The snow that falls in the Colorado Rockies not only provides water to about five million Coloradans, but also to people living in 18 other states. Colorado is the only state other than Hawaii where water flows out of but not into its borders.
In Colorado, most of the water we use comes from the snowfall in the Rocky Mountains, which acts like a frozen reservoir. Spring runoff from the snow feeds our streams, rivers, lakes, groundwater and reservoirs — starting points for the West’s water supply. This precious resource is then treated, used and returned to evaporate into snow and rain again. The water cycle recycles again and again.