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Clear Lake Hydro Project

Hydro power plant in California, United States of America. Approximate location 38.9236, -122.5667.

HydroCaliforniaUnited States of America

Clear Lake Hydro Project is a 2 MW hydro power plant in California, United States of America. It is operated by Yolo County Flood Control WCD. Based on its capacity (estimated), it can supply roughly 2.5k homes (estimated). It ranks #8514 of 10,938 United States of America power plants by installed capacity. Commissioned in 1985, it is around 41 years old — long-established. 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).

2Source-backed capacity
2,502homes powered (est.)
1985commissioned (~41 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0050128.

Data status

Known data

FacilityClear Lake Hydro Project WRI
CountryUnited States of America · California WRI
Coordinates38.9236, -122.5667 WRI
FuelHydro WRI
MW installed capacity2 MW WRI source record; scope not independently normalised
OwnerYolo County Flood Control WCD WRI
Commissioned1985 WRI

Calculated from dataset

Capacity rank in country#8514 of 10938 calculated
Fuel-specific rank in country#1120 of 1449 calculated
Capacity vs country/fuel peers0.31× · 8 MW median · 1449 peers calculated
Homes-powered equivalent2,502 calculated
Climate14.2°C · HDD 1,821 derived from coordinates
Environmental severityC3 · 33/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset
CO₂ emissionsnot applicable not applicable

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: Wikidata P2109 nameplate capacity; fuel: WRI source-record fuel

In context: how this plant compares

At 2 MW, Clear Lake Hydro Project 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.

Capacity vs largest hydro plants in United States of America

Grand Coulee: 6,809 MW7kGrand Coul…Bath County: 2,862 MW3kBath CountyChief Joseph: 2,456 MW2kChief Jose…Robert Moses Niagara: 2,429 MW2kRobert Mos…John Day: 2,160 MW2kJohn DayBad Creek: 2,000 MW2kBad CreekLudington: 1,979 MW2kLudingtonThe Dalles: 1,820 MW2kThe Dalles

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Yolo County Flood Control WCD.

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 38.9°N — which shapes how much energy it can produce and how its output varies through the year.

14.2°Cannual mean temp
1,821heating degree-days (base 18°C)
449cooling degree-days (base 18°C)
552 melevation

Monthly mean temperature

J: 7 °CJF: 8 °CFM: 9 °CMA: 12 °CAM: 16 °CMJ: 20 °CJJ: 23 °CJA: 23 °CAS: 20 °CSO: 16 °CON: 10 °CND: 7 °CD23 °C

Heating degree-days here run 26% 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: 40/100 — 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

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
33/100environmental-severity index
16.7°Cseasonal temperature swing
74 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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 #1120 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

Location

Coordinates 38.9236, -122.5667 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Clear Lake Hydro Project?

Clear Lake Hydro Project is a 2 MW source-record hydro power plant in California, United States of America, commissioned in 1985.

How many homes can Clear Lake Hydro Project power?

Its output is enough to supply roughly 2,502 homes (estimated).

Who operates Clear Lake Hydro Project?

Clear Lake Hydro Project is operated by Yolo County Flood Control WCD.

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