White River Lock and Dam 1 — United States of America
Hydro power plant in Arkansas, United States of America. Approximate location 35.7574, -91.6369.
HydroArkansasUnited States of America
White River Lock and Dam 1 is a 4.3 MW hydro power plant in Arkansas, United States of America. It is operated by White River Hydroelectric. Based on reported annual generation of 16 GWh, it can supply roughly 4.5k homes. It ranks #7432 of 10,884 United States of America power plants by installed capacity. Commissioned in 2007, it is around 19 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 5.3% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0057160.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: Wikidata P2109; fuel: WRI GPPD
In context: how this plant compares
At 4.3 MW, White River Lock and Dam 1 is below the median hydro plant in United States of America (8 MW). Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Load factor
- 42%, from 16 GWh of reported generation, in line with the 42% median for 1342 hydro plants in United States of America
- Generation trend
- 17 GWh in 2013 and 16 GWh in 2019 (−10%)
- Highest and lowest year
- 2015: 33 GWh; 2016: 6 GWh
- Share of United States of America hydro capacity
- less than 0.1% of 102,513 MW across 1,449 plants in this dataset
- Age among peers
- 1,384 of 1,444 dated hydro plants in United States of America are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by White River Hydroelectric.
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 35.8°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 24% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 41/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #923 largest hydro power plant of 1449 in United States of America by capacity.
United States of America has 1449 hydro power plants in this dataset, together about 102,513 MW of capacity.
Nearby power plants
- White River Lock and Dam 2 · Hydro · 3.5 MW · Arkansas
- White River Lock and Dam 3 · Hydro · 4.3 MW · Arkansas
- Independence Steam Electric Station · Coal · 1,800 MW · Arkansas
- Independence Steam Station · Coal · 1,800 MW · Arkansas
- Greers Ferry Lake · Hydro · 96 MW · Arkansas
- Columbia Flooring Melbourne · Waste · 2 MW · Arkansas
Location
Coordinates 35.7574, -91.6369 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is White River Lock and Dam 1?
White River Lock and Dam 1 is a 4.3 MW hydro power plant in Arkansas, United States of America, commissioned in 2007.
How much electricity does White River Lock and Dam 1 generate?
White River Lock and Dam 1 generates about 16 GWh of electricity per year.
Who operates White River Lock and Dam 1?
White River Lock and Dam 1 is operated by White River Hydroelectric.