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 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
57
Moderate
Drought index
234
Severe
Area in D2+
50.15%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
53%
p30 of record
Water assets
3,747
14 springs · 1,895 wells
USGS gauges (2)
- OAK CREEK NEAR RATTLESNAKE BUTTE NEAR WAKPALA, SD063548810 cfsp10 · below normal
- PORCUPINE CREEK NEAR FORT YATES, ND063548153 cfsp51 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 234 | 50.15 | 1/2 | p30 |
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