San Fernando HUC8 12110204
A 3,297 km² sub-basin of the Texas-Gulf 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
57
Moderate
Drought index
307
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
33%
of 3 reporting
Median flow
733%
p56 of record
Water assets
310
0 springs · 87 wells
USGS gauges (3)
- San Diego Ck at Alice, TX082118000 cfsp10 · below normal
- San Fernando Ck at Alice, TX082119002 cfsp56 · normal
- Tranquitas Ck at Kingsville, TX082123001 cfsp64 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 307 | 100 | 1/3 | p56 |
| 2026-10-18 | 307 | 100 | 1/3 | p53 |
| 2026-10-17 | 307 | 100 | 1/3 | p54 |
| 2026-10-16 | 307 | 100 | 1/3 | p52 |
| 2026-10-15 | 308 | 100 | 2/3 | p18 |
| 2026-10-14 | 308 | 100 | 1/3 | p59 |
| 2026-10-13 | 308 | 100 | 1/3 | p59 |
| 2026-10-12 | 308 | 100 | 1/3 | p54 |
| 2026-10-11 | 308 | 100 | 1/3 | p51 |
| 2026-10-10 | 308 | 100 | 1/3 | p55 |
| 2026-10-09 | 308 | 100 | 1/3 | p63 |
| 2026-10-08 | 408 | 100 | 1/3 | p71 |
| 2026-10-07 | 408 | 100 | 1/3 | p95 |
| 2026-10-06 | 408 | 100 | 1/3 | p92 |
Top water assets
- 66San Diego-Rosita Cks Ws Scs Site 7 Damreservoir
- 66San Diego-Rosita Cks Ws Scs Site 2 Damreservoir
- 66San Diego-Rosita Cks Ws Scs Site 9 Damreservoir
- 66Chiltipin San Fernando Cks Ws Scs Site 6 Damreservoir
- 66San Diego-Rosita Cks Ws Scs Site 10 Damreservoir
- 65Lake Findley Damreservoir
- 65San Diego Creekriver
- 65Chiltipin San Fernando Cks Ws Scs Site 7 Damreservoir
- 65San Diego Creekriver
- 65Chiltipin San Fernando Cks Ws Scs Site 1 Damreservoir