San Antonio

San Antonio River Rises Toward Floresville, Poised To Swamp Park And Back Roads

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Published on July 15, 2026
San Antonio River Rises Toward Floresville, Poised To Swamp Park And Back RoadsSource: Unsplash/ Maksym Pozniak-Haraburda

Floresville officials are sounding the alarm as the San Antonio River creeps higher, with forecasts suggesting it could climb into the low 30s of feet, high enough to spill into the lowest stretches of River City Park and cut off nearby back roads. In an advisory posted Wednesday, the city warned that a projected crest near 33 feet would swamp low-lying park areas and push floodwater onto floodplain secondary roads. The alert lands after repeated rounds of heavy thunderstorms across South Texas that keep sending runoff into the San Antonio River basin.

What forecasters are saying

According to the National Weather Service, the local "action" or bankfull stage is near 21 feet, flood stage is around 27 feet, moderate flooding starts at about 33 feet, and major flooding kicks in near 42 feet. At that moderate 33-foot level, forecasters note that "secondary roads near the floodplain may become flooded and impassable" and that the lowest portions of River City Park would see extensive flooding. Those thresholds and impact notes are documented in the river forecast from the National Weather Service.

Where the gauges stand now

The City of Floresville posted its advisory to X, reporting that the local river gauge was about 11.6 feet at 2 p.m. Wednesday and reminding residents that bankfull sits near 21 feet. That snapshot is why officials are urging caution now and asking residents to monitor conditions as rainwater moves downstream. For readers tracking the hardware behind those forecasts, the USGS monitoring page for the San Antonio River near Floresville (station 08183200) lists current gauge readings and historical data for this stretch of the river.

Roads and park impacts

The National Weather Service flood statement for the area spells out what residents could see as the river climbs. Around 27 feet, water begins to reach lower portions of River City Park. Higher crests can push floodwaters onto secondary roads, low bridges, and back roads across the floodplain. Motorists are urged not to drive through water-covered roads, since low-water crossings can become life-threatening in rising water. See the official flood statement in the National Weather Service flood warning.

Why this matters now

South Texas has been hit with repeated rounds of heavy rain this week, and forecasters warn that additional storms could keep river levels rising through the next several days. National reporting highlights a heightened flash-flood risk across parts of the San Antonio region as runoff funnels into the river system. Local emergency managers and the National Weather Service are watching the basin closely while advising residents to avoid low-lying areas and unnecessary travel, as reported by AP.

How to stay informed

Residents are urged to sign up for local emergency alerts, avoid driving on flooded roads, and move to higher ground if their property is in a floodplain. Check City of Floresville notices and social accounts for local updates, and monitor river forecasts and real-time gauge readings to see how conditions evolve. The city posts updates on the City of Floresville website and through its social channels.