GREAT FALLS
OperatingHydro power plant
- Capacity
- 34 MW
- Primary fuel
- Hydro
- County
- Warren County
- Operator
- TENNESSEE VALLEY AUTHORITY
- Status
- Operating
- Commissioned
- 1916
- EIA plant ID
- 3404
- Coordinates
- 35.8067, -85.6341
GREAT FALLS, a 34 MW Hydro power plant in Warren County, Tennessee. Operated by TENNESSEE VALLEY AUTHORITY, commissioned 1916.
Weather peril exposure
GREAT FALLS is a 34 MW hydro power plant in Warren County, TN, operated by TENNESSEE VALLEY AUTHORITY, commissioned in 1916. Warren County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.0 of 5 at the 50th national percentile. Tornado is the leading peril, rated Relatively Moderate by FEMA at the 88th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Warren County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Tornado | Relatively Moderate | 88th | 4.5 of 5 | 0.34 |
| Earthquake | Relatively Low | 85th | 4.4 of 5 | <0.01 |
| Lightning | Relatively Moderate | 84th | 4.3 of 5 | 60.3 |
| Winter weather | Relatively Moderate | 80th | 4.2 of 5 | 6.6 |
| Strong wind | Relatively Moderate | 72nd | 3.9 of 5 | 5.8 |
| Hail | Relatively Low | 56th | 3.2 of 5 | 3.7 |
| Riverine flooding | Relatively Low | 51st | 3.1 of 5 | 0.82 |
| Hurricane | Very Low | 46th | 2.8 of 5 | 0.03 |
| Ice storm | Relatively Low | 45th | 2.8 of 5 | 0.64 |
| Wildfire | Very Low | 34th | 2.4 of 5 | <0.01 |
| Heat wave | Very Low | 15th | 1.6 of 5 | 0.89 |
Perils not assessed in Warren County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Warren County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.