Upper Wisconsin HUC8 07070001
A 5,646 km² sub-basin of the Upper Mississippi region in MI, WI. 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
42
Stressed
Drought index
301
Extreme
Area in D2+
99.6%
0% exceptional (D4)
Gauges below normal
100%
of 2 reporting
Median flow
53%
p19 of record
Water assets
1,439
2 springs · 506 wells
USGS gauges (3)
- WISCONSIN RIVER @ RAINBOW LAKE NR LAKE TOMAHAWK,WI05391000349 cfsp18 · below normal
- SPIRIT RIVER AT SPIRIT FALLS, WI053935007 cfsp20 · below normal
- TOMAHAWK RIVER @ STATE HIGHWAY 70 NEAR MINOCQUA,WI0539210217 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 301 | 99.6 | 2/2 | p19 |
Top water assets
- 66Jerseyreservoir
- 65South Dike -Willowreservoir
- 65Spruce Lakereservoir
- 65Pickerel Control Structurereservoir
- 65Little St Germainreservoir
- 65Minocquareservoir
- 65Lower Nine Milereservoir
- 65North Pelicanreservoir
- 65Rhinelanderreservoir
- 65Little Rice Riverreservoir