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.
This species formerly occurred throughout much of the Colorado River basin, from western Colorado and southwestern Wyoming to northern Arizona (and perhaps California), including not only the Colorado River, but also major tributary systems such as the Green River, lower Yampa River, and White River (Utah).