THUNDER BAY RIVER AT HERRON ROAD NEAR BOLTON, MI

THUNDER BAY RIVER MI USGS

THUNDER BAY RIVER AT HERRON ROAD NEAR BOLTON, MI (04133501) is a real-time streamflow monitoring station on the THUNDER BAY 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. 8 fish species are associated with this station in public fish records.

USGS site number: 04133501
Operated by: U.S. Geological Survey
State: MI
Coordinates: 45.1242, -83.6355

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.

Northern Pike Open · Harvest allowed within limits Open all year Details Close
- Open all year
  
  Daily limit
  2
  
  Size rule
  24"
  
  Official rule · retrieved Aug 2, 2026
Blackside Darter No season data
Central Mudminnow No season data
Central Stoneroller No season data
Creek Chub No season data
Green Sunfish No season data
Johnny Darter No season data
Rainbow Darter No season data

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

Thunder Bay River At Herron Road Near Bolton, Mi has 8 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.

Species include: Central Stoneroller (Campostoma anomalum), Northern Pike (Esox lucius), Rainbow Darter (Etheostoma caeruleum), Johnny Darter (Etheostoma nigrum), Green Sunfish (Lepomis cyanellus), and 3 others.

Central Stoneroller Campostoma anomalum
Northern Pike Esox lucius
Rainbow Darter Etheostoma caeruleum
Johnny Darter Etheostoma nigrum
Green Sunfish Lepomis cyanellus
Blackside Darter Percina maculata
Creek Chub Semotilus atromaculatus
Central Mudminnow Umbra limi

Where these records come from

Evidence: Community observations nearby; Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
Records: 8 species; from 10 individual records
Observed: Sep 8, 2022 – May 16, 2026; 10 dated records

Sources

iNaturalist research-grade fish observations — 10 records

🪰 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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