With the age of nuclear power, the need for hydroelectric sources has disappeared, and with them large dams and reservoirs with their huge wasteful open water surfaces that have evaporated in thousands of acres-feet before they are ever used by people, have disappeared. The ruins of the great rivers were dry; cities and new managed auto farms spanned them. Only smaller rivers and streams continued to flow until they reached a predetermined flow force.
Then they disappeared, pouring into tunnels and flowing for hundreds of miles along the underground aqueducts into large storage tanks below the surface of the earth and protected from the leakage of sun and wind. Of these, every precious drop of water was rationalized to meet the growing needs of people. And yet it was never enough.
