Phil Savoie / Water flowing out of the Hyalite Resevoir, Hyalite Creek, Gallatin National Forest, Bozeman, Montana, USA. March

Phil Savoie / Water flowing out of the Hyalite Resevoir, Hyalite Creek, Gallatin National Forest, Bozeman, Montana, USA. September.

Phil Savoie / Water flowing out of the Hyalite Resevoir, Hyalite Creek, Gallatin National Forest, Bozeman, Montana, USA. September

Will Watson / View from the Malvern Hills AONB of British Camp Reservoir, the Worcestershire Severn Plain and the Cotswolds from British Camp / Herefordshire Beacon, England, UK, August 2017.

Will Watson / British Camp Reservoir and Tinker's Hill Wood, the Malvern Hills AONB and SSSI, Worcestershire, England, UK, August 2017.

Alan Williams / Pipeline from Llyn Llydaw reservoir on Mount Snowdon to bring water to the hydro-electric power station shown in the River Glaslyn, Valley, below with the summit of Snowdon in the background, Snowdoni...

Andrew Cooper / Aerial view of Dartmoor, looking towards Burrator Reservoir, Dartmoor National Park, Devon, England, UK, October 2015.

Inaki Relanzon / Siurana Church and Siurana Reservoir, Priorat area, Tarragona, Catalonia, Spain.

Juan Carlos Munoz / Aerial view of Lake Powell reservoir, Page, Arizona, USA, February 2015.

Juan Carlos Munoz / Aerial view of Lake Powell reservoir, Page, Arizona, USA, February 2015.

Graham Eaton / Rainbow over the Garreg Ddu Dam, in the Elan Valley near Rhayader, Powys, Mid Wales, April 2013.

Rod Williams / Egyptian goose (Alopochen aegyptiacus) feral male, WWT London Wetland Centre, Barn Elms, Barnes, London, UK, October.

Peter Lewis / Looking down on the British camp resevoir and Malvern Hills, Worcestershire, UK, January 2011

Peter Lewis / Looking down on the British camp resevoir and Malvern Hills, Worcestershire, UK, January 2011

Nick Upton / Rutland Water reservoir, view west from the Hambleton peninsula, Rutland, UK, October 2020.

Alan Williams / Reflections in Llyn Dinas on a still morning in the Nant Gwynant valley near Beddgelert, Snowdonia, North Wales, UK October 2018

Alan Williams / Reflections in Llyn Dinas on a still morning in the Nant Gwynant valley near Beddgelert, Snowdonia, North Wales, UK October2018

Denis-Huot / Aerial view of Tranqera reservoir, province of Huelva, Andalucia, Spain, May 2019.

Denis-Huot / Aerial view of Rio Tinto and Gossan reservoir, province of Huelva, Andalucia, Spain. June 2019.

Denis-Huot / Torrejon-Tajo Reservoir, Monfrague National Park, Extremadura, Spain, June.

Phil Savoie / Talybont Reservoir, Brecon Beacons National Park, the largest stillwater reservoir in Brecon Beacons NP, Wales, UK. April

Phil Savoie / Talybont Reservoir, Brecon Beacons National Park, the largest stillwater reservoir in Brecon Beacons NP, Wales, UK. April

Wayne Wu Ying / Wild Wonders of China / High Island Reservoir, Hong Kong, China November 2016.

Wayne Wu Ying / Wild Wonders of China / High Island Reservoir, Hong Kong, China November 2016.

Wayne Wu Ying / Wild Wonders of China / Coastline landscape, High Island, Hong Kong Global Geopark, China November 2016.

Alan Williams / Alwen Resevoir Damn on Denbigh Moors (Mynydd Hiraethog) overflowing after heavy rain Conwy County North Wales UK September 2019.

Alan Williams / Llyn Brenig reservoir on Denbigh Moors used to manage flow in the River Dee in drought conditions to maintain water supply to North West England North Wales UK September 2019 222627