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This probabilistic forecast is issued by the West Gulf River Forecast Center.
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About this graph
Forecasts for the West Fork San Jacinto River near Conroe are issued as needed during times of high water, but are not routinely available.
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Downstream Gauge Downstream Gauge - near Porter
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 117.8
Moderate Flood Stage: 116.8
Flood Stage: 115.8
Action Stage: 114.8
Low Stage (in feet): -9999

Historic Crests
(1) 126.93 ft on 08/29/2017
(2) 126.10 ft on 10/18/1994
(3) 123.22 ft on 06/03/1950
(4) 123.15 ft on 08/30/1945
(5) 123.00 ft on 04/22/1926
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(P): Preliminary values subject to further review.

Recent Crests
(1) 126.93 ft on 08/29/2017
(2) 121.14 ft on 05/28/2016
(3) 116.51 ft on 05/28/2015
(4) 116.05 ft on 05/13/2015
(5) 114.24 ft on 02/13/2004
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(P): Preliminary values subject to further review.

Low Water Records
(1) 96.60 ft on 08/20/1981
(2) 96.70 ft on 04/29/1990
(3) 96.75 ft on 08/28/1988
Show More Low Water Records
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Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
126.09 Flood of record set October 18, 1994.
122.8 approach the flood of record.
117.8 Major lowland flooding begins.
116.8 Moderate lowland flooding begins.
115.8 Minor lowland flooding begins.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
The datum of this gauge changed from 95.03 feet NGVD29 to 0 feet NAVD88, 2001 adjustment on October 1, 2012. Thi9s change became effective on January 3, 2013 and required an adjustment of action and flood stages as well as historical data.
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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
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Page last modified: 30-Oct-2020 4:09 PM
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