Leon Creek at I-35S near San Antonio
Texas — Water Level & Flood Stage
Located in Bexar County, Texas on the Leon Creek. Live water level data from USGS gauge 08181480, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
20 ft
10,654 cfs
Moderate Flood
16 ft
4,666 cfs
Minor Flood
15 ft
3,657 cfs
Action Stage
13 ft
2,217 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
26 ft
Major flooding of primary and secondary roads and bridges from above Highway 90 to below I-35. Evacuations may be required from homes and the mobile home park in the flood plain and along New Laredo Highway as water is likely to enter structures. The approaches and shoulders to the I-35 bridge will flood. At the 26 foot level water is nearing the bottom of the I-35 bridge. Flooding is observed around the StandardAero facility.
25 ft
The mobile home park on New Laredo Highway will flood. Approaches and shoulders to the I-35 bridge will begin to flood with traffic likely restricted to one lane. Flooding will occur at the StandardAero facility.
22 ft
Homes and businesses in the flood plain along Leon Creek may flood and evacuations may be required. Residents in the mobile home park near Leon Creek on New Laredo Highway should prepare for flooding. Most primary and secondary roads and low bridges near Leon Creek are flooded. Camargo Park near Nelson Wolff Stadium will see flooding.
20 ft
Major flooding could reach or enter structures above Kelly USA down to I-35. Several horse barns are flooded. Roads, streets and low bridges in the flood plain and near Leon Creek can flood and become dangerous and deadly. The northbound and southbound medians to the I-35 bridge and service roads will begin to flood. Flooding will begin around the StandardAero facility.
16 ft
Camargo Park near Nelson Wolff Stadium will begin to see water entering the park in areas that are close to the creek. Primary and secondary roads and bridges will begin to see flooding from above Kelly USA to below I-35. Flow approaches horse barns and homes below Kelly USA.
15 ft
Moderate flooding in the floodplain that will begin to approach primary and secondary roads and low bridges above Kelly USA to below I-35. Water may begin to approach homes in the lowest areas from near Nelson Wolff Stadium to I-35.
13 ft
Minor lowland flooding begins to approach secondary roads and low bridges above Kelly USA to below I-35.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Oct 18, 1998 | 29.31 ft | 93,300 cfs |
| Oct 18, 1998 | 29.31 ft | 93,300 cfs |
| May 25, 2013 | 27.62 ft | 50,257 cfs |
| May 25, 2013 | 27.62 ft | 50,257 cfs |
| Jul 1, 2002 | 27.2 ft | 45,200 cfs |
About This Gauge
Get Flood Alerts for Leon Creek
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Frequently Asked Questions
What is the current water level of Leon Creek at I-35S near San Antonio?
The Leon Creek at I-35S near San Antonio gauge is maintained by USGS (site 08181480) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Leon Creek at I-35S near San Antonio?
The NWS-defined flood stage for Leon Creek at I-35S near San Antonio is 15 feet. Action stage begins at 13 feet. Moderate flooding starts at 16 feet, and major flooding at 20 feet.
How do I get alerts when Leon Creek rises?
Download StormCast free on Google Play, go to River Gauges, and add Leon Creek at I-35S near San Antonio to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Leon Creek at I-35S near San Antonio gauge located?
The gauge is located in Bexar County, Texas at coordinates 29.3297°N, 98.5839°W. USGS site number: 08181480. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.