Lock and Dam No 6 is a gravity dam located in Union County, Arkansas, built in 1913. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 357 ft long, taller than 55% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Lock and Dam No 6
The primary purpose of Lock and Dam No 6 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 Daen Lmk (federal). It impounds the Ouachita River near Sterlington--louisiana.
The dam stands 26 feet tall and stretches 357 feet across, and has a maximum storage capacity of 37,700 acre-feet. Completed in 1913, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Arkansas |
| County | Union |
| Nearest City | Sterlington--louisiana |
| River/Stream | Ouachita River |
| Coordinates | 33.03167, -92.08833 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 26 ft |
| Dam Length | 357 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 37,700 acre-ft |
| Max Storage | 37,700 acre-ft |
| Normal Storage | 27,600 acre-ft |
| Max Discharge | 13,000 cfs |
Ownership & Safety
| Purpose | Navigation |
| Owner | Daen Lmk |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00155 |
| Federal ID | AR00155 |
| More Info | State Dam Safety Program |