Rio Grande Valley water levels
10 USGS stream gauges in Cameron, Hidalgo and Willacy counties · gage height, with NWS flood stages where published
By county
Cameron County
| Gauge | Gage height | NWS flood stage | Updated |
|---|---|---|---|
| Brazos Santiago Pass at South Padre Island | 1.18 ft | — | 15 minutes ago |
| Cameron County Ditch 1 at FM 802, Brownsville | 1.43 ft | — | 35 minutes ago |
| Cameron County Ditch 2 at FM 1847 near Los Fresnos | 1.52 ft | — | 80 minutes ago |
| N Main Drain at Boca Chica Hwy, Brownsville | 16.64 ft | — | 65 minutes ago |
| N Main Drain at Manzano St, Brownsville | 13.28 ft | — | 35 minutes ago |
| North Main Drain at Ostos Rd, Brownsville | 1.31 ft | — | 50 minutes ago |
| Old Main Drain No 2 at SH 4, Brownsville | 1.48 ft | — | 20 minutes ago |
| Resaca del Rancho Viejo, Brownsville | 17.00 ft | — | 50 minutes ago |
| Town Resaca at E 6th St, Brownsville | 20.24 ft | — | 65 minutes ago |
Hidalgo County
| Gauge | Gage height | NWS flood stage | Updated |
|---|---|---|---|
| Donna ID Canal at E Levee Rd near Donna | 84.52 ft | — | 80 minutes ago |
USGS has no gage-height gauge reporting in Willacy County.
Storms
No National Weather Service flood alert has named any of Cameron, Hidalgo and Willacy counties since this site began recording alerts here on October 23, 2026. Each new event gets its own page, with every gauge's peak, automatically.
Reading these gauges
USGS gauges report gage height: the water surface above each gauge's own zero, not a depth. Where that zero is set at 0 ft on a vertical datum the gage height is also an elevation; each gauge page says which. The NWS flood stages (action, minor, moderate and major) are the National Weather Service's references for each location, shown only where the NWS reads the same scale as USGS. How this site works.