Austin-Oyster HUC8 12040205
A 1,804 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
46
Stressed
Drought index
278
Severe
Area in D2+
79.2%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
837
0 springs · 650 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-18 | 278 | 79.2 | — | — |
| 2026-10-17 | 278 | 79.2 | — | — |
| 2026-10-16 | 278 | 79.2 | — | — |
| 2026-10-15 | 192 | 0 | — | — |
| 2026-10-14 | 192 | 0 | — | — |
| 2026-10-13 | 192 | 0 | — | — |
| 2026-10-12 | 192 | 0 | — | — |
| 2026-10-11 | 192 | 0 | — | — |
| 2026-10-10 | 192 | 0 | — | — |
| 2026-10-09 | 192 | 0 | — | — |
| 2026-10-08 | 199 | 0 | — | — |
| 2026-10-07 | 199 | 0 | — | — |
| 2026-10-06 | 199 | 0 | — | — |
| 2026-10-05 | 199 | 0 | — | — |
Top water assets
- 65Oyster Creekriver
- 65Oyster Creekriver
- 65Oyster Creekriver
- 65Bastrop Bayouriver
- 65Dam No 3reservoir
- 65Oyster Creekriver
- 65Middle Bayouriver
- 65Dam No 1reservoir
- 65Oyster Creekriver
- 65Flores Bayouriver