CANYON FERRY
OperatingHydro power plant
- Capacity
- 50 MW
- Primary fuel
- Hydro
- County
- Lewis and Clark County
- Operator
- U S BUREAU OF RECLAMATION
- Status
- Operating
- Commissioned
- 1953
- EIA plant ID
- 6400
- Coordinates
- 46.6490, -111.7280
CANYON FERRY, a 50 MW Hydro power plant in Lewis and Clark County, Montana. Operated by U S BUREAU OF RECLAMATION, commissioned 1953.
Weather peril exposure
CANYON FERRY is a 50 MW hydro power plant in Lewis and Clark County, MT, operated by U S BUREAU OF RECLAMATION, commissioned in 1953. Lewis and Clark County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.1 of 5 at the 4th national percentile. Wildfire 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.
Lewis and Clark County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 89th | 4.6 of 5 | <0.01 |
| Earthquake | Relatively Low | 87th | 4.5 of 5 | <0.01 |
| Winter weather | Very High | 52nd | 3.1 of 5 | 43.8 |
| Riverine flooding | Relatively Low | 47th | 2.9 of 5 | 1.1 |
| Heat wave | Very Low | 30th | 2.2 of 5 | 0.70 |
| Lightning | Relatively Moderate | 22nd | 1.9 of 5 | 24.6 |
| Hail | Very Low | 13th | 1.5 of 5 | 0.77 |
| Strong wind | Relatively Low | 9th | 1.4 of 5 | 0.51 |
| Tornado | Very Low | 7th | 1.3 of 5 | 0.08 |
| Ice storm | Very Low | 0th | 1.0 of 5 | 0.01 |
Perils not assessed in Lewis and Clark 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 Lewis and Clark 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.