Is the San Marcos River flooding?
The San Marcos River is tracked by 3 USGS streamgauges in Texas. This page compares each gauge’s live water level against its official National Weather Service flood stage, refreshed every 15 minutes, so you can tell whether the San Marcos River is running normal, rising toward flood stage, or already flooding. 1 of 3 gauges have both a usable water-level reading and a published minor flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all Texas river levels.
River facts
The longest-running gauge on this river is San Marcos River at Luling, TX. The highest level ever recorded there was 41.85 ft on 18 October 1998, carrying 206,000 cfs. Peak records there go back to 1869 (88 annual peaks). It is currently at 3.74 ft, 38.1 ft below that record.
| Gauge | Status | Stage | Flood stage | Updated |
|---|---|---|---|---|
| San Marcos River at Luling, TX | No flooding | 3.74 ft | 20 ft | |
| San Marcos River at San Marcos, TX | No flood stage defined | 3.67 ft | — | |
| San Marcos River near Martindale, TX | No flood stage defined | 7.47 ft | — |