Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Austin/San Antonio, TX

West Gulf River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (CST) Datum: NAVD88 Metadata

NOTE: 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. NOTE: Forecasts for the Barton Creek at Loop 360 are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 12 Moderate Flood Stage: 11 Flood Stage: 8 Action Stage: 8 Low Stage (in feet): -9999 Historic Crests (1) 26.00 ft on 05/25/1929 (2) 19.18 ft on 05/04/2019 (3) 19.10 ft on 10/30/2015 (P) (4) 17.87 ft on 07/03/2002 (5) 15.50 ft on 11/16/2001 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 13.17 ft on 05/09/2019 (2) 19.18 ft on 05/04/2019 (3) 19.10 ft on 10/30/2015 (P) (4) 13.20 ft on 05/26/2015 (5) 13.13 ft on 05/24/2015 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:19 Legend FEMA Layer Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

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26	Flow is near the USGS 1:100 year flood level (26 feet - 44,400 cfs). Disastrous flooding reaches several homes in the lower flood plain. Streets, roads and bridges are very dangerous to motorists. Barton Springs Pool is severely damaged.
25	Flow reaches the usgs 1:50 year flood level (34,200 cfs). Major flooding severely damages Barton Springs Pool downstream. Roads, streets and bridges are extremely dangerous to motorists. Lowest residences are threatened.
23	Major, very dangerous flooding occurs. Many streets and bridges above Loop 360 to the Colorado River are very dangerous. Nearing the USGS 1:50 foot flood level. Barton Springs Pool is severely damaged. Lowest residences are threatened.
22	The Barton Creek flood plain is very dangerous. Travel should be prohibited on streets and bridges that cross the flood plain. Barton Springs Pool will be severely impacted with major damage. Well in excess of a 1:25 year flood. Lowest residences are threatened.
20	Flow is in excess of the USGS 1:25 year flood level. Severe flooding damage to Barton Springs Pool downstream. Major flooding makes low lying streets and bridges very dangerous.
18	Major flooding of the lower flood plain occurs including Barton Springs Pool. Flow reaches the usgs 1:25 year flood level (25,400 cfs). Low roads, streets and bridges are severely flooded and dangerous.
16	Major flooding causes severe damage to Barton Springs Pool downstream. Roads, streets and bridges are severely flooding and dangerous in the Barton Creek flood plain.
14	Major flooding covers lower areas of Barton Springs Pool downstream. Jogging and biking trails in the lower flood plain are flooded. Flow is near the USGS 1:10 year flood level of 14.2 feet.
12	Major flooding puts flow overbanks in Barton Springs Pool downstream. Roads and low bridges are very dangerous above Loop 360 to the Colorado River.
11	Minor lowland flooding reaches lowest secondary roads and low bridges. Significant rise downstream in Barton Springs Pool.
8	Flow exceeds lowest sections of the banks.

About This Location

Latitude: 30.244444° N, Longitude: 97.801944° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 8 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 511.11 519.11 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Loop 360

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Rainfall Frequency Atlas Maps Weather Prediction Center Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management West Gulf River Forecast Center Lower Colorado River Authority Guadalupe Blanco River Authority San Antonio River Authority Edwards Aquifer Authority Nueces River Authority International Boundary and Water Commission Snow Information

Collaborative Agencies The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here. NWS Information National Weather Service Austin/San Antonio Weather Forecast Office 2090 Airport Road New Braunfels, TX 78130 (830) 629-0130 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities