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Medina Lake near San Antonio water level

Lake, Medina Lake, Texas, United States

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High for mid-October

Surface elevation

1,020.17ft Down 0.07 ft over the last 24 hours

Water stored
71,900 acre‑ft
1,000 1,050 Highest onrecord 1,065.76 ft Minor floodstage 1,064.20 ft

History

1,0001,050ftOct 16Oct 17Oct 18Oct 19Oct 20Minor flood stage1,0001,050ftOct 16Oct 18Oct 20Minor flood stage
1,0001,050ftSep 21Sep 28Oct 5Oct 13Oct 20Minor flood stage1,0001,050ftSep 21Oct 5Oct 20Minor flood stage
1,0001,050ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage1,0001,050ftOct 2025Apr 2026Oct 2026Minor flood stage
1,0001,050ftOct 2020Apr 2022Oct 2023Apr 2025Oct 2026Minor flood stage1,0001,050ftOct 2020Oct 2023Oct 2026Minor flood stage
9801,0001,0201,040ftJanMarMayJulSepNov20269801,0001,0201,040ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %) Minor flood stage

What this means

Medina Lake near San Antonio is above normal at 1,020.17 ft.

That puts it 33.79 ft above the median of 986.38 ft for mid-October, based on 7 years of readings. It is 44.03 ft below the flood stage of 1,064.20 ft. A year ago it stood at 981.99 ft (+38.18 ft).

It has dropped 0.07 ft over the past 24 hours. In the last month it has stayed between 1,020.17 ft and 1,020.96 ft.

Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt.

Compared with 7 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
986.38 ft33.79 ft above the median for this date
Normal for this date
973.09 ft – 1,036.71 ft8 years in 10 fall in this range (7 years of records)
Same day last year
981.99 ft+38.18 ft
Lowest and highest in 30 days
1,020.17 ft – 1,020.96 ft
Lowest and highest in 12 months
976.55 ft – 1,022.08 ft
Highest on record
1,065.76 ftJune 3, 2016

On the water at Medina Lake near San Antonio

With the level a bit above normal, expect a shoreline slightly higher up than usual and the odd floating branch.

Wear a life jacket on the water. Most boating deaths involve people who were not wearing one.

What happens at each level

1,076.00 ft
Top of dam structure.
1,070.00 ft
Lowest homes around Medina Lake have several feet of water in them. Many homes flood downstream in Bexar County near Von Army and Lacoste.
1,068.00 ft
The lowest homes aruond Medina Lake flood. Docks and facilities around the lake flood.
1,064.50 ft
Boats are damaged and docks around Medina lake swamped if ties aren't loosened.
1,064.20 ft
Flow passes through the emergency spillway. Lowest homes at the upper end of the lake are threatened.** Medina lake pool height referenced to mean sea level as of October 1, 2002. Users of historical data will need to decrease historical levels by 7.8 feet when comparing to current readings.
1,020.17 ft
Right now

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

Weather at the gauge

No rain in the last 3 days.

19 Mon 78° 51° – Wind 8 mph
20 Tue 80° 60° – Wind 10 mph
21 Wed 84° 58° – Wind 9 mph
22 Thu 84° 63° – Wind 9 mph
23 Fri 84° 60° – Wind 13 mph
24 Sat 84° 60° – Wind 14 mph
25 Sun 78° 64° – Wind 11 mph

Forecast: Open-Meteo

Sunrise 07:41 AM Sunset 07:01 PM Daylight 11 hr, 20 min First quarter 68%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Middle Verde Creek at SH 173 near BanderaRiver gauge, Middle Verde Creek 3.16 ft Normal ±0 10 mi
San Geronimo Creek near HelotesRiver gauge, San Geronimo Creek 2.35 ft Normal ±0 10 mi
Medina River above English Crsg near Pipe CreekRiver gauge, Medina River 19.3 cfs Normal ±0 11 mi
Helotes Creek at HelotesRiver gauge, Helotes Creek 0.89 ft Normal ±0 15 mi
Medina River at BanderaRiver gauge, Medina River 3.58 ft Normal −0.02 ft 15 mi
Hondo Creek at SH 173 near HondoRiver gauge, Hondo Creek 0.69 ft Normal ±0 16 mi
Medina River at La CosteRiver gauge, Medina River 6.12 ft Below flood stage −2.92 ft 17 mi
Hondo Creek near TarpleyRiver gauge, Hondo Creek 2.38 ft High −0.01 ft 19 mi

Questions and answers

How does Medina Lake near San Antonio compare with last year?

It is 38.18 ft higher than on the same day last year, when the reading was 981.99 ft.

What is a normal level for Medina Lake near San Antonio in mid-October?

The median for mid-October is 986.38 ft. In 8 years out of 10 the reading falls between 973.09 ft and 1,036.71 ft, based on 7 years of records.

Is Medina Lake near San Antonio really 1,020.17 ft deep?

No. 1,020.17 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Medina Lake near San Antonio today?

On Oct 20, 2026, 08:00 AM CDT, the surface elevation was 1,020.17 ft. Down 0.07 ft over the last 24 hours.

Is Medina Lake near San Antonio rising or falling?

Down 0.07 ft over the last 24 hours. Down 0.38 ft over the last 7 days.

Is the level of Medina Lake near San Antonio normal?

High for mid-October. Compared with 7 years of daily readings for this time of year.

What is the highest water level ever recorded at Medina Lake near San Antonio?

The highest level on record is 1,065.76 ft on June 3, 2016.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:08179500 (Agency page)
Coordinates
29.54023, -98.93395 (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
Surface elevation 1,020.17 ft 2026-10-20 13:00 Provisional
Water stored 71,900 acre‑ft 2026-10-20 13:00 Provisional

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How to cite

U.S. Geological Survey: Medina Lake near San Antonio (usgs:08179500). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/medina-lake-near-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.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer