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San Antonio River near Elmendorf water level

River gauge, San Antonio River, Texas, United States

Directions

Right now

Normal for mid-October

Water level

9.49ft Steady over the last 24 hours

Flow
114 cfs
Water temperature
76 °F
25 50 Highest onrecord 64.20 ft Minor floodstage 35.00 ft

History

History
1015ftOct 13Oct 14Oct 16Oct 18Oct 191015ftOct 13Oct 16Oct 19
102030ftSep 20Sep 27Oct 4Oct 12Oct 19Minor flood stage102030ftSep 20Oct 4Oct 19Minor flood stage
102030ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage102030ftOct 2025Apr 2026Oct 2026Minor flood stage
102030ftJanMarMayJulSepNov2026102030ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Minor flood stage

What this means

Water levels are unremarkable at San Antonio River near Elmendorf, where the gauge shows 9.49 ft.

The median for mid-October is 11.24 ft, based on 38 years of readings, so the river stage is 1.74 ft below typical. It is 25.51 ft below the flood stage of 35.00 ft. On the same day last year the reading was 9.62 ft, a difference of −0.13 ft.

It has barely moved over the past 24 hours. The 30-day range is 9.04 ft – 23.93 ft.

Fall is often low-water season on rivers, until steadier rain returns. The water temperature at the gauge is 76 °F.

Compared with 38 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
11.24 ft1.74 ft below the median for this date
Normal for this date
7.67 ft – 16.29 ft8 years in 10 fall in this range (38 years of records)
Same day last year
9.62 ft−0.13 ft
Lowest and highest in 30 days
9.04 ft – 23.93 ft
Lowest and highest in 12 months
8.99 ft – 29.61 ft
Highest on record
64.20 ftOctober 18, 1998

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

For reference, flood stage is 35.00 ft.

What happens at each level

60.00 ft
Downstream in Wilson county people cut off by numerous flooded Farm to Market roads. Numerous homes are flooded in Wilson county as well.
52.00 ft
Widespread major flooding damages crops and pastureland. Roads and bridges are flooded and dangerous. Oil field pump jacks and irrigation pumps are flooded and damaged. Many livestock can be cut off and drowned.
48.00 ft
Major flooding near Elmendorf to above Goliad State Park isolates livestock, damages crops and roads, floods oil field tank batteries, pump jacks, irrigation pumps, and any equipment in the flood plain. Flooding is widespread.
45.00 ft
Moderate lowland flooding inundates crop and pastureland below San Antonio to below Floresville. Roads and bridges in the flood plain are flooded. Pump jacks and oil field tank batteries flood.
43.00 ft
Moderate lowland flooding inundates and damages crop and pastureland below San Antonio to below Floresville. Numerous roads and bridges are flooded. Oil well pump jacks and irrigation pumps are flooded and damaged.
39.00 ft
Moderate lowland flooding damages crops and floods pastureland below San Antonio to below Floresville. Secondary roads and low bridges, irrigation pumps, oil field pump jacks and tank batteries flood. Livestock are cut off in low areas.
35.00 ft
Minor lowland flooding inundates crop and pastureland below San Antonio to below Floresville.
33.00 ft
Overbank conditions may cut off livestock in low areas.
9.49 ft
Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: 32 %.

RankLevelDate
164.20 ftOctober 18, 1998
263.16 ftJuly 6, 2002
361.00 ftSeptember 27, 1946
453.06 ftJune 5, 1986
553.00 ftJune 28, 1913
652.34 ftMay 26, 2013
750.76 ftNovember 23, 2004
844.99 ftMay 24, 2015
944.82 ftJune 3, 2016
1044.55 ftJuly 26, 2007

Weather at the gauge

No rain in the last 3 days.

17 Sat 69° 51° – Wind 14 mph
18 Sun 73° 47° – Wind 7 mph
19 Mon 73° 52° – Wind 9 mph
20 Tue 83° 62° – Wind 11 mph
21 Wed 81° 64° – Wind 9 mph
22 Thu 86° 64° – Wind 9 mph
23 Fri 86° 61° – Wind 12 mph

Forecast: Open-Meteo

Sunrise 07:38 AM Sunset 07:00 PM Daylight 11 hr, 22 min First quarter 60%

Map

Other gauges on the San Antonio River

Gauge Level Compared with normal 24 hours Distance
San Antonio River at San AntonioRiver gauge, San Antonio River 3.93 ft Normal +0.04 ft 15 mi
San Antonio River at Mitchell St, San AntonioRiver gauge, San Antonio River 4.27 ft Normal +0.02 ft 14 mi
San Antonio River at Loop 410, San AntonioRiver gauge, San Antonio River 3.67 ft Low −0.02 ft 9 mi
San Antonio River near Braunig Lake near ElmendorfRiver gauge, San Antonio River 10.87 ft No reference yet +0.08 ft 3.0 mi
San Antonio River near FloresvilleRiver gauge, San Antonio River 3.63 ft Very low −0.02 ft 13 mi
San Antonio River near Falls CityRiver gauge, San Antonio River 0.82 ft Very low −0.01 ft 26 mi
San Antonio River at SH 72 near RungeRiver gauge, San Antonio River 10.14 ft Normal −0.07 ft 45 mi
San Antonio River at GoliadRiver gauge, San Antonio River 3.58 ft Low −0.29 ft 71 mi
San Antonio River near McFaddinRiver gauge, San Antonio River 15.22 ft No reference yet +0.11 ft 93 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Medina River at San AntonioRiver gauge, Medina River 2.82 ft Very low −0.06 ft 9 mi
Salado Creek at Loop 13, San AntonioRiver gauge, Salado Creek 5.20 ft Low +0.02 ft 10 mi
Medina River near SomersetRiver gauge, Medina River 4.04 ft Low ±0 14 mi
Leon Creek at IH 35, San AntonioRiver gauge, Leon Creek 2.26 ft Normal +0.04 ft 16 mi
San Pedro Creek at Furnish St, San AntonioRiver gauge, San Pedro Creek 0.0 cfs Very low ±0 16 mi
Cibolo Creek at Sutherland SpringsRiver gauge, Cibolo Creek 6.41 ft Low +0.03 ft 19 mi

Questions and answers

Is the San Antonio River near Elmendorf higher than last year?

No, it is 0.13 ft lower than on the same day last year, when the reading was 9.62 ft.

What is flood stage for the San Antonio River near Elmendorf?

The official flood stage is 35.00 ft. The level is currently 25.51 ft below it.

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

The median for mid-October is 11.24 ft. In 8 years out of 10 the reading falls between 7.67 ft and 16.29 ft, based on 38 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 near Elmendorf today?

On Oct 19, 2026, 11:30 AM CDT, the water level was 9.49 ft. Steady over the last 24 hours.

Is San Antonio River near Elmendorf rising or falling?

Steady over the last 24 hours. Down 0.50 ft over the last 7 days.

Is the level of San Antonio River near Elmendorf normal?

Normal for mid-October. Compared with 38 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:08181800 (Agency page)
Coordinates
29.22219, -98.35585 (WGS84)
Vertical datum
NGVD29
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 9.49 ft 2026-10-19 16:30 Provisional
Flow 114 cfs 2026-10-19 16:30 Provisional
Water temperature 76 °F 2026-10-19 16:30 Provisional

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How to cite

U.S. Geological Survey: San Antonio River near Elmendorf (usgs:08181800). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/san-antonio-river-near-elmendorf

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.