Santiago Draw HUC8 13040207
A 2,262 km² sub-basin of the Rio Grande region in TX. 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
101
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
13
2 springs · 3 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 101 | 0 | — | — |
| 2026-10-20 | 101 | 0 | — | — |
| 2026-10-19 | 101 | 0 | — | — |
| 2026-10-18 | 101 | 0 | — | — |
| 2026-10-17 | 101 | 0 | — | — |
| 2026-10-16 | 101 | 0 | — | — |
| 2026-10-15 | 101 | 0 | — | — |
| 2026-10-14 | 101 | 0 | — | — |
| 2026-10-13 | 101 | 0 | — | — |
| 2026-10-12 | 101 | 0 | — | — |
| 2026-10-11 | 101 | 0 | — | — |
| 2026-10-10 | 101 | 0 | — | — |
| 2026-10-09 | 101 | 0 | — | — |
| 2026-10-08 | 200 | 0 | — | — |
Top water assets
- 68Nevill Ranch Damreservoir
- 51Texas Water Right 12303133002well
- 51Texas Water Right 12303153001well
- 51Texas Water Right 12303133401well
- 42Baylor Tanklake
- 42Christmas Wells Tanklake
- 42Carney Tanklake
- 42Broken Tanklake
- 42BK-73-30-501spring
- 42Goddard Damreservoir