Chris Izworski’s daily Michigan trout report turns to the Black River this morning, where the Upper Peninsula’s most scenic freestone fishery is running near its historical median for late April. The USGS gauge shows 810 cubic feet per second, which sits at 82 percent of the 30-year median for this date. That’s genuinely good news for a UP river in spring snowmelt season, when blown-out conditions are the rule rather than the exception.
This is the window when the Black River becomes worth the drive from the Lower Peninsula. The Porcupine Mountains backdrop hasn’t changed since last week, but the fishing has. The water temperature gauge isn’t reporting today, but the calendar and snowpack suggest we’re in that transitional moment where the heavy spring runoff is beginning to settle and the first true hatches of the year are gathering.
Flow and What It Means
At 810 cfs, the Black is running above the 25th percentile but well below the median. The gauge height of 4.29 feet confirms that while there’s water moving, you can still get your feet down in most sections without fighting a brown soup tide. This is the sweet spot for late April on a remote UP freestone stream. The river isn’t low, but it’s not unreadable either.
What matters more than the absolute number is the trend. The UP’s deep snowpack releases slowly through April and into early May. If you’ve been watching the Black, you know this week’s flow represents a brief window of opportunity before the next warm spell or rain event pushes things up again. The forecast will determine whether this hold lasts or breaks.
Hendricksons, Stoneflies, and the First Real Dry Fly Fishing
The Black River supports the hatches that make spring memorable: Hendricksons are coming into the forecast window any day now, with the classic emergence peaking in the afternoon from 2 to 4 p.m. Little Black Stoneflies are already active along the banks where nymphs crawl out. Early Brown Stoneflies are pushing through the riffles. These are not the marginal gnats and slim pickings of early April. This is the beginning of the season that makes you drive six hours to the UP.
Start with nymphs in the broken water. Hendrickson nymphs and Little Black Stonefly nymphs in sizes 12 and 14 dead-drifted near bottom will connect you to brook and brown trout that are ready to feed hard after a long winter. The smaller midges, still present in the slow pools and eddies, remain a reliable backup pattern. Mercury and Zebra Midges in size 20 under an indicator in slack water will take fish when nothing else is moving.
If the afternoon clouds hold and the light stays soft, watch for rises during the Hendrickson hatch. The classical dry fly fishing you’ve been anticipating since March becomes real. Parachute and Sparkle Dun Hendricksons in size 12 will draw rises from the flats and slower runs. Blue-Winged Olives in size 16 will show up on overcast stretches. The evening golden hour runs from 7:25 p.m. to 8:55 p.m., a good 90 minutes to work the water with dry flies if the hatch is pushing.
Access and the Remote Fishery
The Black River Harbor Recreation Area and multiple county road access points give you options to spread out and escape the crowds that hammer the Lower Peninsula streams in spring. This is a wild, remote brook trout fishery first, with brown trout providing depth and size. The water is cold and the current is honest. Wade carefully and respect the Porcupine Mountains terrain.
Check the current DNR regulations before you go. General trout regulations apply, but always verify any special UP rules that may affect your day.
The Rating and the Drive
The Michigan Trout Report rates conditions as Fishing Well. That’s the assessment that turns a maybe into a yes. This river is worth the drive this week. The flow is cooperative, the hatches are beginning, and you have legitimate dry fly fishing ahead of you if the weather cooperates. Plan to fish through the afternoon into the evening golden hour. Bring both nymphs and dries. Expect to catch brook trout and brownies in water that looks like a postcard.
The snow is melting, the stream is clearing, and spring is actually arriving on the Black River. That window doesn’t stay open long in the UP.
Live gauge data and hatch updates at https://trout.chrisizworski.com.