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 March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, 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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Inundation Mapping

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 (CDT) 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 Colorado River (TX) near Smithville are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 28 Moderate Flood Stage: 23 Flood Stage: 20 Action Stage: 10 Low Stage (in feet): -9999 Historic Crests (1) 47.40 ft on 12/04/1913 (2) 42.50 ft on 06/16/1936 (3) 36.02 ft on 07/27/1938 (4) 34.75 ft on 10/18/1998 (5) 31.91 ft on 08/28/2017 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 31.91 ft on 08/28/2017 (2) 30.09 ft on 05/28/2016 (3) 30.02 ft on 11/01/2015 (P) (4) 29.87 ft on 05/27/2015 (5) 27.85 ft on 11/23/2004 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:16 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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34	Several tens of homes flood above Smithville in Hidden Valley Estates, Doty River Estates, and Pecan Shores Estates, some to the roofs. Homes flood also below Smithville near Kirtley. Flow reaches near the lowest businesses in Smithville.
30	Major flooding inundates homes five miles upstream in Hidden Valley Estates, three miles upstream in Doty River Estates, one mile upstream in Pecan Shores Estates just above Smithville and in Kirtley below Smithville.
28	Major flooding inundates homes five miles upstream in Hidden Valley Estates, three miles upstream in Doty River Estates, one mile upstream in Pecan Shores Estates just above Smithville and in Kirtley below Smithville.
25	Flow threatens lowest residences five miles upstream at Hidden Valley Estates and three miles upstream at Doty River Estates. Roads and bridges near the river flood and are dangerous to motorists.
23	Moderate lowland flooding extends well into the flood plain inundating lowest homes and bridges below Bastrop to above Columbus.
20	Minor lowland flooding reaches secondary roads and low water crossings near the river
14	Overbank conditions with water covering low areas of the flood plain with no significant impact.
10	Flow exceeds lowest sections of the banks.

About This Location

Latitude: 30.012500° N, Longitude: 97.161667° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 20 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 270.14 ft 290.14 ft 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 Smithville

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