Lake Thompson HUC8 10170103
A 1,238 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
63
Moderate
Drought index
96
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
841
1 springs · 822 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 96 | 0 | — | — |
| 2026-10-20 | 96 | 0 | — | — |
| 2026-10-19 | 96 | 0 | — | — |
| 2026-10-18 | 96 | 0 | — | — |
| 2026-10-17 | 96 | 0 | — | — |
| 2026-10-16 | 96 | 0 | — | — |
| 2026-10-15 | 96 | 0 | — | — |
| 2026-10-14 | 96 | 0 | — | — |
| 2026-10-13 | 96 | 0 | — | — |
| 2026-10-12 | 96 | 0 | — | — |
| 2026-10-11 | 96 | 0 | — | — |
| 2026-10-10 | 96 | 0 | — | — |
| 2026-10-09 | 96 | 0 | — | — |
| 2026-10-08 | 96 | 0 | — | — |
Top water assets
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- 76Rick J Or Ronald Symenswell
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- 76Melvin W Bensonwell
- 76Page Brotherswell
- 76William Poppenwell
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