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Hydrograph River at a Glance Download
West Fork San Jacinto River near Porter Stage (ft)Flow (kcfs)Observed: 58.23 ft at 10:45PM Aug 19, 2019Observed: 58.24 ft at 11:00PM Aug 19, 2019Observed: 58.24 ft at 11:15PM Aug 19, 2019Observed: 58.24 ft at 11:30PM Aug 19, 2019Observed: 58.24 ft at 11:45PM Aug 19, 2019Observed: 58.25 ft at 12:00AM Aug 20, 2019Observed: 58.25 ft at 12:15AM Aug 20, 2019Observed: 58.25 ft at 12:30AM Aug 20, 2019Observed: 58.25 ft at 12:45AM Aug 20, 2019Observed: 58.25 ft at 1:00AM Aug 20, 2019Observed: 58.25 ft at 1:15AM Aug 20, 2019Observed: 58.25 ft at 1:30AM Aug 20, 2019Observed: 58.25 ft at 1:45AM Aug 20, 2019Observed: 58.25 ft at 2:00AM Aug 20, 2019Observed: 58.24 ft at 2:15AM Aug 20, 2019Observed: 58.24 ft at 2:30AM Aug 20, 2019Observed: 58.24 ft at 2:45AM Aug 20, 2019Observed: 58.25 ft at 3:00AM Aug 20, 2019Observed: 58.25 ft at 3:15AM Aug 20, 2019Observed: 58.26 ft at 3:30AM Aug 20, 2019Observed: 58.26 ft at 3:45AM Aug 20, 2019Observed: 58.26 ft at 4:00AM Aug 20, 2019Observed: 58.25 ft at 4:15AM Aug 20, 2019Observed: 58.25 ft at 4:30AM Aug 20, 2019Observed: 58.25 ft at 4:45AM Aug 20, 2019Observed: 58.25 ft at 5:00AM Aug 20, 2019Observed: 58.24 ft at 5:15AM Aug 20, 2019Observed: 58.24 ft at 5:30AM Aug 20, 2019Observed: 58.24 ft at 5:45AM Aug 20, 2019Observed: 58.24 ft at 6:00AM Aug 20, 2019Observed: 58.24 ft at 6:15AM Aug 20, 2019Observed: 58.25 ft at 6:30AM Aug 20, 2019Observed: 58.25 ft at 6:45AM Aug 20, 2019Observed: 58.25 ft at 7:00AM Aug 20, 2019Observed: 58.25 ft at 7:15AM Aug 20, 2019Observed: 58.25 ft at 7:30AM Aug 20, 2019Observed: 58.25 ft at 7:45AM Aug 20, 2019Observed: 58.26 ft at 8:00AM Aug 20, 2019Observed: 58.27 ft at 8:15AM Aug 20, 2019Observed: 58.26 ft at 8:30AM Aug 20, 2019Observed: 58.26 ft at 8:45AM Aug 20, 2019Observed: 58.26 ft at 9:00AM Aug 20, 2019Observed: 58.26 ft at 9:15AM Aug 20, 2019Observed: 58.26 ft at 9:30AM Aug 20, 2019Observed: 58.25 ft at 9:45AM Aug 20, 2019Observed: 58.26 ft at 10:00AM Aug 20, 2019Observed: 58.27 ft at 10:15AM Aug 20, 2019Observed: 58.26 ft at 10:30AM Aug 20, 2019Observed: 58.27 ft at 10:45AM Aug 20, 2019Observed: 58.25 ft at 11:00AM Aug 20, 2019Observed: 58.26 ft at 11:15AM Aug 20, 2019Observed: 58.26 ft at 11:30AM Aug 20, 2019Observed: 58.25 ft at 11:45AM Aug 20, 2019Observed: 58.25 ft at 12:00PM Aug 20, 2019Observed: 58.26 ft at 12:15PM Aug 20, 2019Observed: 58.25 ft at 12:30PM Aug 20, 2019Observed: 58.24 ft at 12:45PM Aug 20, 2019Observed: 58.24 ft at 1:00PM Aug 20, 2019Observed: 58.22 ft at 1:15PM Aug 20, 2019Observed: 58.23 ft at 1:30PM Aug 20, 2019Observed: 58.24 ft at 1:45PM Aug 20, 2019Observed: 58.24 ft at 2:00PM Aug 20, 2019Observed: 58.24 ft at 2:15PM Aug 20, 2019Observed: 58.24 ft at 2:30PM Aug 20, 2019Observed: 58.24 ft at 2:45PM Aug 20, 2019Observed: 58.21 ft at 3:00PM Aug 20, 2019Observed: 58.23 ft at 3:15PM Aug 20, 2019Observed: 58.22 ft at 3:30PM Aug 20, 2019Observed: 58.23 ft at 3:45PM Aug 20, 2019Observed: 58.23 ft at 4:00PM Aug 20, 2019Observed: 58.24 ft at 4:15PM Aug 20, 2019Observed: 58.24 ft at 4:30PM Aug 20, 2019Observed: 58.24 ft at 4:45PM Aug 20, 2019Observed: 58.24 ft at 5:00PM Aug 20, 2019Observed: 58.25 ft at 5:15PM Aug 20, 2019Observed: 58.25 ft at 5:30PM Aug 20, 2019Observed: 58.25 ft at 5:45PM Aug 20, 2019Observed: 58.24 ft at 6:00PM Aug 20, 2019Observed: 58.23 ft at 6:15PM Aug 20, 2019Observed: 58.23 ft at 6:30PM Aug 20, 2019Observed: 58.23 ft at 6:45PM Aug 20, 2019Observed: 58.22 ft at 7:00PM Aug 20, 2019Observed: 58.22 ft at 7:15PM Aug 20, 2019Observed: 58.22 ft at 7:30PM Aug 20, 2019Observed: 58.23 ft at 7:45PM Aug 20, 2019Observed: 58.24 ft at 8:00PM Aug 20, 2019Observed: 58.25 ft at 8:15PM Aug 20, 2019Observed: 58.25 ft at 8:30PM Aug 20, 2019Observed: 58.25 ft at 8:45PM Aug 20, 2019Observed: 58.24 ft at 9:00PM Aug 20, 2019Observed: 58.24 ft at 9:15PM Aug 20, 2019Observed: 58.24 ft at 9:30PM Aug 20, 2019Observed: 58.24 ft at 9:45PM Aug 20, 2019Observed: 58.24 ft at 10:00PM Aug 20, 2019Observed: 58.25 ft at 10:15PM Aug 20, 2019Observed: 58.24 ft at 10:30PM Aug 20, 2019Observed: 58.25 ft at 10:45PM Aug 20, 2019Observed: 58.25 ft at 11:00PM Aug 20, 2019Observed: 58.25 ft at 11:15PM Aug 20, 2019Observed: 58.25 ft at 11:30PM Aug 20, 2019Observed: 58.25 ft at 11:45PM Aug 20, 2019Observed: 58.25 ft at 12:00AM Aug 21, 2019Observed: 58.25 ft at 12:15AM Aug 21, 2019Observed: 58.24 ft at 12:30AM Aug 21, 2019Observed: 58.24 ft at 12:45AM Aug 21, 2019Observed: 58.25 ft at 1:00AM Aug 21, 2019Observed: 58.25 ft at 1:15AM Aug 21, 2019Observed: 58.25 ft at 1:30AM Aug 21, 2019Observed: 58.24 ft at 1:45AM Aug 21, 2019Observed: 58.24 ft at 2:00AM Aug 21, 2019Observed: 58.25 ft at 2:15AM Aug 21, 2019Observed: 58.25 ft at 2:30AM Aug 21, 2019Observed: 58.25 ft at 2:45AM Aug 21, 2019Observed: 58.26 ft at 3:00AM Aug 21, 2019Observed: 58.26 ft at 3:15AM Aug 21, 2019Observed: 58.26 ft at 3:30AM Aug 21, 2019Observed: 58.26 ft at 3:45AM Aug 21, 2019Observed: 58.26 ft at 4:00AM Aug 21, 2019Observed: 58.26 ft at 4:15AM Aug 21, 2019Observed: 58.26 ft at 4:30AM Aug 21, 2019Observed: 58.25 ft at 4:45AM Aug 21, 2019Observed: 58.25 ft at 5:00AM Aug 21, 2019Observed: 58.26 ft at 5:15AM Aug 21, 2019Observed: 58.26 ft at 5:30AM Aug 21, 2019Observed: 58.27 ft at 5:45AM Aug 21, 2019Observed: 58.27 ft at 6:00AM Aug 21, 2019Observed: 58.27 ft at 6:15AM Aug 21, 2019Observed: 58.27 ft at 6:30AM Aug 21, 2019Observed: 58.27 ft at 6:45AM Aug 21, 2019Observed: 58.27 ft at 7:00AM Aug 21, 2019Observed: 58.26 ft at 7:15AM Aug 21, 2019Observed: 58.26 ft at 7:30AM Aug 21, 2019Observed: 58.26 ft at 7:45AM Aug 21, 2019Observed: 58.27 ft at 8:00AM Aug 21, 2019Observed: 58.28 ft at 8:15AM Aug 21, 2019Observed: 58.28 ft at 8:30AM Aug 21, 2019Observed: 58.28 ft at 8:45AM Aug 21, 2019Observed: 58.27 ft at 9:00AM Aug 21, 2019Observed: 58.27 ft at 9:15AM Aug 21, 2019Observed: 58.28 ft at 9:30AM Aug 21, 2019Observed: 58.28 ft at 9:45AM Aug 21, 2019Observed: 58.28 ft at 10:00AM Aug 21, 2019Observed: 58.28 ft at 10:15AM Aug 21, 2019Observed: 58.28 ft at 10:30AM Aug 21, 2019Observed: 58.28 ft at 10:45AM Aug 21, 2019Observed: 58.28 ft at 11:00AM Aug 21, 2019Observed: 58.28 ft at 11:15AM Aug 21, 2019Observed: 58.27 ft at 11:30AM Aug 21, 2019Observed: 58.27 ft at 11:45AM Aug 21, 2019Observed: 58.26 ft at 12:00PM Aug 21, 2019Observed: 58.27 ft at 12:15PM Aug 21, 2019Observed: 58.26 ft at 12:30PM Aug 21, 2019Observed: 58.26 ft at 12:45PM Aug 21, 2019Observed: 58.26 ft at 1:00PM Aug 21, 2019Observed: 58.26 ft at 1:15PM Aug 21, 2019Observed: 58.26 ft at 1:30PM Aug 21, 2019Observed: 58.26 ft at 1:45PM Aug 21, 2019Observed: 58.26 ft at 2:00PM Aug 21, 2019Observed: 58.26 ft at 2:15PM Aug 21, 2019Observed: 58.26 ft at 2:30PM Aug 21, 2019Observed: 58.26 ft at 2:45PM Aug 21, 2019Observed: 58.26 ft at 3:00PM Aug 21, 2019Observed: 58.26 ft at 3:15PM Aug 21, 2019Observed: 58.25 ft at 3:30PM Aug 21, 2019Observed: 58.25 ft at 3:45PM Aug 21, 2019Observed: 58.25 ft at 4:00PM Aug 21, 2019Observed: 58.2 ft at 4:15PM Aug 21, 2019Observed: 58.23 ft at 4:30PM Aug 21, 2019Observed: 58.25 ft at 4:45PM Aug 21, 2019Observed: 58.26 ft at 5:00PM Aug 21, 2019Observed: 58.25 ft at 5:15PM Aug 21, 2019Observed: 58.24 ft at 5:30PM Aug 21, 2019Observed: 58.24 ft at 5:45PM Aug 21, 2019Observed: 58.25 ft at 6:00PM Aug 21, 2019Observed: 58.25 ft at 6:15PM Aug 21, 2019Observed: 58.24 ft at 6:30PM Aug 21, 2019Observed: 58.25 ft at 6:45PM Aug 21, 2019Observed: 58.25 ft at 7:00PM Aug 21, 2019Observed: 58.25 ft at 7:15PM Aug 21, 2019Observed: 58.25 ft at 7:30PM Aug 21, 2019Observed: 58.24 ft at 7:45PM Aug 21, 2019Observed: 58.25 ft at 8:00PM Aug 21, 2019Observed: 58.24 ft at 8:15PM Aug 21, 2019Observed: 58.25 ft at 8:30PM Aug 21, 2019Observed: 58.26 ft at 8:45PM Aug 21, 2019Observed: 58.26 ft at 9:00PM Aug 21, 2019Observed: 58.26 ft at 9:15PM Aug 21, 2019Observed: 58.26 ft at 9:30PM Aug 21, 2019Observed: 58.26 ft at 9:45PM Aug 21, 2019Observed: 58.26 ft at 10:00PM Aug 21, 2019Observed: 58.26 ft at 10:15PM Aug 21, 2019Observed: 58.25 ft at 10:30PM Aug 21, 2019Observed: 58.25 ft at 10:45PM Aug 21, 2019Observed: 58.25 ft at 11:00PM Aug 21, 2019Observed: 58.26 ft at 11:15PM Aug 21, 2019Observed: 58.26 ft at 11:30PM Aug 21, 2019Observed: 58.26 ft at 11:45PM Aug 21, 2019Observed: 58.26 ft at 12:00AM Aug 22, 2019Observed: 58.27 ft at 12:15AM Aug 22, 2019Observed: 58.27 ft at 12:30AM Aug 22, 2019Observed: 58.27 ft at 12:45AM Aug 22, 2019Observed: 58.27 ft at 1:00AM Aug 22, 2019Observed: 58.29 ft at 1:15AM Aug 22, 2019Observed: 58.29 ft at 1:30AM Aug 22, 2019Observed: 58.3 ft at 1:45AM Aug 22, 2019Observed: 58.3 ft at 2:00AM Aug 22, 2019Observed: 58.31 ft at 2:15AM Aug 22, 2019Observed: 58.31 ft at 2:30AM Aug 22, 2019Observed: 58.32 ft at 2:45AM Aug 22, 2019Observed: 58.32 ft at 3:00AM Aug 22, 2019Observed: 58.32 ft at 3:15AM Aug 22, 2019Observed: 58.33 ft at 3:30AM Aug 22, 2019Observed: 58.33 ft at 3:45AM Aug 22, 2019Observed: 58.34 ft at 4:00AM Aug 22, 2019Observed: 58.36 ft at 4:15AM Aug 22, 2019Observed: 58.36 ft at 4:30AM Aug 22, 2019Observed: 58.37 ft at 4:45AM Aug 22, 2019Observed: 58.37 ft at 5:00AM Aug 22, 2019Observed: 58.37 ft at 5:15AM Aug 22, 2019Observed: 58.39 ft at 5:30AM Aug 22, 2019Observed: 58.39 ft at 5:45AM Aug 22, 2019Observed: 58.4 ft at 6:00AM Aug 22, 2019Observed: 58.41 ft at 6:15AM Aug 22, 2019Observed: 58.42 ft at 6:30AM Aug 22, 2019Observed: 58.42 ft at 6:45AM Aug 22, 2019Observed: 58.42 ft at 7:00AM Aug 22, 2019Observed: 58.43 ft at 7:15AM Aug 22, 2019Observed: 58.43 ft at 7:30AM Aug 22, 2019Observed: 58.44 ft at 7:45AM Aug 22, 2019Observed: 58.44 ft at 8:00AM Aug 22, 2019Observed: 58.45 ft at 8:15AM Aug 22, 2019Observed: 58.45 ft at 8:30AM Aug 22, 2019Observed: 58.45 ft at 8:45AM Aug 22, 2019Observed: 58.46 ft at 9:00AM Aug 22, 2019Observed: 58.46 ft at 9:15AM Aug 22, 2019Observed: 58.46 ft at 9:30AM Aug 22, 2019Observed: 58.47 ft at 9:45AM Aug 22, 2019Observed: 58.48 ft at 10:00AM Aug 22, 2019Observed: 58.47 ft at 10:15AM Aug 22, 2019Observed: 58.48 ft at 10:30AM Aug 22, 2019Observed: 58.48 ft at 10:45AM Aug 22, 2019Observed: 58.47 ft at 11:00AM Aug 22, 2019Observed: 58.47 ft at 11:15AM Aug 22, 2019Observed: 58.48 ft at 11:30AM Aug 22, 2019Observed: 58.47 ft at 11:45AM Aug 22, 2019Observed: 58.48 ft at 12:00PM Aug 22, 2019Observed: 58.46 ft at 12:15PM Aug 22, 2019Observed: 58.47 ft at 12:30PM Aug 22, 2019Observed: 58.48 ft at 12:45PM Aug 22, 2019Observed: 58.47 ft at 1:00PM Aug 22, 2019Observed: 58.47 ft at 1:15PM Aug 22, 2019Observed: 58.46 ft at 1:30PM Aug 22, 2019Observed: 58.44 ft at 1:45PM Aug 22, 2019Observed: 58.45 ft at 2:00PM Aug 22, 2019Observed: 58.46 ft at 2:15PM Aug 22, 2019Observed: 58.47 ft at 2:30PM Aug 22, 2019Observed: 58.46 ft at 2:45PM Aug 22, 2019Observed: 58.47 ft at 3:00PM Aug 22, 2019Observed: 58.46 ft at 3:15PM Aug 22, 2019Observed: 58.47 ft at 3:30PM Aug 22, 2019Observed: 58.47 ft at 3:45PM Aug 22, 2019Observed: 58.47 ft at 4:00PM Aug 22, 2019Observed: 58.47 ft at 4:15PM Aug 22, 2019Observed: 58.45 ft at 4:30PM Aug 22, 2019Observed: 58.47 ft at 4:45PM Aug 22, 2019Observed: 58.46 ft at 5:00PM Aug 22, 2019Observed: 58.44 ft at 5:15PM Aug 22, 2019Observed: 58.44 ft at 5:30PM Aug 22, 2019Observed: 58.45 ft at 5:45PM Aug 22, 2019Observed: 58.45 ft at 6:00PM Aug 22, 2019Observed: 58.46 ft at 6:15PM Aug 22, 2019Observed: 58.46 ft at 6:30PM Aug 22, 2019Observed: 58.46 ft at 6:45PM Aug 22, 2019Observed: 58.45 ft at 7:00PM Aug 22, 2019Observed: 58.45 ft at 7:15PM Aug 22, 2019Observed: 58.46 ft at 7:30PM Aug 22, 2019Observed: 58.48 ft at 7:45PM Aug 22, 2019Observed: 58.47 ft at 8:00PM Aug 22, 2019Observed: 58.47 ft at 8:15PM Aug 22, 2019Observed: 58.48 ft at 8:30PM Aug 22, 2019Observed: 58.48 ft at 8:45PM Aug 22, 2019Observed: 58.48 ft at 9:00PM Aug 22, 2019Highest Observation: 58.49 ft at 9:15PM Aug 22, 2019Highest Observation: 58.49 ft at 9:30PM Aug 22, 2019Highest Observation: 58.49 ft at 9:45PM Aug 22, 2019USGS--Water Resources of the United StatesPOET2(plotting HGIRG) Graph Created (10:36PM Aug 22, 2019)ObservedLatest observed value: 58.49 ft at 9:45 PM CDT 22-Aug-2019. Flood Stage is 81 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
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 West Fork San Jacinto River near Porter are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - near Conroe Upstream Gauge Downstream Gauge Downstream Gauge - near Humble
Flood Categories (in feet)
Major Flood Stage: 92
Moderate Flood Stage: 88.5
Flood Stage: 81
Action Stage: 73
Low Stage (in feet): 0

Historic Crests
(1) 94.87 ft on 08/29/2017

(P): Preliminary values subject to further review.

Recent Crests
(1) 94.87 ft on 08/29/2017

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
117 Major lowland flooding continues as homes on Old Houston Road (upstream of the gauge) begin to flood.
105.5 Major lowland flooding continues as lowest homes in Riverwalk subdivision along Serpenteer Road begin to flood.
92 Major lowland flooding begins in the vicinty of the gauge with low point on SH99 inundated.
88.5 Moderate lowland flooding begins. Lowest homes in Summer Hills subdivision along Firefly Lane and Butterfly Lane begin to flood.
83 Minor lowland flooding continues as the turnaround under SH99 at Riley Fuzzel Road begins to flood.
81 Minor lowland flooding begins in the vicinty of the gauge as water escapes the main channel. Bottom of the old gauge house and road near the old gauge house begin to flood.
About This Location Collapse

Latitude: 30.141200° N, Longitude: 95.338100° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 81 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 Not Available Not Available  

Current/Historical Observations:

Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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: 1-Mar-2019 12:34 AM
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