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Weather Forecast Office Houston/Galveston, TX

West Gulf River Forecast Center

Flood Warning

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 (CDT) Datum: Not Available 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 Trinity River at Riverside are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 140 Moderate Flood Stage: 136 Flood Stage: 133.5 Action Stage: 132 Low Stage (in feet): 0 Historic Crests (1) 142.61 ft on 05/05/1942 (2) 141.69 ft on 04/09/1945 (3) 139.61 ft on 05/04/1957 (4) 139.56 ft on 06/11/1908 (5) 138.93 ft on 10/18/2018 (P) Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 133.78 ft on 07/15/2021 (P) (2) 136.46 ft on 06/09/2021 (P) (3) 133.72 ft on 01/09/2021 (P) (4) 133.54 ft on 02/22/2020 (P) (5) 134.95 ft on 06/19/2019 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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140	Major lowland flooding begins with widespread flooding in Trinity and Walker Counties. Water is in several homes in the Deep River Plantation and Green Rich Shores subdivisions. Roads into several subdivisions in Walker and Trinity Counties and secondary roads along the river are inundated.
138	Moderate lowland flooding continues with water 3 to 4 feet below the State Highway 19 Bridge and Plantation Drive near FM 230 is inundated. FM 2978 is flooded and impassable. Up to one foot of water is flowing over Thomas Lake Road which remains impassable. Several roads into the Green Rich Shores and Deep River Plantation subdivisions are covered with up to one foot of water and homes in Deep River Plantation are threatened.
137	Moderate lowland flooding continues as several homes in the Green Rich Shores Subdivision in Walker County flood and water covers Thomas Lake Road. The lowest buildings off FM 980 northwest of Riverside flood.
136.8	Moderate lowland flooding continues as the approaches to the FM 3478 bridge upstream of the gage are inundated and impassable. The lowest homes in the Green Rich Shores Subdivision are flooded with up to one half foot of water. Thomas Lake Road remains flooded and the lowest roads into properties off FM 980 northwest of Riverside are inundated and impassable.
136	Moderate lowland flooding begins in the vicinity of the gage. The lowest homes in the Green Rich Shores Subdivision are flooded and Thomas Lake Road is inundated and impassable. Low roads in the Deep River Plantation Subdivision are inundated. The lowest roads into properties off FM 980 northwest of Riverside are inundated and the lowest buildings are threatened.
135	Minor lowland flooding continues as significant backwater up Thomas Lake floods the lowest areas in the Green Rich Shore Subdivision in Walker County with the boat ramp completely inundated. The lowest lying areas in the Deep River Plantation Subdivision and FM 980 northwest of Riverside are threatened.
134	Minor lowland flooding continues with the boat ramp in the Deep River Plantation Subdivision in Walker County inundated. Backwater flooding up Thomas Lake in Walker County floods the boat ramp in the Green Rich Shores Subdivision in Walker County.
133.5	Minor lowland flooding begins in the vicinity of the gage with water in the Green Rich Shores subdivision. Backwater flooding up Wright's Creek impacts Plantation Drive in the Deep River Plantation subdivision.
132	Bankfull stage. Water begins to overflow the main channel in the vicinity of the gage.

About This Location

Latitude: 30.859167° N, Longitude: 95.398611° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 133.5 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other NULL NULL   Current/Historical Observations: Corps of Engineers (COE) Info for Riverside U.S. Geological Survey (USGS) Data and Site Info for Riverside

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary United States Geological Survey Drought Indicies Inundation Mapping Locations Weather Prediction Center

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management West Gulf River Forecast Center Harris County Flood Control District Brazoria County Office of Emergency Management Fort Bend County State of Texas Office of Emergency Management Trinity River Authority San Jacinto River Authority Brazos River Authority Lower Colroado River Authority Lavaca-Navidad River Authority 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 Houston/Galveston Weather Forecast Office 1353 FM 646, Suite 202 Dickinson, TX 77539 (281) 337-5074 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities