The Au Sable and Manistee headwaters, blue-ribbon water
Grayling sits at the top of two of Michigan's best trout systems, the Au Sable and the upper Manistee. The Holy Water stretch of the Au Sable is flies-only, catch-and-release, and cold enough to hold trout through the summer, which is why anglers plan whole weekends around it.
Late spring and early summer bring the hatches the Au Sable is famous for, and evenings in June are the classic window. Cold headwaters keep the fishing honest through the warm months when other rivers fade. Check the current report before you commit a weekend, water temperature and flow move the fishing more than the calendar does.
Grayling is the hub, with state forest campgrounds strung along the river for anyone who wants to wake up on the water. The trout report and stream map below carry current conditions and the access points; the Au Sable field map adds the on-the-ground detail.
This is the point of the whole thing: live data, not a static page. These tools carry the current conditions for this trip.
Two systems cover almost every public campsite in the state, and both let you book ahead rather than gamble on a walk-up.
State park and DNR sites reserve through the Michigan system, often as far as six months in advance, so popular weekends fill early. National forest ground in the Huron-Manistee and Hiawatha, and backcountry permits along Lake Superior, go through Recreation.gov. The state forest campgrounds along the Au Sable put you on the water at first light. Reserve where you can and scout the access points on the field map before you drive up.