San Gabriel HUC8 12070205
A 3,540 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
56
Moderate
Drought index
186
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
60%
of 10 reporting
Median flow
47%
p20 of record
Water assets
1,011
59 springs · 335 wells
USGS gauges (11)
- Brushy Ck at Cedar Park, TX081058720 cfsp0 · much below normal
- N Fk San Gabriel Rv nr Georgetown, TX081047000 cfsp7 · much below normal
- Berry Ck at Airport Rd nr Georgetown, TX081050950 cfsp10 · below normal
- Willis Ck nr Granger, TX081055050 cfsp10 · below normal
- Lake Ck at Lake Ck Pkwy nr Austin, TX081058860 cfsp16 · below normal
- Brushy Ck at Kenney Fort Blvd at Round Rock, TX0810588811 cfsp24 · below normal
- Brushy Ck at IH 35, Round Rock, TX0810588314 cfsp27 · normal
- San Gabriel Rv at Laneport, TX081057005 cfsp37 · normal
- S Fk San Gabriel Rv at Georgetown, TX0810490016 cfsp77 · above normal
- N Fk San Gabriel Rv at Reagan Blvd nr Leander, TX08104646603 cfsp84 · above normal
- Brushy Ck at FM 619 nr Taylor, TX08106050778 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 186 | 0 | 6/10 | p20 |
Top water assets
- 67North San Gabriel Damreservoir
- 67Granger Damreservoir
- 66Upper Brushy Creek Ws Scs Site 7 Damreservoir
- 66Lower Brushy Creek Ws Scs Site 10 Damreservoir
- 66Lower Brushy Creek Ws Scs Site 9 Damreservoir
- 66Upper Brushy Creek Ws Scs Site 21 Damreservoir
- 66Upper Brushy Creek Ws Scs Site 17 Damreservoir
- 66Lower Brushy Creek Ws Scs Site 24 Damreservoir
- 66Upper Brushy Creek Ws Scs Site 29 Damreservoir
- 66Lower Brushy Creek Ws Scs Site 4A Damreservoir