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Waste water disposal and purification costs - Concept with toxic water flowing down a concrete drainpipe to the river from the city sewers and imaginary city map.
Diagonal view at a dam wall, water is overflowing seamless a long stone wall and creating a thin waterfall. Part of a lock system to create Hydro energy for a mill.
Blue Moon Valley near Jade Dragon Snow Mountain, Lijiang, Yunnan China.
Bonneville Dam on the Columbia River, Oregon.
View landscape mountain and panoramic nature background of Pang Sawan weir or dike block water and check dam overflow spillway for thai people traveler travel visit at Ban Rai in Uthai Thani, Thailand
Beijing pastoral scenery
a garden of a shady nature by a stream flowing into a paved stream flowing through a bed of perennials. undergrowth perennials into a wet spring. rocky outcrop with ferns, salvia nemorosa, hosta, lanceolata, shady character, primula denticulata, praecox, cytisus, iris pseudacous, femina, matteuccia struthiopteris, filix, hemerocallis fulva, dryopteris, variegata, hosta sieboldiana
Water treatment plant - dam
Wastewater planning in the city - concept with imaginary city map and sewage
Long exposure of a lock on the River Cam at Cambridge.
Water splashing through a dam
Weir in Cottbus
fish farm, fishpond
Large amount of thick foam on river surface after cascade indicates that water is chemically polluted
Industrial sewage water draining out from cement tube into the environmental. Industrial pollution scene photo.
Wastewater Treatment Plant, a project consisting of advanced filtration and disinfection plant, warehouses and pumping stations with advanced treatment technology.
Sites along the Rideau Canal in Canada's Capital, Ottawa
Weir on the Neckar river. Dam
Catfish eat food that feeds many freshwater fish for agriculture and aquaculture
Karlsruhe, Baden-Wuerttemberg.
Water power plant with leaking water by a river
Sewage water treatment plant
Trout breeding in Albania in Europe
St Catherine's Lock near Guildford Surrey England Europe
Wastewater treatment plant Water tank
The stream \
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.
Rice field. Irrigation canal.
Fish ladder with running water.
View of Marsh Lock weir at river Thames, Henley-on-thames, UK
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