Flag Lake Dam
Flag Lake Dam is an earth dam located in Bossier Parish, Louisiana, built in 1940. It carries a Low hazard potential classification.
About Flag Lake Dam
The primary purpose of Flag Lake Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Usaf Afgsc (federal). It impounds the Fifi Bayou near Barksdale Afb.
The dam stands 11 feet tall and stretches 2,720 feet across, creates a reservoir covering 660 acres, has a maximum storage capacity of 4,200 acre-feet, and collects water from a drainage area of 33 square miles. 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. The most recent inspection on record was 10/18/2021.
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Location
| State | Louisiana |
| County | Bossier |
| Nearest City | Barksdale Afb |
| River/Stream | Fifi Bayou |
| Coordinates | 32.50550, -93.58864 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 2,720 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 4,200 acre-ft |
| Max Storage | 4,200 acre-ft |
| Normal Storage | 3,000 acre-ft |
| Surface Area | 660 acres |
| Drainage Area | 33 sq mi |
| Max Discharge | 3,060 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USAF AFGSC |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 10/18/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | LA00173 |
| Federal ID | LA00173 |
| More Info | State Dam Safety Program |