Red Rock HUC8 10020001
A 5,995 km² sub-basin of the Missouri region in ID, MT. 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
66
Moderate
Drought index
33
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
42%
p22 of record
Water assets
1,147
55 springs · 87 wells
USGS gauges (2)
- Red Rock R bl Lima Reservoir nr Monida MT0601250013 cfsp22 · below normal
- Red Rock Cr ab Lakes, nr Lakeview, MT06006000no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 33 | 0 | 1/1 | p22 |
| 2026-10-20 | 33 | 0 | 1/1 | p21 |
| 2026-10-19 | 33 | 0 | 1/1 | p20 |
| 2026-10-18 | 33 | 0 | 1/1 | p17 |
| 2026-10-17 | 33 | 0 | 1/1 | p18 |
| 2026-10-16 | 33 | 0 | 1/1 | p16 |
| 2026-10-15 | 66 | 0 | 1/1 | p15 |
| 2026-10-14 | 66 | 0 | 1/1 | p16 |
| 2026-10-13 | 66 | 0 | 1/1 | p17 |
| 2026-10-12 | 66 | 0 | 1/1 | p18 |
| 2026-10-11 | 66 | 0 | 1/1 | p13 |
| 2026-10-10 | 66 | 0 | 1/1 | p13 |
| 2026-10-09 | 66 | 0 | 1/1 | p15 |
| 2026-10-08 | 152 | 0 | 1/1 | p12 |
Top water assets
- 69Burnt Willow Creekriver
- 69Big Sheep Creekriver
- 69Long Creekriver
- 69Sage Creekriver
- 69Bean Creekriver
- 69Red Rock Cr Ab Lakes, Nr Lakeview, Mtriver
- 69Big Sheep Creekriver
- 69Red Rock R Bl Lima Reservoir Nr Monida Mtriver
- 69Horse Prairie Creekriver
- 69Horse Prairie Creekriver