The deepest river in the United States is the Hudson River. It reaches depths of up to 200 feet (approximately 61 meters) in some areas. The Hudson River is located in the northeastern part of the country and flows through the state of New York. Its depth is influenced by its tidal nature, especially in the lower stretches near New York City, where it connects to the Atlantic Ocean. The river’s depth has made it an important waterway for transportation and commerce throughout history.