Chris Izworski Reporting: September 26, 2026
Chris Izworski, reporting from Michigan on the current state of the Cisco Branch Ontonagon, has to start with the hard truth: the river is essentially unfishable today. The USGS gauge is running at zero cfs, or effectively zero, which represents about 2 percent of the historical median flow for this date. To put that in perspective, the 25th percentile for late September sits around 2 cfs. We are well below even a pessimistic baseline.
This is the kind of low water that stops a freestone river cold. The Cisco Branch drains Cisco Lake through the Ottawa National Forest before joining the Ontonagon, and at this flow rate, what little water exists is scattered into disconnected pools with minimal current. The fish are there, certainly. The brook trout in the headwaters and the brown trout that dominate lower stretches do not simply vanish when the creek dries to a trickle. But they are in shutdown mode, tucked deep into whatever holding water remains, metabolically conservative, and decidedly uninterested in your small flies.
The Michigan Trout Report rating nails it: Tough. Long leader, small fly is the technical prescription, but the honest prescription is patience.
The Reality of September Low Water
September is ordinarily the finest month to fish Michigan’s UP streams. The heat of August breaks, water cools, brown trout begin thinking about spawning runs, and the crowds thin to almost nothing. The Cisco Branch, accessed via Ottawa National Forest roads off US-2, becomes a genuine solitude proposition in fall. Except when it runs like this.
Late summer drought has been the story across much of the western UP, and the Cisco Branch responds quickly to dry conditions. At zero flow, the stream is essentially a series of stagnant pools connected by seepage. Even the most technically proficient angler with a 7X tippet and a size 20 Trico Spinner will find that the water has become hostile to fly fishing. Fish do not rise in water that isn’t moving. They do not feed confidently in water so thin that every shadow registers as a predator.
Water temperature data is unavailable from the gauge today, but you can trust that whatever cold is coming from Cisco Lake at this flow rate is being absorbed into the substrate and the air. The creek will warm through the day in the sun and cool again tonight, but it will not be a temperature issue that improves things. At this flow, temperature becomes almost irrelevant.
When to Make the Drive
The forecast offers a potential window. Tuesday, September 29, shows a 50 percent chance of rain with highs near 69 degrees. That precipitation, combined with the cool overnight lows holding in the upper 40s and low 50s, could finally push some flow into the system. Not a sure thing, but something worth watching. The weekend through Monday stays dry and warm, which will do nothing to improve these conditions. If anything, today’s sunny 72-degree weather will simply continue to bake whatever little water remains.
The right move is to check the gauge before committing to the drive. Watch https://michigantroutreport.com for live flow data. If it stays at or near zero through Monday, wait for rain. If you see the needle move toward 10 or 15 cfs in the next few days, that becomes a signal worth acting on. The Cisco Branch at 15 to 25 cfs, especially with a cool overnight and some overcast conditions, becomes honest water again.
The hatches are happening, certainly. Baetis emerge during overcast periods and midday, small BWO patterns in size 16 on 5X or 6X will fool selective fish when the light is right. Terrestrials along the grassy banks and cutbanks are worth throwing, especially in the early afternoon. The fall caddis are on the water in the afternoons, skating an Orange Elk Hair Caddis #14 through the runs and riffles usually draws strikes.
But all of that presupposes water. Right now, there is none worth fishing.
Check the gauge at https://michigantroutreport.com for live data before you drive.