River levels near San Marcos, Texas
1 of 5 gauges have both a usable water-level reading and a published minor flood stage. Readings may be delayed; check the observation time on each gauge page. This summary does not establish whether streets or unmonitored waterways near San Marcos are flooding.
Blanco River at San Marcos, TXSan Marcos River at San Marcos, TXBlanco River at Halifax Rch near Kyle, TXBlanco River near Kyle, TXSan Marcos River near Martindale, TXProvisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.