Q. Consider the following main rivers of North America:

1. Mississippi
2. Missouri
3. Colorado
4. Rio Grande
5. Columbia

Which of the above rivers originate from the Rocky Mountains?
Answer: 2, 3 and 5
Notes: The correct answer is 2: Missouri, Colorado, and Columbia. The Missouri River originates in the Rocky Mountains of Montana. While the Mississippi River has tributaries that flow from the Rockies, it does not originate there. The Colorado River also starts in the Rockies. The Rio Grande and Mississippi have different sources. The Rio Grande begins in the San Juan Mountains, and the Mississippi originates in Lake Itasca, Minnesota. The Columbia River originates in the Canadian Rockies.