Hannas Run Dam
Hannas Run Dam is an earth dam located in Ouachita Parish, Louisiana, built in 1908. It carries a Low hazard potential classification and has a fair condition assessment.
About Hannas Run Dam
The primary purpose of Hannas Run Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Gewesee And Wyoming, Inc. (private). It impounds the Tr-bayou Besiard near Lamkin.
The dam stands 15 feet tall and stretches 1,100 feet across, creates a reservoir covering 1,393 acres, has a maximum storage capacity of 10,660 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1908, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 03/17/2022.
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Location
| State | Louisiana |
| County | Ouachita |
| Nearest City | Lamkin |
| River/Stream | Tr-bayou Besiard |
| Coordinates | 32.58559, -92.06067 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 1,100 ft |
| Year Completed | 1908 (118 years old) |
Storage & Hydraulics
| NID Storage | 10,660 acre-ft |
| Max Storage | 10,660 acre-ft |
| Normal Storage | 9,660 acre-ft |
| Surface Area | 1,393 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 100 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Gewesee and Wyoming, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 03/17/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | LA00264 |
| Federal ID | LA00264 |
| More Info | State Dam Safety Program |