Au Sable River, South Branch Professional Review and Guide
"A pleasant, slow-moving stream that is popular with canoeists and fly fishermen alike. Location: Begins at Lake St. Helen in Northern Roscommon County and flows into southeastern Crawford County before joining the mainstream of the fabled Au Sable River. The South Branch of the Au Sable River is an appealing stream for paddlers looking for an undemanding and scenic float.
It proceeds at a sleepy pace for its entire length, passing through the heart of the Mason Tract Wilderness Area before joining with the Au Sable mainstream. The Mason Tract is a sanctuary of several thousand acres that was bequeathed to the state back in the mid-1950s by George Mason, an auto executive and outdoor enthusiast. Per Mason’s instructions, the entire area—including the river corridor —has been kept in a natural state for successive generations of paddlers and anglers to enjoy. Today, its woodlands of cedar, pine, and hardwoods support good populations of deer, woodcock, ruffed grouse, and other wildlife."