Laurie Campbell / Outfall from hydroelectric Laggan Dam, Lochaber, Scotland, UK, February
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Steven David Miller / Lake Argyle reservoir dam wall and outflow, aerial view. Reservoir dammed in 1971 for Ord River Irrigation Scheme. The Kimberley, Western Australia. 2017.
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Rick Price / Lake Argyle reservoir, part of Ord River irrigation scheme. Hydro electric power generation at dam. The Kimberley, Western Australia, 2015.
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Rick Price / View from Ord River Dam, looking downstream through river valley. Lake Argyle, The Kimberley. 2016.
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Juan Manuel Borrero / Hydroelectric power station of Salto do Cabrito. Lombadas Valley Nature Reserve, Sao Miguel Island, Azores, Portugal. 2019.
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Laurie Hedges / Tracking shot showing a large area of rainforest flooded by a hydroelectric dam in the southern reaches of the Amazon, Brazil, 2019.
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Alan Williams / Weir at the top of Rhaeadr Mawddach waterfall, part of hydroelectric electricity generation system showing outlet lower left Afon, Mawddach, Coed y Brenin Forest, near Dolgellau Snowdonia National Par...
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David Kjaer / Almendra hydroelectric dam, also known as the Villarino Dam, on the Rio Tormes, Salamanca, Spain. June.
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Alan Williams / Hydroelectric generation system on the Afon (River) Cwm Llan close to the Watkin Path up Mount Snowdon Snowdonia National Park, North Wales, UK, June 2017.
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Alan Williams / Hydroelectric generation system on the Afon (River) Cwm Llan close to the Watkin Path up Mount Snowdon, Snowdonia National Park, North Wales, UK, June 2017.
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Tom Gilks / Technicians standing in front of hydro electric power plant, Rwanda, September 2014.
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Tom Gilks / Technicians inspecting pipes carrying water to hydro electric power plant, Rwanda, September 2014.