TUNNEL 1 POWER PROJECT
OperatingHydro power plant
- Capacity
- 7 MW
- Primary fuel
- Hydro
- County
- Malheur County
- Operator
- OWYHEE IRRIGATION DISTRICT
- Status
- Operating
- Commissioned
- 1993
- EIA plant ID
- 50362
- Coordinates
- 43.6420, -117.2327
TUNNEL 1 POWER PROJECT, a 7 MW Hydro power plant in Malheur County, Oregon. Operated by OWYHEE IRRIGATION DISTRICT, commissioned 1993.
Weather peril exposure
TUNNEL 1 POWER PROJECT is a 7 MW hydro power plant in Malheur County, OR, operated by OWYHEE IRRIGATION DISTRICT, commissioned in 1993. Malheur County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.4 of 5 at the 36th national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 91st 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.
Malheur County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 91st | 4.6 of 5 | <0.01 |
| Winter weather | Relatively Moderate | 77th | 4.1 of 5 | 10.5 |
| Earthquake | Relatively Low | 76th | 4.1 of 5 | <0.01 |
| Heat wave | Relatively Low | 63rd | 3.5 of 5 | 3.6 |
| Riverine flooding | Relatively Low | 49th | 3.0 of 5 | 0.79 |
| Hail | Relatively Low | 49th | 3.0 of 5 | 0.11 |
| Ice storm | Very Low | 19th | 1.8 of 5 | 0.01 |
| Lightning | Relatively Low | 11th | 1.5 of 5 | 20.7 |
| Tornado | Very Low | 8th | 1.3 of 5 | 0.24 |
| Strong wind | Very Low | 7th | 1.3 of 5 | 0.15 |
Perils not assessed in Malheur 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 Malheur 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.