Lavaca HUC8 12100101
A 2,356 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
50
Moderate
Drought index
285
Severe
Area in D2+
84.6%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
18%
p14 of record
Water assets
357
3 springs · 46 wells
USGS gauges (2)
- Lavaca Rv nr Edna, TX081640000 cfsp0 · much below normal
- Lavaca Rv at Hallettsville, TX081635001 cfsp28 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 285 | 84.6 | 1/2 | p14 |
| 2026-10-18 | 285 | 84.6 | 2/2 | p12 |
| 2026-10-17 | 285 | 84.6 | 1/2 | p13 |
| 2026-10-16 | 285 | 84.6 | 1/2 | p18 |
| 2026-10-15 | 290 | 89.97 | 1/2 | p14 |
| 2026-10-14 | 290 | 89.97 | 2/2 | p5 |
| 2026-10-13 | 290 | 89.97 | 0/2 | p48 |
| 2026-10-12 | 290 | 89.97 | 0/2 | p49 |
| 2026-10-11 | 290 | 89.97 | 0/2 | p28 |
| 2026-10-10 | 290 | 89.97 | 2/2 | p16 |
| 2026-10-09 | 290 | 89.97 | 2/2 | p18 |
| 2026-10-08 | 377 | 92.67 | 1/2 | p20 |
| 2026-10-07 | 377 | 92.67 | 0/2 | p58 |
| 2026-10-06 | 377 | 92.67 | 0/2 | p59 |
Top water assets
- 65Smothers Creekriver
- 65Lavaca Riverriver
- 65Big Brushy Creekriver
- 65Big Brushy Creekriver
- 65Lavaca Riverriver
- 65Barnes Lake Damreservoir
- 65Lavaca Riverriver
- 65Big Brushy Creekriver
- 65Rocky Creekriver
- 65Rocky Creekriver