Grande Hills Lake Dam
Grande Hills Lake Dam is an earth dam located in St. Tammany Parish, Louisiana. It carries a Low hazard potential classification and has a fair condition assessment.
About Grande Hills Lake Dam
The primary purpose of Grande Hills Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Grande Hills Estates Homeowners Assoc. (private). It impounds the Ten Mile Branch near Abita Springs.
The dam stands 15 feet tall and stretches 600 feet across, creates a reservoir covering 59 acres, has a maximum storage capacity of 447 acre-feet, and collects water from a drainage area of 1 square miles.
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 12/14/2021.
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Location
| State | Louisiana |
| County | St. Tammany |
| Nearest City | Abita Springs |
| River/Stream | Ten Mile Branch |
| Coordinates | 30.57985, -89.98417 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 600 ft |
Storage & Hydraulics
| NID Storage | 447 acre-ft |
| Max Storage | 447 acre-ft |
| Normal Storage | 330 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 859 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Grande Hills Estates Homeowners Assoc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 12/14/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | LA00351 |
| Federal ID | LA00351 |
| More Info | State Dam Safety Program |