Updated
Thunder Bay River
River
Use caution — flow is well above normal for this date
Use cautionUse caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby.
- Live streamflow is available but no water-temperature sensor is nearby.
- Flow is above the 75th percentile for Aug 22 (median 314 ft³/s over 60 years); fast water is the top river-drowning risk.
Use caution — flow is well above normal for this date
Use cautionUse caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby.
- Live streamflow is available but no water-temperature sensor is nearby. — USGS gauge 04133501, as of Aug 22, 12:30 PM gauge-local time
- Flow is above the 75th percentile for Aug 22 (median 314 ft³/s over 60 years); fast water is the top river-drowning risk. — USGS daily streamflow statistics, as of Aug 22, 12:30 PM gauge-local time
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
Flow is high for this date — above the 75th percentile for Aug 22 (median 314 ft³/s over 60 years).
No official beach-advisory feed for Michigan yet — follow posted signs and local guidance.
Live, provisional data from USGS gauge THUNDER BAY RIVER AT HERRON ROAD NEAR BOLTON, MI (8 mi away), as of Aug 22, 12:30 PM gauge-local time.
Weather at Thunder Bay River
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Frequently asked questions
- Where is Thunder Bay River?
- Thunder Bay River is a river in Michigan.
- Can you swim at Thunder Bay River?
- Use caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby. Checked August 22, 2026.
- How is Thunder Bay River rated?
- Thunder Bay River in Michigan has an average visitor rating of 4.8 out of 5, based on 21 reviews.
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Best Times to Visit
- ›Check water levels and current conditions before visiting
- ›Wear life jackets when on the water
- ›Be aware of rapids and potential hazards
- ›Respect private property along riverbanks
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