Water for Energy (W4E) Flooded land destroys Downstream cropland and forests or cropland estuaries are deprived of Large losses and displaces people nutrient-rich silt of water through evaporation Downstream flooding is reduced Reservoir is useful for recreation and fishing Provides water for 2002 Brooks/Cole-Thomson Learning year-round irrigation of cropland Can produce cheap electricity (hydropower)） Migration and spawning of some fish are disrupted Using Dams and Reservoirs to Supply More Water:The Trade-offs Using Dams and Reservoirs to Supply More Water: The Trade-offs Reservoir is useful for recreation and fishing Can produce cheap electricity (hydropower) Provides water for year-round irrigation of cropland Water for Energy (W4E) Migration and spawning of some fish are disrupted Large losses of water through evaporation Flooded land destroys forests or cropland and displaces people Downstream flooding is reduced Downstream cropland and estuaries are deprived of nutrient-rich silt