Saint Croix River HUC8 01050001
A 4,262 km² sub-basin of the New England region in CN, ME. 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
51
Moderate
Drought index
199
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
67%
of 3 reporting
Median flow
66%
p10 of record
Water assets
964
0 springs · 231 wells
USGS gauges (3)
- Grand Lake Stream at Grand Lake Stream, Maine01019000125 cfsp8 · much below normal
- St. Croix River at Baring, Maine01021000836 cfsp10 · much below normal
- St. Croix River at Vanceboro, Maine01018500520 cfsp27 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 199 | 0 | 2/3 | p10 |
Top water assets
- 65Little Simsquish Brookriver
- 65Upper Pug Streamriver
- 65Mud Lake Streamriver
- 65Mud Lake Streamriver
- 65St. Croix Riverriver
- 65Little Riverriver
- 65St. Croix Riverriver
- 65Dennis Streamriver
- 65St. Croix Riverriver
- 65Monument Brookriver