WILSON DAM
OperatingHydro power plant
- Capacity
- 667 MW
- Primary fuel
- Hydro
- County
- Lauderdale County
- Operator
- TENNESSEE VALLEY AUTHORITY
- Status
- Operating
- Commissioned
- 1925
- EIA plant ID
- 6440
- Coordinates
- 34.7960, -87.6249
WILSON DAM, a 667 MW Hydro power plant in Lauderdale County, Alabama. Operated by TENNESSEE VALLEY AUTHORITY, commissioned 1925.
Weather peril exposure
WILSON DAM is a 667 MW hydro power plant in Lauderdale County, AL, operated by TENNESSEE VALLEY AUTHORITY, commissioned in 1925. Lauderdale County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.8 of 5 at the 21st national percentile. Earthquake is the leading peril, rated Relatively Moderate by FEMA at the 89th 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.
Lauderdale County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Moderate | 89th | 4.5 of 5 | <0.01 |
| Strong wind | Relatively High | 75th | 4.0 of 5 | 5.1 |
| Tornado | Relatively High | 75th | 4.0 of 5 | 0.65 |
| Riverine flooding | Relatively Moderate | 71st | 3.9 of 5 | 3.4 |
| Hurricane | Relatively Low | 51st | 3.0 of 5 | 0.03 |
| Heat wave | Relatively Moderate | 48th | 2.9 of 5 | 8.9 |
| Ice storm | Relatively Moderate | 39th | 2.6 of 5 | 0.93 |
| Lightning | Relatively High | 33rd | 2.3 of 5 | 61.6 |
| Hail | Very Low | 24th | 2.0 of 5 | 4.1 |
| Wildfire | Very Low | 21st | 1.9 of 5 | <0.01 |
| Winter weather | Relatively Low | 16th | 1.7 of 5 | 4.4 |
Perils not assessed in Lauderdale 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 Lauderdale 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.