Upper St. Croix HUC8 07030001
A 5,247 km² sub-basin of the Upper Mississippi region in MN, WI. Drought coverage is from the US Drought Monitor (map of 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
25
Critical
Drought index
394
Extreme
Area in D2+
100%
13.04% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
53%
p8 of record
Water assets
3,030
6 springs · 2,252 wells
USGS gauges (1)
- ST. CROIX RIVER NEAR DANBURY, WI05333500584 cfsp8 · much below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-22 | 394 | 100 | 1/1 | p8 |
| 2026-10-21 | 394 | 100 | 1/1 | p8 |
| 2026-10-20 | 394 | 100 | 1/1 | p8 |
| 2026-10-19 | 394 | 100 | 1/1 | p9 |
| 2026-10-18 | 394 | 100 | 1/1 | p9 |
| 2026-10-17 | 394 | 100 | 1/1 | p9 |
| 2026-10-16 | 394 | 100 | 1/1 | p8 |
| 2026-10-15 | 394 | 100 | 1/1 | p7 |
| 2026-10-14 | 394 | 100 | 1/1 | p7 |
| 2026-10-13 | 394 | 100 | 1/1 | p7 |
| 2026-10-12 | 394 | 100 | 1/1 | p8 |
| 2026-10-11 | 394 | 100 | 1/1 | p8 |
| 2026-10-10 | 394 | 100 | 1/1 | p8 |
| 2026-10-09 | 394 | 100 | 1/1 | p8 |
Top water assets
- 66Clam Riverreservoir
- 66Clam Fallsreservoir
- 65Lake Claytonreservoir
- 65Loon Lakereservoir
- 65Harth F Pondreservoir
- 65Godfrey Lakereservoir
- 65Danburyreservoir
- 65Saint Croixreservoir
- 65Olson Meadows Flowagereservoir
- 65Minervareservoir