APPLE RIVER
OperatingHydro power plant
- Capacity
- 2 MW
- Primary fuel
- Hydro
- County
- St. Croix County
- Operator
- NORTHERN STATES POWER CO - MINNESOTA
- Status
- Operating
- Commissioned
- 1901
- EIA plant ID
- 6231
- Coordinates
- 45.1576, -92.7162
APPLE RIVER, a 2 MW Hydro power plant in St. Croix County, Wisconsin. Operated by NORTHERN STATES POWER CO - MINNESOTA, commissioned 1901.
Weather peril exposure
APPLE RIVER is a 2 MW hydro power plant in St. Croix County, WI, operated by NORTHERN STATES POWER CO - MINNESOTA, commissioned in 1901. St. Croix County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.0 of 5 at the 75th national percentile. Strong wind is the leading peril, rated Relatively High by FEMA at the 92nd 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.
St. Croix County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Strong wind | Relatively High | 92nd | 4.7 of 5 | 4.0 |
| Hail | Relatively Moderate | 79th | 4.2 of 5 | 5.3 |
| Tornado | Relatively Moderate | 74th | 4.0 of 5 | 0.43 |
| Lightning | Relatively Moderate | 72nd | 3.9 of 5 | 34.9 |
| Heat wave | Relatively Low | 71st | 3.8 of 5 | 3.2 |
| Winter weather | Relatively Moderate | 36th | 2.5 of 5 | 17.1 |
| Wildfire | Very Low | 34th | 2.4 of 5 | <0.01 |
| Riverine flooding | Relatively Low | 23rd | 1.9 of 5 | 0.46 |
| Ice storm | Relatively Low | 5th | 1.2 of 5 | 0.33 |
| Earthquake | Very Low | 1st | 1.0 of 5 | <0.01 |
Perils not assessed in St. Croix 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 St. Croix 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.