Medina River near Somerset

Highest listed crest 42.19 ftFlood stage 18.0 ft5 crests since 2002

The Medina River near Somerset crested at major flood stage 1 time among the 5 crests the National Weather Service lists from 2002 to 2021. The highest, 42.19 ft on July 6, 2002, was major flooding, 24.19 feet above flood stage. 3 other gauges on the Medina River crested above flood stage within a week of it, 2 at their own highest listed crest.

The gauge

Highest listed crest: 42.19 ft; July 6, 2002; 56,000 cubic feet per second
Flood stage: 18.0 ft; Major flooding from 24.0 ft
Crests at major: 1; 248th of 370 gauges in Texas
Most recent flood crest: September 23, 2018; 18.19 ft, minor flooding
Location: Bexar County; Near San Antonio (14.3 mi)
Identifiers: NWS SMMT2; USGS 08180800

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Medina River near Somerset

Action stage	15.0	2	Oct 14, 2021	The level at which the NWS or its partners begin to take action
Flood stage (minor)	18.0	1	Sep 23, 2018	Minimal or no property damage, but possibly some public threat
Moderate flood stage	22.0	1	Oct 24, 2002	Some inundation of structures and roads near the stream
Major flood stage	24.0	1	Jul 6, 2002	Extensive inundation of structures and roads

Every listed crest

5 crests from 2002 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Medina River near Somerset

1	Jul 6, 2002	42.19	+24.19	Major	56,000
2	Oct 24, 2002	22.08	+4.08	Moderate	11,500
3	Sep 23, 2018	18.19	+0.19	Minor	5,020
4	May 2, 2021	17.10	−0.90	Action	3,900
5	Oct 14, 2021	15.29	−2.71	Action	2,639

The worst floods along the Medina River

For this gauge's highest crests, the other gauges on the Medina River that crested above flood stage within a week.

July 6, 2002: 42.19 ft here, major flooding

San Antonio US 281STX · Jul 4, 2002 · 55.65 ft · Major · its highest
BanderaTX · Jul 5, 2002 · 38.91 ft · Major
La CosteTX · Jul 6, 2002 · 32.00 ft · Major · its highest

Gauges on the Medina River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Medina River

Bandera	TX	13.0	46.62 ft, Aug 2, 1978	5
Medina Lake	TX	1,064.2	1,065.76 ft, Jun 3, 2016	0
La Coste	TX	15.0	32.00 ft, Jul 6, 2002	3
Somerset this gauge	TX	18.0	42.19 ft, Jul 6, 2002	1
San Antonio US 281S	TX	20.0	55.65 ft, Jul 4, 2002	11

Other gauges in Bexar County

Flood gauges in Bexar County

I-35S near San Antonio	15.0	29.31 ft, Oct 18, 1998	10
San Antonio US 281S	20.0	55.65 ft, Jul 4, 2002	11
Dresden Drive	9.0	14.82 ft, Sep 13, 1978	7
Loop 13	18.0	34.07 ft, Oct 17, 1998	10
NE Loop 410	12.0	24.00 ft, Oct 1, 1913	6
Elmendorf	35.0	64.20 ft, Oct 18, 1998	7
Loop 410	12.0	34.21 ft, May 25, 2013	7
Mitchell Street	13.0	14.67 ft, May 25, 2013	0

Bexar County: every hazard · River floods across the country · Texas

NOAA National Water Prediction Service, gauge SMMT2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.