Consider thes 15 river systems that all have their headwaters in Colorado:
There are 158 named rivers in the state.
The Colorado River is an 862-mile long river in the state of Texas. Austin, the capital city in Texas, is located on the Colorado River.
Austin is the state capital of Texas. It is located on the Colorado River.
Texas
Actually its Colorado!
Colorado River, Little Colorado River, Gila River, and Bill Williams River
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The Grand Canyon, carved by the Colorado River, is located in the U.S. state of Arizona.
It flows from Colorado through Wyoming into Nebraska.
Colorado State University is located in Fort Collins, Colorado.
The Colorado River is the longest river in the state of Arizona. The Colorado River flows through the Grand Canyon.
It is Austin, Texas but it is not the Colorado River that begins in Colorado and flows through the Grand Canyon to the Sea of Cortez. It is the Colorado River of Texas whose drainage basin is in Texas and New Mexico.
It spans the Colorado River between Arizona and Nevada so it is actually located in both States since the "center" of the river is the State borders.