South Concho HUC8 12090102
A 3,462 km² sub-basin of the Texas-Gulf region in TX. 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
64
Moderate
Drought index
50
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
75%
of 4 reporting
Median flow
46%
p10 of record
Water assets
581
22 springs · 297 wells
USGS gauges (7)
- S Concho Rv abv Twin Buttes Res nr San Angelo, TX081280303 cfsp8 · much below normal
- Spring Ck abv Twin Buttes Res nr San Angelo, TX081307000 cfsp10 · below normal
- Pecan Ck nr San Angelo, TX081314000 cfsp10 · below normal
- S Concho Rv at Christoval, TX081280007 cfsp37 · normal
- Spring Ck abv Tankersley, TX08129300125 cfsno long-term record
- Dove Ck at Knickerbocker, TX08130500105 cfsno long-term record
- Red Arroyo at S. Chadbourne St. nr San Angelo, TX08132450no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 50 | 0 | 3/4 | p10 |
Top water assets
- 67Dry Creekriver
- 67S Concho Rv At Christoval, Txriver
- 67Dove Creekriver
- 67South Concho Riverriver
- 67Twin Buttes Damreservoir
- 67Spring Creekriver
- 67Spring Creekriver
- 67Dove Ck At Knickerbocker, Txriver
- 67Dry Creekriver
- 67Dove Creekriver