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Aeration pool of the municipal wastewater treatment plant water treatment plant
Cancelled Stamp From The United States Featuring Frederick Douglass A Greater Writer And Former Slave.  He Died Over 115 Years Ago In 1895.
Water level regulator in a water utility. Water pressure at the water utility.
Flow on a river.
Dam with movable bulkheads on the Brembo river
A 1975 Zambia postage stamp with an illustration of Victoria Falls.
A close-up of a circular embankment with floodwaters overflowing the reservoir
Artificial cascade in the river Savoureuse in Belfort, France in detail. Trees growing along the river bank mirror in the water. The river is regulated to prevent flooding.
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Dirty rain water drains into ocean
Water flowing over floodgates of a dam at Khun Dan Prakan Chon, Nakhon Nayok, Thailand
High quality stock photo of Pacific Ocean water meeting fresh water from the Elkhorn Slough in the Monterey Bay.
Mang Thit old brick kiln on the bank of a rural river, Vinh Long province, Vietnam
Fish go for spawning upstream. Salmon jumps over waterfall on the Venta River, Kuldiga, Latvia.
Pattern Design on Banknote
Vintage US stamp celebrating first Edison's lamp
Connemara is a western region on the atlantic coast of Ireland. The main town is Clifdon.
energy production with run of the river hydroelectric power station, splashing water
Panoramic view of the Itaipu Hydroelectric power plant, and its huge water dam.
Small waterfall from a sluice reservoir
Cancelled Stamp From Southern Rhodesia (Now Known As Zimbabwe) Featuring Victoria Falls.
water flow in the river
Potable water supply pipe in a treatment plant
thermal waters of pamukkale, popular natural resourt in turkey, winter time, river type water flow, close up hot springs
Listed industrial architecture: Historical hydroelectric power plant in Nürtingen at the town bridge.
Austin Flooding - Tom Miller Dam Opens Flood Gates after Historic Flooding , water rushing out of dam , white wash and fast moving dirty brown water
A cold, winter's day in Cornwall, England, at the natural bathing pool in Bude.  The waves crash against the railings, and the water pours down as it returns to the sea. A deep-green, almost emerald, wave approaches.
Sites along the Rideau Canal in Canada's Capital, Ottawa
Macro Close-up of Cuban Pesos Banknote Pattern Design
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