There are many swimming holes and opportunities for tubing and canoeing in the clear rivers and springs in southeastern Missouri - in the Ozark Mountains .Swimming is the sport of playing in the water. A swimming hole is a place in a river, stream, creek, spring or other body of water that is deep enough to swim in. Most of the time a swimming hole is located in moving water, but people can also swim in the ocean and in lakes. This section of Backcountry Secrets is our list of places to swim in the outdoors.