The San Antonio River Authority Floodplain Viewer engages users in an interactive floodplain map, displaying the Federal Emergency Management Agency’s (FEMA) National Flood Hazard Layer (NFHL) data. Together with its many Bexar Regional Watershed Management (BRWM) partners, the San Antonio River Authority performs engineering studies to develop the data used in these digital maps, providing basic information about the floodplains in Bexar, Wilson, Karnes and Goliad counties.
Stay Weather‑Aware
July 14, 2026
We are experiencing heavy rains and thunderstorms over the next few days and are currently under a flood watch. Heavy rains in short time spans may result in high water on roads and temporary closures at low water crossings.
Before heading out, residents are encouraged to check SARiverFlood.org or their local county flood website for real‑time roadway conditions:
These sites provide up‑to‑date information from flood‑monitoring sensors across the region. Real‑time updates are available 24/7 to help you stay informed as conditions change.
Please use caution when traveling and plan routes accordingly.