Vermillion HUC8 10170102
A 5,488 km² sub-basin of the Missouri region in SD. 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
46
Stressed
Drought index
172
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 2 reporting
Median flow
27%
p12 of record
Water assets
5,697
14 springs · 4,631 wells
USGS gauges (3)
- EAST FORK VERMILLION RIVER NEAR PARKER, SD064786003 cfsp7 · much below normal
- VERMILLION RIVER NEAR VERMILLION,SD0647901023 cfsp17 · below normal
- WEST FORK VERMILLION RIVER NEAR PARKER, SD06478690no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 172 | 0 | 2/2 | p12 |
| 2026-10-20 | 172 | 0 | 0/1 | p99 |
| 2026-10-19 | 172 | 0 | 1/1 | p7 |
| 2026-10-18 | 172 | 0 | 1/1 | p9 |
| 2026-10-17 | 172 | 0 | 1/1 | p10 |
| 2026-10-16 | 172 | 0 | 2/2 | p12 |
| 2026-10-15 | 172 | 0 | 2/2 | p11 |
| 2026-10-14 | 172 | 0 | 2/2 | p11 |
| 2026-10-13 | 172 | 0 | 2/2 | p11 |
| 2026-10-12 | 172 | 0 | 2/2 | p13 |
| 2026-10-11 | 172 | 0 | 2/2 | p13 |
| 2026-10-10 | 172 | 0 | 2/2 | p12 |
| 2026-10-09 | 172 | 0 | 2/2 | p12 |
| 2026-10-08 | 173 | 0 | 2/2 | p12 |
Top water assets
- 76Vernon J Hoferwell
- 76Freeburg Limited Partnershipwell
- 76Patti Bancroftwell
- 76Glyndon Knutsonwell
- 76City Of Montrosewell
- 76Lowell G Andersenwell
- 76Tm Rural Water Districtwell
- 76Brian D Smitwell
- 76Lowell Hartwickwell
- 76Burl Litzelmanwell