Shell Rock HUC8 07080202
A 2,798 km² sub-basin of the Upper Mississippi region in IA, MN. 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
81
Healthy
Drought index
35
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
151%
p66 of record
Water assets
1,642
0 springs · 1,117 wells
USGS gauges (1)
- Shell Rock River at Shell Rock, IA05462000668 cfsp66 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 35 | 0 | 0/1 | p66 |
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