Upper Lake Oahe HUC8 10130102
A 9,418 km² sub-basin of the Missouri region in ND, 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
70
Moderate
Drought index
189
Moderate
Area in D2+
24.06%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
74%
p36 of record
Water assets
3,747
14 springs · 1,895 wells
USGS gauges (2)
- PORCUPINE CREEK NEAR FORT YATES, ND063548153 cfsp36 · normal
- OAK CREEK NEAR RATTLESNAKE BUTTE NEAR WAKPALA, SD06354881no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 189 | 24.06 | 0/1 | p36 |
| 2026-10-19 | 189 | 24.06 | 0/1 | p39 |
| 2026-10-18 | 189 | 24.06 | 0/1 | p40 |
| 2026-10-17 | 189 | 24.06 | 0/1 | p36 |
| 2026-10-16 | 189 | 24.06 | 0/1 | p43 |
| 2026-10-15 | 189 | 24.06 | 0/1 | p51 |
| 2026-10-14 | 189 | 24.06 | 0/1 | p36 |
| 2026-10-13 | 189 | 24.06 | 0/1 | p34 |
| 2026-10-12 | 189 | 24.06 | 0/1 | p30 |
| 2026-10-11 | 189 | 24.06 | 0/1 | p31 |
| 2026-10-10 | 189 | 24.06 | 0/1 | p34 |
| 2026-10-09 | 189 | 24.06 | 0/2 | p66 |
| 2026-10-08 | 210 | 26.49 | 0/2 | p69 |
| 2026-10-07 | 210 | 26.49 | 0/2 | p69 |
Top water assets
- 76Harley Neuharthwell
- 76Calvin Reuerriver
- 76James D Collinsriver
- 76Sandra Andersonriver
- 76Calvin & Rita Reuerriver
- 76Ed Van Beekriver
- 76Allen L Walthriver
- 76Frank Vojtawell
- 76Roger Vandervorstriver
- 76Everett Van Beekriver