Leon Creek at Lp 410 at San Antonio water level

Name: Leon Creek at Lp 410 at San Antonio water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Leon Creek, Texas, United States

Directions

Low for mid-October

Water level

4.02ft Steady over the last 24 hours

Measured Oct 20, 2026, 12:00 PM CDT (1 hour ago)

Flow: 0.0 cfs

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

At 4.02 ft, Leon Creek at Lp 410 at San Antonio is below normal for mid-October.

The median for mid-October is 5.18 ft, based on 11 years of readings, so the river stage is 1.16 ft below typical. On the same day last year the reading was 3.63 ft, a difference of +0.39 ft.

It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 3.65 ft and 7.23 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 11 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 5.18 ft1.16 ft below the median for this date
Normal for this date: 3.61 ft – 18.67 ft8 years in 10 fall in this range (11 years of records)
Same day last year: 3.63 ft+0.39 ft
Lowest and highest in 30 days: 3.65 ft – 7.23 ft
Lowest and highest in 12 months: 3.46 ft – 10.63 ft
Highest on record: 31.04 ftMay 25, 2013

What the stage means on the water

Low water means more dragging on shallow riffles and slower floats. Fish crowd into the deeper runs, and warm, low water stresses them, so play and release them quickly.

What happens at each level

18.00 ft: Water will flood Heath Road. Homes along and to the west of Heath Road from Heliport Drive to Misty Moon will likely experience flooding that could be several feet deep. All low lying prinary and secondary roads near or along Leon Creek will be flooded and dangerous.
16.00 ft: Water will flood portions of Heath Road from Heliport Drive to Misty Moon. Water will begin to approach and could enter homes on the west side of Heath Road. Low lying primary and secondary roads in or near Leon Creek will be flooded and dangerous.
7.50 ft: Flood waters overtop the westbound US HWY 90 access road.
6.00 ft: Flood waters overtop Pinn Road at the crossing.
4.02 ft: Right now

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

Highest crests on record

Rank	Level	Date
1	31.04 ft	May 25, 2013
2	28.60 ft	October 30, 2015
3	26.50 ft	October 9, 2011
4	25.12 ft	May 26, 2015
5	24.48 ft	May 26, 2014
6	21.13 ft	February 23, 2016
7	18.74 ft	June 12, 2025
8	18.65 ft	July 6, 2015
9	18.65 ft	July 6, 2021
10	17.89 ft	October 14, 2021

Weather at the gauge

No rain in the last 3 days.

18 Sun 72° 47° – Wind 6 mph

19 Mon 74° 53° – Wind 7 mph

20 Tue 81° 60° – Wind 12 mph

21 Wed 82° 64° – Wind 10 mph

22 Thu 84° 63° – Wind 8 mph

23 Fri 84° 60° – Wind 12 mph

24 Sat 85° 62° – Wind 13 mph

Forecast: Open-Meteo

Sunrise 07:40 AM Sunset 07:00 PM Daylight 11 hr, 20 min Waxing gibbous 70%

Map

Other gauges on Leon Creek

Gauge	Level	Compared with normal	24 hours	Distance
Leon Creek at IH 10 and Loop 1604 near San AntonioRiver gauge, Leon Creek	982.59 ft	Highest on record	±0	10 mi
Leon Creek at SH 90, San AntonioRiver gauge, Leon Creek	4.16 ft	No reference yet	−0.01 ft	3.3 mi
Leon Creek at IH 35, San AntonioRiver gauge, Leon Creek	2.25 ft	Normal	−0.01 ft	9 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
San Pedro Creek at Furnish St, San AntonioRiver gauge, San Pedro Creek	0.4 cfs	Very low	+0.4 cfs	8 mi
Olmos Creek at Dresden Dr, San AntonioRiver gauge, Olmos Creek	1.81 ft	Normal	±0	8 mi
Medina River near MacdonaRiver gauge, Medina River	−0.02 ft	Low	+0.05 ft	8 mi
San Antonio River at San AntonioRiver gauge, San Antonio River	3.96 ft	Normal	+0.02 ft	9 mi
San Antonio River at Mitchell St, San AntonioRiver gauge, San Antonio River	4.30 ft	Normal	+0.04 ft	9 mi
Helotes Creek at HelotesRiver gauge, Helotes Creek	0.90 ft	Normal	+0.01 ft	10 mi
Medina River near SomersetRiver gauge, Medina River	4.05 ft	Low	+0.01 ft	13 mi
Salado Creek at Wilderness Rd, San AntonioRiver gauge, Salado Creek	0.03 ft	Low	+0.01 ft	13 mi

Questions and answers

Is Leon Creek at Lp 410 at San Antonio higher than last year?

Yes, it is 0.39 ft higher than on the same day last year, when the reading was 3.63 ft.

What is a normal level for Leon Creek at Lp 410 at San Antonio in mid-October?

The median for mid-October is 5.18 ft. In 8 years out of 10 the reading falls between 3.61 ft and 18.67 ft, based on 11 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 Leon Creek at Lp 410 at San Antonio today?

On Oct 20, 2026, 12:00 PM CDT, the water level was 4.02 ft. Steady over the last 24 hours.

Is Leon Creek at Lp 410 at San Antonio rising or falling?

Steady over the last 24 hours. Down 0.11 ft over the last 7 days.

Is the level of Leon Creek at Lp 410 at San Antonio normal?

Low for mid-October. Compared with 11 years of daily readings for this time of year.

What is the highest water level ever recorded at Leon Creek at Lp 410 at San Antonio?

The highest level on record is 31.04 ft on May 25, 2013.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:08181435 (Agency page)
Coordinates: 29.44787, -98.63371 (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

Parameter	Last value	Time (UTC)	Quality
Water level	4.02 ft	2026-10-20 17:00	Provisional
Flow	0.0 cfs	2026-10-20 17:00	Provisional

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How to cite

U.S. Geological Survey: Leon Creek at Lp 410 at San Antonio (usgs:08181435). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/leon-creek-at-lp-410-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.

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