San Luis HUC8 13010003
A 4,098 km² sub-basin of the Rio Grande region in CO. 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
39
Stressed
Drought index
368
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
2,795
24 springs · 1,623 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 368 | 100 | — | — |
| 2026-10-18 | 368 | 100 | — | — |
| 2026-10-17 | 368 | 100 | — | — |
| 2026-10-16 | 368 | 100 | — | — |
| 2026-10-15 | 400 | 100 | — | — |
| 2026-10-14 | 400 | 100 | — | — |
| 2026-10-13 | 400 | 100 | — | — |
| 2026-10-12 | 400 | 100 | — | — |
| 2026-10-11 | 400 | 100 | — | — |
| 2026-10-10 | 400 | 100 | — | — |
| 2026-10-09 | 400 | 100 | — | — |
| 2026-10-08 | 410 | 100 | — | — |
| 2026-10-07 | 410 | 100 | — | — |
| 2026-10-06 | 410 | 100 | — | — |
Top water assets
- 69Willow Creekriver
- 69San Luis Creekriver
- 69Spanish Creekriver
- 69Deadman Creekriver
- 69Sand Creekriver
- 69Willow Creekriver
- 69San Luis Creekriver
- 69San Luis Creekriver
- 69Medano Creekriver
- 69Willow Creekriver