Lower Colorado HUC8 12090302
A 1,827 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
55
Moderate
Drought index
141
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
37%
p15 of record
Water assets
215
0 springs · 86 wells
USGS gauges (2)
- Colorado Rv at Wharton, TX08162000378 cfsp15 · below normal
- Colorado Rv nr Bay City, TX081625002,300 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 141 | 0 | 1/1 | p15 |
Top water assets
- 66Arbuckle Reservoir Damreservoir
- 65Colorado Riverriver
- 65Colorado Riverriver
- 65Colorado Rv Nr Bay City, Txriver
- 65Jones Creekriver
- 65Blue Creekriver
- 65Skull Creekriver
- 65Miller Creekriver
- 65Colorado Rv At Wharton, Txriver
- 65Colorado Riverriver