Nantachie Lake Dam No. 2 is an earth dam located in Grant Parish, Louisiana, built in 1961. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 29 ft29 ft tall and 2,690 ft long, taller than 65% 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 embankment section and the water level is illustrative.
About Nantachie Lake Dam No. 2
The primary purpose of Nantachie Lake Dam No. 2 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by State of Louisiana (state). It impounds the Bayou Grappe near Aloha.
The dam stands 29 feet tall and stretches 2,690 feet across, creates a reservoir covering 1,580 acres, has a maximum storage capacity of 35,500 acre-feet, and collects water from a drainage area of 84 square miles. Completed in 1961, the structure is well into its service life at over 50 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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/12/2024.
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Location
| State | Louisiana |
| County | Grant |
| Nearest City | Aloha |
| River/Stream | Bayou Grappe |
| Coordinates | 31.60800, -92.77500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 2,690 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 35,500 acre-ft |
| Max Storage | 35,500 acre-ft |
| Normal Storage | 11,200 acre-ft |
| Surface Area | 1,580 acres |
| Drainage Area | 84 sq mi |
| Max Discharge | 120 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | State of Louisiana |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/12/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | LA00595 |
| Federal ID | LA00595 |
| More Info | State Dam Safety Program |