BERLIN GORHAM
OperatingHydro power plant
- Capacity
- 30 MW
- Primary fuel
- Hydro
- County
- Coos County
- Operator
- GREAT LAKES HYDRO AMERICA LLC
- Status
- Operating
- Commissioned
- 1914
- EIA plant ID
- 54639
- Coordinates
- 44.3889, -71.1645
BERLIN GORHAM, a 30 MW Hydro power plant in Coos County, New Hampshire. Operated by GREAT LAKES HYDRO AMERICA LLC, commissioned 1914.
Weather peril exposure
BERLIN GORHAM is a 30 MW hydro power plant in Coos County, NH, operated by GREAT LAKES HYDRO AMERICA LLC, commissioned in 1914. Coos County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.6 of 5 at the 16th national percentile. Riverine flooding is the leading peril, rated Relatively Moderate by FEMA at the 96th 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.
Coos County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Moderate | 96th | 4.8 of 5 | 2.4 |
| Lightning | Relatively Low | 82nd | 4.3 of 5 | 18.7 |
| Hurricane | Relatively Low | 81st | 4.2 of 5 | 0.05 |
| Ice storm | Relatively Moderate | 77th | 4.1 of 5 | 0.25 |
| Winter weather | Relatively High | 76th | 4.1 of 5 | 24.1 |
| Earthquake | Very Low | 48th | 2.9 of 5 | <0.01 |
| Strong wind | Relatively Low | 8th | 1.3 of 5 | 0.39 |
| Tornado | Very Low | 7th | 1.3 of 5 | 0.12 |
| Hail | Very Low | 4th | 1.1 of 5 | 0.90 |
| Wildfire | Very Low | 3rd | 1.1 of 5 | <0.01 |
| Heat wave | Very Low | 2nd | 1.1 of 5 | 0.31 |
Perils not assessed in Coos 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 Coos 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.