Lock And Dam No 8
Lock And Dam No 8 is a gravity dam located in Union County, Arkansas, built in 1911. It carries a Low hazard potential classification.
About Lock And Dam No 8
The primary purpose of Lock And Dam No 8 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.
The dam stands 25 feet tall and stretches 334 feet across, and has a maximum storage capacity of 85,000 acre-feet. Completed in 1911, 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 | None |
| River/Stream | Ouachita River |
| Coordinates | 33.30167, -92.46333 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 334 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 85,000 acre-ft |
| Max Storage | 85,000 acre-ft |
| Normal Storage | 59,200 acre-ft |
| Max Discharge | 6,500 cfs |
Ownership & Safety
| Purpose | Navigation |
| Owner | DAEN LMK |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00156 |
| Federal ID | AR00156 |
| More Info | State Dam Safety Program |