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Lake Superior HUC8 04180000

A 84,944 km² sub-basin of the Great Lakes region in CN, MI, MN, WI. Drought coverage is from the US Drought Monitor; streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score
70
Moderate
Drought index
Area in D2+
Gauges below normal
0%
of 1 reporting
Median flow
63%
p32 of record
Water assets
1,088
5 springs · 1,046 wells

USGS gauges (1)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-09-070/1p32

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