Step 1 : Introduction to the question "What is the deepest river in the United States?"
...The deepest river in the United States is the Hudson River. Located primarily in the state of New York, the Hudson River reaches depths of up to 216 feet. This significant depth occurs around the area known as the Hudson Canyon, a submarine canyon located at the river's mouth. The Hudson River stretches for approximately 315 miles from the Adirondack Mountains to New York Harbor, where it empties into the Atlantic Ocean. Its depth and strategic location have made it an important waterway for transportation and trade throughout American history.