River gauges›Texas
RIVER GAUGE · BLANCO RIVER

Blanco River at San Marcos

Hays County, Texas

Water level6.44 ft
Flow—
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action13 ft2,403 cfs
Minor flood18 ft7,631 cfs
Moderate flood24 ft26,425 cfs
Major flood30 ft52,037 cfs

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
May 24, 201543.1 ft136,888 cfs
Oct 30, 201542.56 ft132,205 cfs
Oct 14, 202124.71 ft29,235 cfs

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