The Colorado River: Then and Now

It is constantly changing—the river carves through the Earth, constantly changing both the land and the river’s path. There is evidence of native people (most likely the Mohave, Chemehuevi, Hopi, and Navajo tribes) surviving off the river through fishing, floodwater farming, and possible ditch irrigation systems. Since the 19^th century however, the river has been dammed, changing its natural progression and diverting water from the lower region. 

What the Colorado River delta is supposed to look like:

http://sonoran.org/blogs/index.php/colorado-river-delta-blog/7-welcome

What is looks like now:

http://www.wbur.org/npr/155777834/as-colorado-river-dries-up-the-west-feels-the-pain

The water level of the Colorado River has greatly decreased due to overuse of water. The white block of rock shows where the water level used to be.

http://www.msnbc.msn.com/id/32012701/ns/us_news-environment/t/warming-warning-colorado-river-water/#.ULUVq6RSTWY