लेखक: Committee on River Science at the U. S. Geological Survey

Rivers provide about 60 percent of the nation’s drinking water and irrigation water and 10 percent of the nation’s electric power needs. The multiple and sometimes incompatible services demanded of r …

Rivers provide about 60 percent of the nation’s drinking water and irrigation water and 10 percent of the nation’s electric power needs. The multiple and sometimes incompatible services demanded of r …