SIBLEY MILL
OperatingHydro power plant
- Capacity
- 2 MW
- Primary fuel
- Hydro
- County
- Richmond County
- Operator
- AUGUSTA CANAL AUTHORITY
- Status
- Operating
- Commissioned
- 1946
- EIA plant ID
- 54322
- Coordinates
- 33.4873, -81.9918
SIBLEY MILL, a 2 MW Hydro power plant in Richmond County, Georgia. Operated by AUGUSTA CANAL AUTHORITY, commissioned 1946.
Weather peril exposure
SIBLEY MILL is a 2 MW hydro power plant in Richmond County, GA, operated by AUGUSTA CANAL AUTHORITY, commissioned in 1946. Richmond County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.0 of 5 at the 26th national percentile. Hurricane 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.
Richmond County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 80th | 4.2 of 5 | 0.11 |
| Earthquake | Relatively Low | 78th | 4.1 of 5 | <0.01 |
| Ice storm | Relatively High | 76th | 4.0 of 5 | 1.1 |
| Lightning | Relatively High | 74th | 4.0 of 5 | 62.4 |
| Strong wind | Relatively High | 51st | 3.1 of 5 | 4.2 |
| Winter weather | Relatively Low | 43rd | 2.7 of 5 | 1.6 |
| Wildfire | Relatively Low | 37th | 2.5 of 5 | <0.01 |
| Tornado | Relatively High | 35th | 2.4 of 5 | 0.20 |
| Hail | Relatively Moderate | 30th | 2.2 of 5 | 2.9 |
| Heat wave | Relatively Moderate | 27th | 2.1 of 5 | 4.6 |
| Riverine flooding | Relatively Moderate | 19th | 1.7 of 5 | 0.79 |
Perils not assessed in Richmond 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 Richmond 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.