East San Antonio Bay HUC8 12100403
A 1,346 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
68
Moderate
Drought index
196
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
85%
p42 of record
Water assets
38
0 springs · 22 wells
USGS gauges (1)
- North end of GBRA Calhoun Canal nr Long Mott,TX0818859044 cfsp42 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 196 | 0 | 0/1 | p42 |
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