Q. Which of the following statements with regard to the Rio Grande and Colorado Rivers is/are correct?
1.The Rio Grande River rises in the San Juan Mountains and forms the definitive international land border between the USA and Mexico.
2.The Colorado River originates in the Rocky Mountains and is the primary hydrological agent responsible for cutting the Grand Canyon.
3.The Hoover Dam, a major engineering marvel, is structurally built across the main stem of the Rio Grande River.
Select the correct answer using the code given below:
Answer: A
Notes:
Explanation:
- Statement 1 is correct: The Rio Grande originates in southwestern Colorado (San Juan Mountains) and flows south to form the natural international political boundary separating Texas (USA) from Mexico before draining into the Gulf of Mexico.
- Statement 2 is correct: The Colorado River rises in northern Colorado (Rocky Mountains). Over millions of years, its fast-flowing, sediment-heavy waters have cut deep into the Colorado Plateau to form the Grand Canyon.
- Statement 3 is incorrect: The Hoover Dam is located on the Colorado River (along the border between Nevada and Arizona), creating Lake Mead, not on the Rio Grande.
