Barragem do Alqueva, Rio Guadiana river, Alqueva dam hydroelectric power, Moura, Portugal, Europe

Mattupetty Damn, Munnar, Western Ghats Mountains, Kerala, India, Asia

Hydro energy, brazil. River parana. itaipu hydroelectric power plant

Tokogul Dam, a hydroelectric project on the Naryn River, Kirghizstan, Central Asia, Asia

Itaipu hydroelectric dam, Parana river, border between Brazil and Paraguay, South America

Itaipu hydroelectric dam, Parana river, border between Brazil and Paraguay, South America

Female cyclist near river Danube, Run-of-the-river hydroelectricity Jochenstein, Danube Cycle Route Passau to Vienna, Upper Austria, Austria

The Ataturk Dam on the Euphrates river near Adiyaman, Turkey, Europe

Hoover Dam,, built in the 1930s, Nevada, looking towards Arizona, United States of America, North America

Hoover Dam water turbine towers, Nevada, United States of America, North America

Hoover Dam water turbine towers, Arizona side, United States of America, North America

Stave Lake Dam, Canada, British Columbia, Fraser Valley

Road To Bradley Lake Power Dam, Homer, Alaska, United States Of America