Dettwiller Dam
Dettwiller Dam is an earth dam located in Humphreys County, Tennessee, built in 2002. It carries a High hazard potential classification.
About Dettwiller Dam
The primary purpose of Dettwiller Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Dettwiller, Frederick G., Ii (private). It impounds the Buckthorn Branch.
The dam stands 20 feet tall and stretches 250 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2002, the structure is relatively new.
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. The most recent inspection on record was 01/19/2021.
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 | Humphreys |
| River/Stream | Buckthorn Branch |
| Coordinates | 36.08671, -87.55908 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Length | 250 ft |
| Year Completed | 2002 (24 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 57 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Dettwiller, Frederick G., II |
| Owner Type | Private |
| Hazard Classification | High |
| Last Inspection | 01/19/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN05818 |
| Federal ID | TN05818 |
| More Info | State Dam Safety Program |