Lake Mead, on the Colorado River, is the largest reservoir in the United States, but users are consuming more water than flows down the river in an average year, which threatens the water supply for agriculture and households.

Accord announced by U.S. Interior Secretary Salazar sets stage for future environmental progress MEXICO CITY, Dec.

The convergence in the coming year of three cyclical conditions affecting ocean temperatures and weather is likely to create unprecedented challenges for states that depend on water from the Colorado River.

LAKE MEAD, Nev., Sept.

SCOTTSDALE, Ariz., Sept. 15 /PRNewswire/ -- In celebration of the 75th Anniversary of Hoover Dam (dedicated by President Franklin D. Roosevelt on Sept.