Leon Creek at Loop 410 near Leon Valley, TX
River level and flood forecast · Bexar County
Normal4.1 ftas of Mon 2 PM
Flow: 0 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
What floods at each level
From the National Weather Service, highest first.
- 18 ftWater 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 ftWater 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.
- 7.5 ftFlood waters overtop the westbound US HWY 90 access road.
- 6 ftFlood waters overtop Pinn Road at the crossing.
Highest crests on record
- 31.04 ft — May 25, 2013
- 28.6 ft — October 30, 2015
- 26.5 ft — October 9, 2011
- 25.12 ft — May 26, 2015
- 24.48 ft — May 26, 2014
Recent crests: 18.74 ft (June 12, 2025) · 11.16 ft (January 22, 2024) · 11.87 ft (April 21, 2023) · 17.89 ft (October 14, 2021) · 18.65 ft (July 6, 2021)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (LECT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.