Lower Lake Oahe HUC8 10130105
A 9,928 km² sub-basin of the Missouri region in 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
50
Moderate
Drought index
267
Severe
Area in D2+
63.92%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
3,749
15 springs · 1,663 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 267 | 63.92 | — | — |
Top water assets
- 76Harvey/Andrea Sheehanriver
- 76Sutton Bay Golf Llcriver
- 76Lawrence Snyderwell
- 76James F/Charlene Schumacherriver
- 76Harvey/Andrea Sheehanriver
- 76Boyd A Lakeriver
- 76Raymond Suttonriver
- 76Paul Cowanriver
- 76Nystrom Brothers Incriver
- 76H L Brekkeriver