TULLOCH
OperatingHydro power plant
- Capacity
- 26 MW
- Primary fuel
- Hydro
- County
- Tuolumne County
- Operator
- OAKDALE&SOUTH SAN JOAQUIN IRRIGATION D.
- Status
- Operating
- Commissioned
- 1958
- EIA plant ID
- 416
- Coordinates
- 37.8761, -120.6050
TULLOCH, a 26 MW Hydro power plant in Tuolumne County, California. Operated by OAKDALE&SOUTH SAN JOAQUIN IRRIGATION D., commissioned 1958.
Weather peril exposure
TULLOCH is a 26 MW hydro power plant in Tuolumne County, CA, operated by OAKDALE&SOUTH SAN JOAQUIN IRRIGATION D., commissioned in 1958. Tuolumne County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.7 of 5 at the 17th national percentile. Wildfire is the leading peril, rated Relatively High by FEMA at the 99th 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.
Tuolumne County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively High | 99th | 4.9 of 5 | 0.01 |
| Riverine flooding | Relatively Moderate | 86th | 4.4 of 5 | 0.96 |
| Heat wave | Relatively Moderate | 72nd | 3.9 of 5 | 3.3 |
| Earthquake | Relatively Low | 69th | 3.8 of 5 | 0.02 |
| Winter weather | Relatively Moderate | 31st | 2.2 of 5 | 33.0 |
| Lightning | Relatively Moderate | 18th | 1.7 of 5 | 20.3 |
| Strong wind | Very Low | 14th | 1.6 of 5 | 0.05 |
| Tornado | Very Low | 5th | 1.2 of 5 | 0.13 |
| Hail | Very Low | 1st | 1.0 of 5 | 0.11 |
Perils not assessed in Tuolumne 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 |
| Ice storm | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Tuolumne 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.