There is a reason that most couples today do not have a significant age difference. Consider that over the last one hundred years, the average age difference between married couples is 3.5 years.
The Colorado River begins in north central Colorado and ends at the Gulf of California. The river is chiefly supplied by snow melting in the Rocky Mountains and passes through seven U.S. states and part of Mexico. Continue Reading.
The Colorado River forms most of Arizona's western border with California and Nevada. It also runs through the heart of the Grand Canyon. Additional rivers of size include the Little Colorado, Gila and Salt. For a detailed look at the topography of Arizona, view this topographic map. 1  Landforms of America.