Stillwater HUC8 17010210
A 2,018 km² sub-basin of the Pacific Northwest region in MT. 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
72
Moderate
Drought index
100
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
137%
p75 of record
Water assets
537
4 springs · 210 wells
USGS gauges (2)
- Stillwater River at Lawrence Park, at Kalispell12365700123 cfsp75 · above normal
- Whitefish River near Kalispell MT1236600067 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 100 | 0 | 0/1 | p75 |
Top water assets
- 69Stillwater Riverriver
- 69Stillwater Riverriver
- 67West Fork Swift Creekriver
- 67Griffin Creekriver
- 67Swift Creekriver
- 67Swift Creekriver
- 67Good Creekriver
- 67Whitefish River Near Kalispell Mtriver
- 67Stillwater River At Lawrence Park, At Kalispellriver
- 67Lefthand Creekriver