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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
53
Moderate
Drought index
212
Severe
Area in D2+
17.15%
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, TX084740953 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, TX0847411034 cfsno long-term record
- Cameron Co Ditch 2 at FM 1847 nr Los Fresnos, TX0847411817 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 |
|---|---|---|---|---|
| 2026-10-20 | 212 | 17.15 | — | — |
| 2026-10-19 | 212 | 17.15 | — | — |
| 2026-10-18 | 212 | 17.15 | — | — |
| 2026-10-17 | 212 | 17.15 | — | — |
| 2026-10-16 | 212 | 17.15 | — | — |
| 2026-10-15 | 282 | 82.01 | — | — |
| 2026-10-14 | 282 | 82.01 | — | — |
| 2026-10-13 | 282 | 82.01 | — | — |
| 2026-10-12 | 282 | 82.01 | — | — |
| 2026-10-11 | 282 | 82.01 | — | — |
| 2026-10-10 | 282 | 82.01 | — | — |
| 2026-10-09 | 282 | 82.01 | — | — |
| 2026-10-08 | 423 | 100 | — | — |
| 2026-10-07 | 423 | 100 | — | — |
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