Alvin Gray Dam
Alvin Gray Dam is an earth dam located in Beauregard Parish, Louisiana, built in 1986. It carries a Low hazard potential classification and has a fair condition assessment.
About Alvin Gray Dam
The primary purpose of Alvin Gray Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Gray Family Irrevocable Trust (private). It impounds the Big Branch near Deridder.
The dam stands 15 feet tall and stretches 493 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 57 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1986, the structure is 40 years 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 04/12/2023.
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Location
| State | Louisiana |
| County | Beauregard |
| Nearest City | Deridder |
| River/Stream | Big Branch |
| Coordinates | 30.79969, -93.14926 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 493 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 57 acre-ft |
| Max Storage | 57 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,018 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Gray Family Irrevocable Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/12/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | LA00436 |
| Federal ID | LA00436 |
| More Info | State Dam Safety Program |