Old Lake Dam
Old Lake Dam is an earth dam located in Evangeline Parish, Louisiana, built in 1940. It carries a Low hazard potential classification and has a fair condition assessment.
About Old Lake Dam
The primary purpose of Old Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Percy J. Fontenot, Inc. (private). It impounds the Tr-bayou Cocodrie.
The dam stands 15 feet tall and stretches 2,050 feet across, and has a maximum storage capacity of 5,600 acre-feet. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 02/26/2024.
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Location
| State | Louisiana |
| County | Evangeline |
| River/Stream | Tr-bayou Cocodrie |
| Coordinates | 30.80393, -92.24013 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 2,050 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 5,600 acre-ft |
| Max Storage | 5,600 acre-ft |
| Normal Storage | 3,500 acre-ft |
| Max Discharge | 1,286 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Percy J. Fontenot, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 02/26/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | LA00281 |
| Federal ID | LA00281 |
| More Info | State Dam Safety Program |