Lower Trinity HUC8 12030203
A 2,082 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
50
Moderate
Drought index
210
Severe
Area in D2+
57.86%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
74%
p44 of record
Water assets
634
6 springs · 327 wells
USGS gauges (4)
- Trinity Rv at Liberty, TX080670001,310 cfsp9 · much below normal
- CWA Canal nr Dayton, TX080670701,020 cfsp78 · above normal
- Luce Bayou ITP Canal at Capers Ridge nr Hardin, TX08066850294 cfsno long-term record
- Trinity Rv at IH 10 nr Wallisville, TX08067250129 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 210 | 57.86 | 1/2 | p44 |
| 2026-10-19 | 210 | 57.86 | 1/2 | p44 |
| 2026-10-18 | 210 | 57.86 | 1/2 | p44 |
| 2026-10-17 | 210 | 57.86 | 1/2 | p46 |
| 2026-10-16 | 210 | 57.86 | 1/2 | p50 |
| 2026-10-15 | 139 | 0 | 1/2 | p44 |
| 2026-10-14 | 139 | 0 | 1/2 | p44 |
| 2026-10-13 | 139 | 0 | 1/2 | p43 |
| 2026-10-12 | 139 | 0 | 1/2 | p43 |
| 2026-10-11 | 139 | 0 | 1/2 | p43 |
| 2026-10-10 | 139 | 0 | 1/2 | p44 |
| 2026-10-09 | 139 | 0 | 1/2 | p45 |
| 2026-10-08 | 142 | 0 | 1/2 | p42 |
| 2026-10-07 | 142 | 0 | 0/2 | p62 |
Top water assets
- 65Talley Lake Damreservoir
- 65Trinity Rv At Romayor, Txriver
- 65Old Riverriver
- 65Trinity Rv At Liberty, Txriver
- 65Davis Bayouriver
- 65East Prong Old Riverriver
- 65Lake Forest Damreservoir
- 65Trinity Riverriver
- 65Timber Lake Damreservoir
- 65Winter Valley Estates Damreservoir