Waterlands
St. Clair River
USGS · 04159130
ST. CLAIR RIVER
USGS · 04159130LIVE

ST. CLAIR RIVER AT PORT HURON, MI

PORT HURON, MI42.9870°N, -82.4246°W Updated 20 hr ago
FLOW RATE
197,245cfs
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
197,245cfs 11.7% vs avg
Optimal band: 162,669–220,081 cfs
PERIOD HIGH
217,625cfs
PERIOD LOW
121,325cfs
RUNNABLE
92%
last 1 year in band
Precipitation History
Your History · ST. CLAIR RIVER AT PORT HURON, MI

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Station Location

42.9870, -82.4246
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DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC
Site #04159130·USGS

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