LOWER SOUTH FORK
OperatingPower plant
- Capacity
- 1 MW
- County
- Carbon County
- Operator
- LOWER SOUTH FORK LLC
- Status
- Operating
- EIA plant ID
- 58120
- Coordinates
- 45.2091, -109.1441
LOWER SOUTH FORK, a 1 MW power plant in Carbon County, Montana. Operated by LOWER SOUTH FORK LLC. One of 53 power plants tracked in Montana on Bywatts.
Weather peril exposure
LOWER SOUTH FORK is a 1 MW power plant in Carbon County, MT, operated by LOWER SOUTH FORK LLC. Carbon County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.0 of 5 at the 50th national percentile. Riverine flooding is the leading peril, rated Relatively Low by FEMA at the 98th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to this plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Carbon County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Low | 98th | 4.9 of 5 | 0.64 |
| Wildfire | Relatively Moderate | 93rd | 4.7 of 5 | <0.01 |
| Earthquake | Very Low | 72nd | 3.9 of 5 | <0.01 |
| Hail | Relatively Low | 57th | 3.3 of 5 | 1.3 |
| Heat wave | Very Low | 37th | 2.5 of 5 | 1.1 |
| Ice storm | Very Low | 20th | 1.8 of 5 | 0.01 |
| Winter weather | Relatively Moderate | 19th | 1.8 of 5 | 21.0 |
| Tornado | Very Low | 18th | 1.7 of 5 | 0.11 |
| Strong wind | Very Low | 5th | 1.2 of 5 | 0.69 |
| Lightning | Relatively Moderate | 3rd | 1.1 of 5 | 34.9 |
Perils not assessed in Carbon 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Carbon 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.