Most water used in industry - used to cool power plants. – pump water from river or a lake – carry water through cooling tower – return water to river or lake. Returned water is warmer than the source, but is clean and can be reused.
Irrigation Provides crops with water from sources other than precipitation. Techniques: – Shallow ditches – Overhead sprinklers Most water evaporates before reaching plant roots
Water Management Projects Designed for areas with inadequate surface water Provide water to dry areas. Ex. SRP allows people to live and grow crops in desert areas. – Provide water – Generate electric power
Water Diversion Projects Divide rivers into canals to supply water to arid regions. Ex. Colorado Watershed
Dams and Reservoirs Dam - structure built across a river to control a river ’ s flow. Reservoir - body of water that forms behind a dam. – Used for drinking water, irrigation, recreation, and industry.
Dams and Reservoirs Hydroelectric dams use the power of flowing water to generate electrical energy.