How many feet does st Lawrence have?

The St. Lawrence River, which flows through Canada and the United States, is approximately 1,900 miles (3,058 kilometers) long. However, if you're asking about the St. Lawrence Seaway, it has a depth of about 27 feet (8.2 meters) in its navigable channels, allowing for the passage of large vessels. If you meant something else by "feet," please clarify!