Secondary Retention Reservoir Dam
Secondary Retention Reservoir Dam is an earth dam located in Coffee County, Tennessee. It carries a High hazard potential classification.
About Secondary Retention Reservoir Dam
Secondary Retention Reservoir Dam is a dam in Coffee, Tennessee. The dam is owned by Usaf Afmc (federal). It impounds the Elk River Offstream near Arnold Afb.
The dam stands 33 feet tall and stretches 2,660 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 170 acre-feet.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 03/02/2022.
At 33 feet, this dam is taller than 78% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Tennessee dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Tennessee |
| County | Coffee |
| Nearest City | Arnold Afb |
| River/Stream | Elk River Offstream |
| Coordinates | 35.37333, -86.05333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 2,660 ft |
Storage & Hydraulics
| NID Storage | 170 acre-ft |
| Max Storage | 170 acre-ft |
| Normal Storage | 168 acre-ft |
| Surface Area | 4 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | USAF AFMC |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 03/02/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TN03108 |
| Federal ID | TN03108 |
| More Info | State Dam Safety Program |