Sequoyah - Diffuser Pond is an earth dam located in Hamilton County, Tennessee, built in 1981. It carries a Low hazard potential classification.
Dam profile
NID height · 45 ft45 ft tall and 1,656 ft long, taller than 90% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Sequoyah - Diffuser Pond
The primary purpose of Sequoyah - Diffuser Pond 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 TVA (federal). It impounds the Tennessee River - Offstream near Chattanooga.
The dam stands 45 feet tall and stretches 1,656 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 448 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1981, the structure is 45 years old.
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 09/29/2025.
At 45 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Tennessee |
| County | Hamilton |
| Nearest City | Chattanooga |
| River/Stream | Tennessee River - Offstream |
| Coordinates | 35.21600, -85.09000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 1,656 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 448 acre-ft |
| Max Storage | 448 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2,386 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | TVA |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/29/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN06514 |
| Federal ID | TN06514 |
| More Info | State Dam Safety Program |