South Laguna Madre HUC8 12110208
A 7,730 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
47
Stressed
Drought index
273
Severe
Area in D2+
72.88%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
452
0 springs · 240 wells
USGS gauges (7)
- N Main Drain at Boca Chica Hwy, Brownsville, TX084740952 cfsno long-term record
- Town Resaca at E 6th St, Brownsville, TX084741070 cfsno long-term record
- N Main Drain at Manzano St, Brownsville, TX084741081 cfsno long-term record
- Cameron Co Ditch 1 at FM 802, Brownsville, TX0847411029 cfsno long-term record
- Cameron Co Ditch 2 at FM 1847 nr Los Fresnos, TX0847411814 cfsno long-term record
- Old Main Drain No 2 at SH 4, Brownsville, TX084743001 cfsno long-term record
- Brazos Santiago Pass at South Padre Island, TX08474395no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 273 | 72.88 | — | — |
Top water assets
- 65Hidalgo County Wid No 3 Reservoir Damreservoir
- 65Laguna Atascosa Crossing #2 Damreservoir
- 65N Main Drain At Manzano St, Brownsville, Txriver
- 65Laguna Atascosa Crossing #1 Damreservoir
- 65Roos Dam Areservoir
- 65Arroyo Coloradoriver
- 65United Off-Channel Reservoir Damreservoir
- 65Hidalgo Id No 1 Reservoir Leveereservoir
- 65Cameron Co Ditch 1 At Fm 802, Brownsville, Txriver
- 65Roos Dam Creservoir