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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
66
Moderate
Drought index
257
Severe
Area in D2+
55.72%
0% exceptional (D4)
Gauges below normal
0%
of 7 reporting
Median flow
122%
p54 of record
Water assets
820
12 springs · 273 wells
USGS gauges (10)
- Trinity Rv bl Dallas, TX08057410572 cfsp38 · normal
- Trinity Rv nr Rosser, TX08062500646 cfsp43 · normal
- Trinity Rv at Trinidad, TX08062700958 cfsp52 · normal
- White Rk Ck at Greenville Ave, Dallas, TX0805720017 cfsp54 · normal
- Trinity Rv at Dallas, TX08057000454 cfsp55 · normal
- White Rk Ck at White Rk Lk, Dallas, TX0805730018 cfsp56 · normal
- Turtle Ck at Dallas, TX080565004 cfsp80 · above normal
- Red Oak Ck at FM 813 nr Palmer, TX080620954 cfsno long-term record
- Trinity Rv at W Cedar Creek Pkwy nr Rosser, TX08062575746 cfsno long-term record
- Trinity Rv at Hwy 287 nr Cayuga, TX08064570836 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 257 | 55.72 | 0/7 | p54 |
| 2026-10-19 | 257 | 55.72 | 0/7 | p52 |
| 2026-10-18 | 257 | 55.72 | 0/7 | p52 |
| 2026-10-17 | 257 | 55.72 | 0/7 | p55 |
| 2026-10-16 | 257 | 55.72 | 0/7 | p54 |
| 2026-10-15 | 326 | 81.96 | 0/7 | p46 |
| 2026-10-14 | 326 | 81.96 | 0/7 | p51 |
| 2026-10-13 | 326 | 81.96 | 0/7 | p54 |
| 2026-10-12 | 326 | 81.96 | 0/7 | p51 |
| 2026-10-11 | 326 | 81.96 | 0/7 | p54 |
| 2026-10-10 | 326 | 81.96 | 0/7 | p59 |
| 2026-10-09 | 326 | 81.96 | 0/7 | p64 |
| 2026-10-08 | 415 | 98.78 | 0/7 | p69 |
| 2026-10-07 | 415 | 98.78 | 0/7 | p91 |
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