the Ouachita near Sterlington.
The dam stands 105 feet tall and stretches 659 feet across, creates a reservoir covering 22,730 acres, has a maximum storage capacity of 76,700 acre-feet, and collects water from a drainage area of 10,782 square miles. Completed in 1978, the structure is 48 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 06/27/2024.
At 105 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Arkansas |
| County | Union |
| Nearest City | Sterlington |
| River/Stream | Ouachita |
| Coordinates | 33.05988, -92.12219 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 105 ft |
| Dam Length | 659 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 76,700 acre-ft |
| Max Storage | 76,700 acre-ft |
| Normal Storage | 56,300 acre-ft |
| Surface Area | 22,730 acres |
| Drainage Area | 10,782 sq mi |
| Max Discharge | 200,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Vicksburg District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 06/27/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR01514 |
| Federal ID | AR01514 |
| More Info | State Dam Safety Program |