[Answer] What is the oldest river in the U.S.?

Step 1 : Introduction to the question "What is the oldest river in the U.S.?"

...1. New River 2. Snake River 3. Mississippi River 4. Colorado River

Step 2 : Answer to the question "What is the oldest river in the U.S.?"

New River - The name “New River” is pretty ironic considering that — with an estimated age between 260 million to 325 million years old — scientists believe it to be the oldest in North America. Flowing from the Blue Ridge Mountains in North Carolina to West Virginia, the 320-mile river is the namesake for New River Gorge National Park and Preserve. To find the age of a river, scientists use several geological clues, including how deep the riverbed cuts, the size of the “meanders” (curves), the age of the sediments found in the water, and the age of the rock in the valley surrounding it. Along with the French Broad and the Kanawha Rivers, the New River system may very well predate the continent of North America itself.:

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