Upper Trinity HUC8 12030105
A 3,548 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
51
Moderate
Drought index
266
Severe
Area in D2+
66.29%
0% exceptional (D4)
Gauges below normal
71%
of 7 reporting
Median flow
68%
p23 of record
Water assets
820
12 springs · 273 wells
USGS gauges (10)
- White Rk Ck at White Rk Lk, Dallas, TX080573000 cfsp10 · below normal
- White Rk Ck at Greenville Ave, Dallas, TX080572003 cfsp15 · below normal
- Trinity Rv at Trinidad, TX08062700609 cfsp18 · below normal
- Trinity Rv nr Rosser, TX08062500501 cfsp23 · below normal
- Trinity Rv bl Dallas, TX08057410490 cfsp24 · below normal
- Trinity Rv at Dallas, TX08057000417 cfsp53 · normal
- Turtle Ck at Dallas, TX080565007 cfsp78 · above normal
- Red Oak Ck at FM 813 nr Palmer, TX080620954 cfsno long-term record
- Trinity Rv at W Cedar Creek Pkwy nr Rosser, TX08062575612 cfsno long-term record
- Trinity Rv at Hwy 287 nr Cayuga, TX08064570538 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 266 | 66.29 | 5/7 | p23 |
Top water assets
- 66Grays Creek Ws Scs Site 9 Damreservoir
- 66Lower East Fork Laterals Ws Scs Site 8 Damreservoir
- 66Rosser Trinidad Laterals Ws Scs Site 1 Damreservoir
- 66White Rock Damreservoir
- 66Lower East Fork Laterals Ws Scs Site 11 Damreservoir
- 66Exall Lake Damreservoir
- 66Woody Branch Damreservoir
- 65Lake June Damreservoir
- 65Trinity Rv At W Cedar Creek Pkwy Nr Rosser, Txriver
- 65Trinity Rv Nr Rosser, Txriver