Aransas Bay HUC8 12100405
A 2,378 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
48
Stressed
Drought index
198
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
—
p10 of record
Water assets
215
0 springs · 164 wells
USGS gauges (1)
- Copano Ck nr Refugio, TX081892000 cfsp10 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 198 | 0 | 1/1 | p10 |
Top water assets
- 65Copano Creekriver
- 65Copano Creekriver
- 65Copano Creekriver
- 65Copano Creekriver
- 65Willow Creekriver
- 65Copano Creekriver
- 65Copano Creekriver
- 65Jim Naismith Reservoirreservoir
- 65Copano Creekriver
- 65Salt Creekriver