ONTONAGON RIVER NEAR ROCKLAND, MI

ONTONAGON RIVER MI USGS

ONTONAGON RIVER NEAR ROCKLAND, MI (04040000) is a real-time streamflow monitoring station on the ONTONAGON RIVER in MI, operated by the U.S. Geological Survey. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. One fish species is associated with this station in public fish records.

USGS site number
04040000
Operated by
U.S. Geological Survey
State
MI
Coordinates
46.7208, -89.2071

Live conditions & history

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7-day weather

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Fishing regulations

MI state-wide default default

Default area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.

MI state-wide default default only. Water-specific, national-park, sanctuary, licence, and in-season exceptions may apply.

Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-09-11 in America/Detroit

Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the Michigan Fishing Regulations before fishing.

Fish recorded near this station

Community observations nearby

Ontonagon River Near Rockland, Mi has 1 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.

Species include: Black Crappie (Pomoxis nigromaculatus).

Where these records come from

Evidence
Community observations nearby
Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
Records
1 species
from 1 individual record
Observed
Apr 24, 2026 – Apr 24, 2026
1 dated record

Sources

🪰 Hatch Calendar

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A month-by-month hatch calendar for this river — which insects are emerging now, hook sizes, and patterns to fish — collected from fly shops and guides who know it.

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