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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
40
Stressed
Drought index
—
—
Area in D2+
—
Gauges below normal
100%
of 1 reporting
Median flow
26%
p11 of record
Water assets
1,088
5 springs · 1,046 wells

USGS gauges (1)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-10-20——1/1p11
2026-10-19——1/1p14
2026-10-18——1/1p17
2026-10-17——1/1p21
2026-10-16——1/1p20
2026-10-15——1/1p9
2026-10-14——1/1p16
2026-10-13——1/1p9
2026-10-12——1/1p6
2026-10-11——1/1p6
2026-10-10——1/1p6
2026-10-09——1/1p7
2026-10-08——1/1p7
2026-10-07——1/1p7

Top water assets