MARSHFIELD 6
OperatingHydro power plant
- Capacity
- 5 MW
- Primary fuel
- Hydro
- County
- Washington County
- Operator
- GREEN MOUNTAIN POWER CORP
- Status
- Operating
- Commissioned
- 1927
- EIA plant ID
- 3739
- Coordinates
- 44.3602, -72.3352
MARSHFIELD 6, a 5 MW Hydro power plant in Washington County, Vermont. Operated by GREEN MOUNTAIN POWER CORP, commissioned 1927.
Weather peril exposure
MARSHFIELD 6 is a 5 MW hydro power plant in Washington County, VT, operated by GREEN MOUNTAIN POWER CORP, commissioned in 1927. Washington County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.1 of 5 at the 4th national percentile. Lightning is the leading peril, rated Relatively Moderate by FEMA at the 80th 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.
Washington County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Lightning | Relatively Moderate | 80th | 4.2 of 5 | 21.8 |
| Riverine flooding | Relatively Low | 80th | 4.2 of 5 | 2.3 |
| Winter weather | Relatively Moderate | 78th | 4.1 of 5 | 22.0 |
| Hurricane | Relatively Low | 65th | 3.6 of 5 | 0.04 |
| Ice storm | Relatively Low | 50th | 3.0 of 5 | 0.25 |
| Earthquake | Very Low | 46th | 2.8 of 5 | <0.01 |
| Strong wind | Relatively Low | 28th | 2.1 of 5 | 0.88 |
| Hail | Very Low | 6th | 1.2 of 5 | 1.3 |
| Tornado | Very Low | 6th | 1.2 of 5 | 0.04 |
| Wildfire | Very Low | 3rd | 1.1 of 5 | <0.01 |
| Heat wave | Relatively Low | 3rd | 1.1 of 5 | 0.74 |
Perils not assessed in Washington 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 Washington 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.