Chris Izworski’s daily Michigan trout report turns to the Black River this morning, where the first real hatch fishing of the season is taking shape against a river running leaner than its spring average.
The Flow Picture and What It Means
The Black is sitting at 653 cubic feet per second, which puts it near the 25th percentile for this date and well below the historical median of 982 cfs. For a UP freestone river in late April, this is actually welcome news. You’re not looking at the chocolate water and unfordable current that makes half the Upper Peninsula’s trout streams unfishable during spring snowmelt. The gauge height of 3.94 feet suggests the river is in a cooperating mood, at least for now.
That said, the systematic rating is fair, not excellent. This is a pick-your-spots day. The river will be wadeable, and the water will take a fly, but you’ll need to think deliberately about where the trout are holding and what they’re willing to eat. The cold water temperature typical of late April in this region means fish aren’t roaming far from structure. They’re concentrated in the slower water, the deeper runs, and the seams where current breaks offer a rest.
Hatch Timing and What’s Coming
The Hendricksons are on the cusp. You might see scattered duns in the 2 to 4 p.m. window today, particularly if the afternoon cloud cover persists and temperatures trend upward. But don’t expect a blitz. Water temperature will govern emergence more than the calendar does, and in the Porcupine Mountains area, that water is still very much in spring mode.
The midge hatch is active and reliable right now. Dead drifting a Mercury Midge or Zebra Midge number 20 under an indicator in the slower pools and eddies is honest work. Fish tight to the bottom where the water slows. This is not glamorous fishing, but it’s producing.
Little black stoneflies are also moving. You can dead drift their nymphs in the riffles or look for adults crawling out along the banks and skittering across the surface film. Pair a little black stonefly dry number 14 with the nymph as a dropper and you’re covering both possibilities.
Blue-winged olives will pop during overcast stretches, particularly if today stays gray and cool. Use a long fluorocarbon tippet, 5X to 6X, and fish a parachute BWO number 16 or a sparkle dun in the rise lanes where flat water meets riffles. If the hatch is heavy, drop an RS2 emerger number 18 just subsurface.
Evening Light and Dry-Fly Window
The evening golden hour runs from 7:26 p.m. to sunset at 8:56 p.m. That’s your best dry-fly window if the Hendricksons emerge as expected. The 13 hours and 55 minutes of daylight are growing noticeably longer now, and the quality of light in that final hour can be electric. If you’re making the drive to the Black, plan to be on the water through dusk.
Water Temperature and Seasonal Context
Temperature data isn’t available from the gauge today, but assume it’s still in the cold range. UP snowmelt feeds these rivers well into May. That cold water means the early brown stoneflies will be active, and swinging a wet fly or nymph through the riffles is a legitimate tactic. The elk hair caddis in brown, number 14, can also be skittered across the surface where stoneflies are present, particularly in the lower sections where the river mellows out.
Access and the River Itself
The Black River Harbor Recreation Area provides your main access point. County road access reaches multiple sections throughout the watershed. The river flows through stunning country near Bessemer, cutting through the Porcupine Mountains with waterfalls that remind you why this part of Michigan exists. It’s wild, it’s remote, and it holds both brook trout and browns. The brooks here are the fish you came for: dark-backed, willing, native. The browns are the bonus.
Fair conditions aren’t an invitation to drive four hours on the assumption of easy fishing. They’re an invitation to fish thoughtfully, to move slowly, and to fish the water you can see. Wade deliberately. Read the current. Most of the trout today are concentrated. Find the current seams, the deeper pools, the overhanging brush. Fish there.
Check current conditions and live gauge data at https://trout.chrisizworski.com.