RED ROCK HYDRO PLANT
OperatingPower plant
- County
- Marion County
- Operator
- WESTERN MINNESOTA MUN PWR AGNY
- Status
- Operating
- Commissioned
- 2021
- EIA plant ID
- 58434
- Coordinates
- 41.3697, -92.9795
RED ROCK HYDRO PLANT, a power plant in Marion County, Iowa. Operated by WESTERN MINNESOTA MUN PWR AGNY, commissioned 2021.
Weather peril exposure
RED ROCK HYDRO PLANT is a power plant in Marion County, IA, operated by WESTERN MINNESOTA MUN PWR AGNY, commissioned in 2021. Marion County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.6 of 5 at the 40th national percentile. Heat wave is the leading peril, rated Relatively Low by FEMA at the 94th 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.
Marion County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Heat wave | Relatively Low | 94th | 4.8 of 5 | 7.2 |
| Tornado | Relatively Moderate | 85th | 4.4 of 5 | 0.48 |
| Strong wind | Relatively Low | 77th | 4.1 of 5 | 5.8 |
| Winter weather | Relatively Low | 62nd | 3.5 of 5 | 12.5 |
| Lightning | Relatively Low | 61st | 3.5 of 5 | 44.6 |
| Ice storm | Relatively Low | 51st | 3.0 of 5 | 0.73 |
| Wildfire | Very Low | 49th | 3.0 of 5 | <0.01 |
| Hail | Relatively Low | 48th | 2.9 of 5 | 5.5 |
| Riverine flooding | Relatively Low | 28th | 2.1 of 5 | 3.4 |
| Earthquake | Very Low | 27th | 2.1 of 5 | <0.01 |
| Hurricane | Very Low | 2nd | 1.1 of 5 | <0.01 |
Perils not assessed in Marion 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 Marion 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.