How does the Colorado River differ from the Colorado River in Texas?

The two rivers share a name due to early Spanish explorers describing their reddish, silt-heavy waters as colorado, meaning "colored" or "reddish". However, they are distinct geographical entities:1

• The Western Colorado River: This major North American river rises in the Rocky Mountains of Colorado and flows 1,450 miles southwest into the Gulf of California. It drains 246,000 square miles across seven states and is a vital "Lifeline of the Southwest," powering major dams for hydroelectric energy and irrigation.21
• The Texas Colorado River: This river lies entirely within Texas, rising on the Llano Estacado and flowing 862 miles southeast to Matagorda Bay. It drains 39,900 square miles and is characterized by the Highland Lakes, a system of six reservoirs used for flood control, power, and recreation.31

While the western river was once known as the Grand River, it was renamed by Congress in 1921 to align with the state of Colorado.1