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Upper Little Missouri HUC8 10110201

A 8,994 km² sub-basin of the Missouri region in MT, ND, SD, WY. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score
59
Moderate
Drought index
368
Extreme
Area in D2+
95.62%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
30%
p26 of record
Water assets
3,384
2 springs · 474 wells

USGS gauges (1)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-09-0736895.620/1p26

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