Mission
Mission is a buttress dam located in Clay County, North Carolina, built in 1924. It carries a High hazard potential classification and has a fair condition assessment.
About Mission
The primary purpose of Mission is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Northbrook Carolina Hydro Ii, Llc (private). It impounds the Hiwassee River near Mission.
The dam stands 50 feet tall and stretches 397 feet across, creates a reservoir covering 41 acres, has a maximum storage capacity of 282 acre-feet, and collects water from a drainage area of 292 square miles. Completed in 1924, the structure is over a century old.
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. 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 10/19/2021.
At 50 feet, this dam is taller than 93% 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 North Carolina 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 | North Carolina |
| County | Clay |
| Nearest City | Mission |
| River/Stream | Hiwassee River |
| Coordinates | 35.06460, -83.92610 |
Physical Characteristics
| Dam Type | Buttress |
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Dam Length | 397 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 282 acre-ft |
| Max Storage | 282 acre-ft |
| Normal Storage | 282 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 292 sq mi |
| Max Discharge | 34,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Northbrook Carolina Hydro II, LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/19/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NC00348 |
| Federal ID | NC00348 |
| More Info | State Dam Safety Program |