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Toward a Crisis
The Water Budget
6 other sections not shown
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agriculture aquifer Aswan Dam Aswan High Dam bacteria barrage basin brine canals cent cents/m3 channels chemical chlorine cofferdam concrete condenser cost crops dam wall demand desalination plant designed distillation diverted economic efficiency electricity embankment embankment dam energy engineering evaporation fertile filter flood freezing fresh water freshwater groundwater hydroelectric power hydrologic cycle hydrologist increase industry installed ions irrigation Kaplan turbine Kariba Dam lake land layer lower measurement membrane meter method million natural Nile operation output oxygen Pelton wheel percolation pipe pollution power station precipitation pressure problem produced pumping quantity rain rainfall reservoir result reverse osmosis river salt sand scheme seawater seepage sewage slow sand filter soil solution spillway steam storage surface surface runoff tank temperature tidal tidal power tion transpiration tunnel turbine underground unit waste water flow water level water supply water table