1. Describe the rivers that feed the Colorado River.
The Colorado River forms where the Grand River and the Green River meet. The Grand River comes from the Rocky Mountains and the Green River comes from the Wind River Mountains. The Green River is the larger of the two.
2. Which Native American tribes lived in the Colorado River Valley?
The Apache and Navajo Indian tribes lived along the desert portions of the Colorado. The Pimas, Maricpas, and Papagas lived along the valley of the Gila. The flood plains of the Colorado were home to the Mojave and Yumas, with the Chemehuevas living further north, and various Shoshonian tribes living along the Rio Virgen.
3. What is the Mogollon Escarpment?
The Mogollon Escarpment separates the low desert regions from the upper plateau. The escarpment rises to more than four thousand feet.
4. Describe the high region of the Colorado River Valley.
The high region of the Colorado River Valley is in mountains with heights from eight thousand to fourteen thousand feet. There are heavy snowfalls in these mountains that melt during the warmer months. These rivers have cut a series of canyons that form the upper portion of the Colorado basin. Many of these canyons and gorges were unknown until the Colorado River Exploring Expedition found them.
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