South Platte Headwaters HUC8 10190001
A 4,155 km² sub-basin of the Missouri region in CO. 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
28
Critical
Drought index
390
Extreme
Area in D2+
100%
21.41% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
46%
p8 of record
Water assets
1,748
59 springs · 343 wells
USGS gauges (1)
- TARRYALL CREEK AT UPPER STATION NEAR COMO, CO066969805 cfsp8 · much below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 390 | 100 | 1/1 | p8 |
Top water assets
- 69Rich Creekriver
- 69Tarryall Creekriver
- 69Hay Creekriver
- 69Beaver Creekriver
- 69Twin Creekriver
- 69South Fork South Platte Riverriver
- 69Trout Creekriver
- 69Salt Creekriver
- 69Tarryall Creek At Upper Station Near Como, Coriver
- 69Beaver Creekriver