for examples , the plains of western farmland supplying the united states and also other parts of the europe , and india ' s irrigation networks have enabled that country to be self - sufficient in food production since 1974 . in contrast , in certain places of the world dams have helped to remedy life - threatening conditions such as starvation from lack of economic development , starvation as a result of rains , devastation from floods , and ongoing plague from lack of drinkable groundwater supplies .
Dam building prevents life-threatening situations.