GRAND PORTAGE RIVER AT GRAND PORTAGE MN

MINNESOTA47.9636°N, -89.6834°W Updated 38 d ago

FLOW RATE

10cfs

GAUGE HT

16.02ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

10cfs 31.3% vs avg

Optimal band: 2–2 cfs

PERIOD HIGH

133cfs

PERIOD LOW

1cfs

RUNNABLE

49%

last 1 year in band

Gauge Height

16.02ft

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47.9636, -89.6834

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DATA · USGS · NOAA · NWSUPDATED 2026-09-09 00:00 UTC

Site #04010510·USGS

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