DEGRAY
OperatingHydro power plant
- Capacity
- 68 MW
- Primary fuel
- Hydro
- County
- Clark County
- Operator
- USCE -VICKBURG DISTRICT
- Status
- Operating
- Commissioned
- 1972
- EIA plant ID
- 187
- Generators
- 2
- Technology
- Conventional Hydroelectric
- Net generation (2024)
- 153 GWh
- Capacity factor (2024, EIA nameplate)
- 25%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 34.2119, -93.1110
DEGRAY, a 68 MW Hydro power plant in Clark County, Arkansas. Operated by USCE -VICKBURG DISTRICT, commissioned 1972.
How DEGRAY compares
With 68 MW of capacity, DEGRAY ranks 29th among the 48 operating power plants Bywatts maps in Arkansas and 9th of the 19 operating Hydro plants in the state. It accounts for about 5.0% of Arkansas's operating Hydro capacity and 0.4% of all operating capacity in the state. Nationally it is the 239th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1972, it is older than 64% of the 48 operating Arkansas plants with a recorded commissioning year. Its operator, USCE -VICKBURG DISTRICT, runs 3 operating plants in Arkansas totaling 169 MW.
EIA-860 lists 2 generators at the site with 70 MW of nameplate capacity, mainly conventional hydroelectric technology. Net generation was 153 GWh in 2024 (a 25% capacity factor), up 13% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 115 kV line owned by ENTERGY ARKANSAS INC, about 0.1 miles away. Another 5 operating power plants totaling 2,278 MW sit within 25 miles; the largest is LAKE CATHERINE (752 MW, Natural Gas).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
DEGRAY is a 68 MW hydro power plant in Clark County, AR, operated by USCE -VICKBURG DISTRICT, commissioned in 1972. Clark County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.4 of 5 at the 84th national percentile. Ice storm is the leading peril, rated Relatively High 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.
Clark County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Relatively High | 96th | 4.9 of 5 | 0.89 |
| Lightning | Relatively High | 88th | 4.5 of 5 | 64.7 |
| Hail | Relatively Low | 86th | 4.4 of 5 | 4.8 |
| Strong wind | Relatively Moderate | 84th | 4.4 of 5 | 3.5 |
| Earthquake | Relatively Low | 83rd | 4.3 of 5 | <0.01 |
| Tornado | Relatively Moderate | 79th | 4.2 of 5 | 0.52 |
| Winter weather | Relatively Low | 77th | 4.1 of 5 | 3.9 |
| Heat wave | Relatively Low | 56th | 3.2 of 5 | 18.5 |
| Hurricane | Very Low | 54th | 3.2 of 5 | 0.03 |
| Riverine flooding | Relatively Low | 51st | 3.0 of 5 | 3.4 |
| Wildfire | Very Low | 40th | 2.6 of 5 | <0.01 |
Perils not assessed in Clark 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 Clark 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.