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San Antonio River at San Antonio water level

River gauge, San Antonio River, Texas, United States

Directions

Right now

Normal for mid-October

Water level

3.94ft Steady over the last 24 hours

Flow
25.6 cfs
3.8 4.0 4.2

History

History
3.54.04.5ftOct 13Oct 14Oct 16Oct 17Oct 193.54.04.5ftOct 13Oct 16Oct 19
3.54.04.55.0ftSep 20Sep 27Oct 4Oct 12Oct 193.54.04.55.0ftSep 20Oct 4Oct 19
45ftOct 2025Jan 2026Apr 2026Jul 2026Oct 202645ftOct 2025Apr 2026Oct 2026
45ftJanMarMayJulSepNov202645ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %)

What this means

The gauge at San Antonio River at San Antonio reads 3.94 ft, a normal level for mid-October.

The median for mid-October is 3.98 ft, based on 13 years of readings, so the river stage is 0.04 ft below typical. On the same day last year the reading was 3.67 ft, a difference of +0.27 ft.

It has barely moved over the past 24 hours. Over the past 30 days it has moved between 3.84 ft and 4.60 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Compared with 13 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
3.98 ft0.04 ft below the median for this date
Normal for this date
3.73 ft – 4.20 ft8 years in 10 fall in this range (13 years of records)
Same day last year
3.67 ft+0.27 ft
Lowest and highest in 30 days
3.84 ft – 4.60 ft
Lowest and highest in 12 months
3.20 ft – 4.81 ft

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

Weather at the gauge

No rain in the last 3 days.

17 Sat 70° 52° – Wind 14 mph
18 Sun 73° 49° – Wind 6 mph
19 Mon 73° 53° – Wind 9 mph
20 Tue 82° 64° – Wind 10 mph
21 Wed 80° 65° – Wind 8 mph
22 Thu 84° 65° – Wind 8 mph
23 Fri 84° 62° – Wind 11 mph

Forecast: Open-Meteo

Sunrise 07:39 AM Sunset 07:01 PM Daylight 11 hr, 22 min First quarter 58%

Map

Other gauges on the San Antonio River

Gauge Level Compared with normal 24 hours Distance
San Antonio River at Mitchell St, San AntonioRiver gauge, San Antonio River 4.26 ft Normal −0.01 ft 1.2 mi
San Antonio River at Loop 410, San AntonioRiver gauge, San Antonio River 3.67 ft Low −0.03 ft 7 mi
San Antonio River near Braunig Lake near ElmendorfRiver gauge, San Antonio River 11.25 ft No reference yet −0.01 ft 13 mi
San Antonio River near ElmendorfRiver gauge, San Antonio River 9.82 ft Normal +0.03 ft 15 mi
San Antonio River near FloresvilleRiver gauge, San Antonio River 3.85 ft Very low +0.05 ft 28 mi
San Antonio River near Falls CityRiver gauge, San Antonio River 0.82 ft Very low −0.01 ft 41 mi
San Antonio River at SH 72 near RungeRiver gauge, San Antonio River 10.08 ft Normal −0.23 ft 60 mi
San Antonio River at GoliadRiver gauge, San Antonio River 3.68 ft Normal −0.16 ft 85 mi
San Antonio River near McFaddinRiver gauge, San Antonio River 15.21 ft No reference yet +0.11 ft 107 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
San Pedro Creek at Furnish St, San AntonioRiver gauge, San Pedro Creek 0.0 cfs Very low ±0 1.0 mi
Salado Creek at Loop 13, San AntonioRiver gauge, Salado Creek 5.18 ft Low −0.01 ft 6.1 mi
Olmos Creek at Dresden Dr, San AntonioRiver gauge, Olmos Creek 1.81 ft Normal ±0 6 mi
Leon Creek at IH 35, San AntonioRiver gauge, Leon Creek 2.25 ft Normal +0.05 ft 8 mi
Leon Creek at Lp 410 at San AntonioRiver gauge, Leon Creek 4.05 ft Low +0.01 ft 9 mi
Medina River at San AntonioRiver gauge, Medina River 2.88 ft Very low −0.05 ft 10 mi
Medina River near SomersetRiver gauge, Medina River 4.04 ft Low ±0 11 mi
Medina River near MacdonaRiver gauge, Medina River −0.06 ft Low −0.01 ft 13 mi

Questions and answers

Is the San Antonio River at San Antonio higher than last year?

Yes, it is 0.27 ft higher than on the same day last year, when the reading was 3.67 ft.

What is a normal level for the San Antonio River at San Antonio in mid-October?

The median for mid-October is 3.98 ft. In 8 years out of 10 the reading falls between 3.73 ft and 4.20 ft, based on 13 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of San Antonio River at San Antonio today?

On Oct 19, 2026, 04:00 AM CDT, the water level was 3.94 ft. Steady over the last 24 hours.

Is San Antonio River at San Antonio rising or falling?

Steady over the last 24 hours. Down 0.08 ft over the last 7 days.

Is the level of San Antonio River at San Antonio normal?

Normal for mid-October. Compared with 13 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:08178000 (Agency page)
Coordinates
29.40968, -98.49505 (WGS84)
Vertical datum
NAVD88
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 3.94 ft 2026-10-19 09:00 Provisional
Flow 25.6 cfs 2026-10-19 09:00 Provisional

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How to cite

U.S. Geological Survey: San Antonio River at San Antonio (usgs:08178000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/san-antonio-river-at-san-antonio

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.