for example , the plains of western breeders feeding the united usa and in other parts of the world , and india ' s reservoir mechanisms have enabled that country to be state - satisfied in food producers since 1974 . in addition , in most parts of the world irrigation have functioned to remedy life - threats troubles such as poverty from lack of agricultural development , drought as a result of flooding , mortality from floods , and continued problems from inability of toilets water sources .
Dam building prevents life-threatening situations.