Chris Izworski’s Michigan Trout Daily weekly overview for Sunday, August 16: here is what the gauges actually show across the state right now. We are deep into August, and the data tells a story of summer-stretched rivers running low and clear across most of Michigan, with a few northern pockets holding near-normal flows. This is stealth week. Small flies, early mornings, and patience define the game plan for the next seven days.
The Upper Peninsula is experiencing the most dramatic low-water pattern. Of 24 gauged rivers reporting, zero are running high and zero are blown out, but the lows are severe. The Cedar River has cratered to just 21 percent of median, making it essentially a technical creek for the remainder of the week. The Ford River sits at 39 percent, the Sturgeon River at 38 percent, and the Presque Isle at 47 percent. These are not the rivers to chase this week; they will be too thin and too warm for sustained success. The Black River in the UP is holding at 46 percent. On the brighter end of the UP spectrum, the Ontonagon River is sitting at a reasonable 84 percent of median, the Silver River at a solid 107 percent, and the Salmon Trout River at 97 percent. The Tahquamenon River is actually running healthily at 123 percent. Water temperatures across the UP range from a refreshing 56 degrees on the East Branch Salmon Trout River to a warm 70 degrees on the Escanaba River. The coldest water will hold the most active fish; seek the Salmon Trout system if you want both decent flows and cold temperatures. Four gauges in the UP are offline, which means conditions on some rivers remain unknown.
The Northern Lower Peninsula presents a more mixed picture and offers the week’s best opportunities. The region includes the state’s heaviest concentration of gauged trout rivers, and the data is encouraging. The AuSable River, Michigan’s marquee fishery, is running at 116 percent of median; the Manistee is at an excellent 129 percent; the Pere Marquette is holding steady at 98 percent; and the Jordan River is at 107 percent. These are fishable flows for early August, and they are cool enough for trout to feed through the morning Trico hatches. The Thunder Bay River is running high at 146 percent, and the Pine River near Oscoda is at 145 percent, both near the threshold where summer low-water technique becomes less critical. The Dowagiac River is also elevated at 140 percent. On the low end, the Maple River and the mid-Michigan Pine River are both struggling at 46 and 47 percent respectively; avoid these this week. The Muskegon River is running at 83 percent, adequate but not ideal. Water temperatures in the Northern Lower Peninsula range from a cool 59 degrees on the Pine River to 73 degrees on the Muskegon, suggesting that elevation matters here and that cooler tribs feeding the main stems will be your best bet for finding actively feeding trout. Eight gauges are offline in this region. The Northern Lower Peninsula is where your week’s best fishing opportunity lives.
The Southern Lower Peninsula remains ungauged. Anglers on southern Michigan rivers do not have real-time flow data from the Michigan Trout Report network and will need to rely on visual assessment and local reports to plan the week. Many southern systems are small and warmish by August standards regardless of recent precipitation, so focus on early mornings and shade.
Where I would go this week
Fish the Manistee River. It is running at 129 percent of median with water cool enough for August Tricos and decent August fishing. Start before dawn, work small dry flies in the film, and expect good conditions through the morning hours. If the Manistee is crowded, the AuSable at 116 percent of median will fish equally well and carries the reputation for handling pressure. Both rivers are in the Northern Lower Peninsula zone that shows genuine opportunity right now. Avoid the Cedar River, the Ford River, the Sturgeon River in the UP, and the Maple River in the north-central Lower Peninsula; they are too low. The UP’s coldest water is on the Salmon Trout system at 56 degrees, but flows there are more marginal; the Manistee gives you both cold water and volume.
For current conditions on individual rivers, visit https://michigantroutreport.com.