Ontonagon River Lake Run — Salmon, Steelhead, Brown Trout
Peak run · Coho salmonas of 1 October 2026
23.7 miles of run water on the Ontonagon River, from Lake Superior up to
the end of the mainstem.
6 species run it, on windows
curated from MDNR guidance.
The colour is this river's run stage today, read off MDNR
run-timing guidance. Where along the corridor the fish are is not
modelled here — only the sixteen rivers the staging estimator covers
carry that.
Drawn 1 October 2026, north up, and it is a map of the river rather
than of the lake it runs from.
23.7corridor miles
42NHD reaches
6species that run
Lake Superiorthe lake they come from
Six species run the Ontonagon, more than any of its Superior neighbours, over a 23.74-mile corridor across 42
NHD reaches — pierheads to 0.73, river mouth to 2.37, lower river the rest of the way. No barrier closes it;
NID lists no structure on this mainstem, so the corridor runs to the end of it, a claim rather than a gap.
Steelhead are what these rivers are fished for, Sept–May, peaking late April into May — later than downstate,
because the ice goes out later. Coho run Sept–Oct, and pink salmon Aug–Sept with a September peak, naturalised
in Superior since the 1956 Thunder Bay escape and heaviest in odd-numbered years. Coaster brook trout enter
Sept–Oct between 45 and 55°F and are largely protected; coaster browns run Sept–Nov, 45 to 58°F, peak October.
Lake trout make a fall movement into the lower river, Oct–Nov, 42 to 55°F — the tributary edge of a fishery
that spawns mainly on the lake's reefs, and under its own Great Lakes seasons and limits.
The questions about this river
One page each, answered from the same records as this one.
Each window is calendar guidance curated from the state's own run-timing prose, not a
regulation and not an observation. The stage beside it is this site's reading of that
window against 1 October 2026.
Coho salmon — Sept–Octpeak Sep–Oct
Peak run.
Peak late September into October.
Steelhead — Sept–Maypeak Apr–May
First runners.
The run these rivers are fished for. A fall push from September and the spring run that peaks late April into May — later than downstate, because the ice goes out later.
Lake-run brown trout — Sept–Novpeak Oct45–58°F
First runners.
Coaster browns — the lake-run ecotype naturalised on this shore. Runs with the autumn steelhead; peak October.
Pink salmon — Aug–Septpeak Sep
Tail-off.
Naturalised in Superior since the 1956 Thunder Bay escape and heaviest in odd-numbered years; peak early September.
Lake-run brook trout — Sept–Oct45–55°F
Tail-off.
Coaster brook trout, running the stream mouths in early autumn. Superior's own fish and largely protected — check the Fishing Guide before keeping one.
Lake trout — Oct–Novpeak Oct–Nov42–55°F
Staging, 1 day out.
A fall movement out of the lake into the lower river; peak mid-October to mid-November. Not a salmon run in scale — lake trout spawn mainly on the lake's own reefs and this is the tributary edge of that.
The ceiling
No barrier inside the run. The corridor runs to the end of the mainstem, which is a claim
from the National Inventory of Dams rather than a gap in the data — the NID lists no
structure on this river.
No barrier inside the run. NID lists no structure on this mainstem, so the corridor runs to the end of it — a claim, not a gap.
The run water, mouth to ceiling
Zone
What it is
River miles
Pier
the pierheads and the harbour mouth
0.0–0.7
Mouth
the river mouth
0.7–2.4
Lower
the lower river
2.4–23.7
River miles from the harbour mouth, walked up the NHDPlus HR mainstem. Fish arrive at the
bottom of this table and work up it as the river cools and rises.
Access
No state boating access site falls inside this corridor's box. That is the record saying
nothing, not this page saying there is no way in — the public land layer on the live map
is the better answer for a river fished from the bank.
Great Lakes tributary rules are their own rules: seasons, gear and possession on run water
differ from the inland trout regulations, and they differ by river and often by reach.
Michigan's regulation summary is here, and the
state's own guide is the regulation.
Coasters are a managed restoration fishery under special catch-and-release regulations on much of this shore, and the rules differ river by river. Read the state guide for the water you are on.
Lake trout carry their own seasons and bag limits in the Great Lakes and their tributaries, and they are not the trout limits.
Tackle
General guidance by species, not by river — there is no record of what a given river fishes
best with, and a page that invented one would be worse than a page that says so.
Coho salmon
Spinning: a medium 7'–8'6" rod, 10–14 lb line, small spoons and spinners. Coho chase, and a moving bait outfishes a still one.
Steelhead
Float fishing: a long 10'6"–13' rod, 8–12 lb main line, spawn bags, beads or jigs under a slip float — the method that covers a run without wading it.
Lake-run brown trout
Spinning: a medium 7'–8' rod, 8–12 lb line, minnow plugs and spoons fished at dusk and after dark, which is when these fish move.
Pink salmon
Light spinning tackle is enough — a 6'6"–7' rod and 6–10 lb line. Small pink and orange spinners, spoons and flies.
Lake-run brook trout
Catch and release, and tackle chosen to make that survivable: barbless hooks, a net that keeps the fish in the water, and heavy enough line to land it fast rather than play it out.
Lake trout
Spinning: medium-heavy tackle, 12–17 lb line, spoons and heavy jigs worked deep in the lower river and off the pierheads.
Nearby run rivers
The next corridors up and down this shore, nearest first.