Black HUC8 07040007
A 5,895 km² sub-basin of the Upper Mississippi region in 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
63
Moderate
Drought index
210
Severe
Area in D2+
21.34%
0% exceptional (D4)
Gauges below normal
33%
of 3 reporting
Median flow
69%
p29 of record
Water assets
5,016
0 springs · 2,983 wells
USGS gauges (3)
- BLACK RIVER DS ST HWY 54 AT BLACK RIVER FALLS, WI053813595188 cfsp17 · below normal
- BLACK RIVER NEAR GALESVILLE, WI05382000492 cfsp29 · normal
- BLACK RIVER AT NEILLSVILLE, WI0538100075 cfsp41 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 210 | 21.34 | 1/3 | p29 |
Top water assets
- 66Hatfieldreservoir
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- 65Rock Creek Flowage Damreservoir
- 65Trowsreservoir
- 65Millstonreservoir
- 65Clark County 2reservoir
- 65Bradowreservoir
- 65Black River Fallsreservoir
- 65Meyer Lot 21reservoir
- 65Rock Creekriver