Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip
        
Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
     Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Web Portal Changes:

  • AHPS - water.weather.gov- Scheduled operations ends on Tuesday, May 28th, 2024
  • Please see water.noaa.gov/.  Bookmark it NOW!  The pages will automatically redirect to water.noaa.gov until May 28, 2025.
  • To go to a specific gauge location  - use water.noaa.gov/gauges/NWSLI - where NWSLI is the five character ID of your favorite location.
  • Other Important URL changes - Service Change Notice 24-29 

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
West Fork San Jacinto River near Porter Stage (ft)Flow (kcfs)Observed: 61.07 ft at 4:30PM May 13, 2024Observed: 61.07 ft at 4:45PM May 13, 2024Observed: 61.1 ft at 5:00PM May 13, 2024Observed: 61.11 ft at 5:15PM May 13, 2024Observed: 61.12 ft at 5:30PM May 13, 2024Observed: 61.16 ft at 5:45PM May 13, 2024Observed: 61.15 ft at 6:00PM May 13, 2024Observed: 61.17 ft at 6:15PM May 13, 2024Observed: 61.18 ft at 6:30PM May 13, 2024Observed: 61.2 ft at 6:45PM May 13, 2024Observed: 61.21 ft at 7:00PM May 13, 2024Observed: 61.21 ft at 7:15PM May 13, 2024Observed: 61.22 ft at 7:30PM May 13, 2024Observed: 61.22 ft at 7:45PM May 13, 2024Observed: 61.22 ft at 8:00PM May 13, 2024Observed: 61.24 ft at 8:15PM May 13, 2024Observed: 61.25 ft at 8:30PM May 13, 2024Observed: 61.27 ft at 8:45PM May 13, 2024Observed: 61.27 ft at 9:00PM May 13, 2024Observed: 61.29 ft at 9:15PM May 13, 2024Observed: 61.31 ft at 9:30PM May 13, 2024Observed: 61.31 ft at 9:45PM May 13, 2024Observed: 61.34 ft at 10:00PM May 13, 2024Observed: 61.35 ft at 10:15PM May 13, 2024Observed: 61.38 ft at 10:30PM May 13, 2024Observed: 61.39 ft at 10:45PM May 13, 2024Observed: 61.42 ft at 11:00PM May 13, 2024Observed: 61.45 ft at 11:15PM May 13, 2024Observed: 61.47 ft at 11:30PM May 13, 2024Observed: 61.5 ft at 11:45PM May 13, 2024Observed: 61.51 ft at 12:00AM May 14, 2024Observed: 61.55 ft at 12:15AM May 14, 2024Observed: 61.59 ft at 12:30AM May 14, 2024Observed: 61.62 ft at 12:45AM May 14, 2024Observed: 61.64 ft at 1:00AM May 14, 2024Observed: 61.67 ft at 1:15AM May 14, 2024Observed: 61.71 ft at 1:30AM May 14, 2024Observed: 61.74 ft at 1:45AM May 14, 2024Observed: 61.77 ft at 2:00AM May 14, 2024Observed: 61.79 ft at 2:15AM May 14, 2024Observed: 61.8 ft at 2:30AM May 14, 2024Observed: 61.8 ft at 2:45AM May 14, 2024Observed: 61.84 ft at 3:00AM May 14, 2024Observed: 61.86 ft at 3:15AM May 14, 2024Observed: 61.88 ft at 3:30AM May 14, 2024Observed: 61.89 ft at 3:45AM May 14, 2024Observed: 61.89 ft at 4:00AM May 14, 2024Observed: 61.89 ft at 4:15AM May 14, 2024Observed: 61.89 ft at 4:30AM May 14, 2024Observed: 61.89 ft at 4:45AM May 14, 2024Observed: 61.89 ft at 5:00AM May 14, 2024Observed: 61.9 ft at 5:15AM May 14, 2024Observed: 61.9 ft at 5:30AM May 14, 2024Observed: 61.88 ft at 5:45AM May 14, 2024Highest Observation: 61.91 ft at 6:00AM May 14, 2024Observed: 61.9 ft at 6:15AM May 14, 2024Observed: 61.89 ft at 6:30AM May 14, 2024Observed: 61.87 ft at 6:45AM May 14, 2024Observed: 61.87 ft at 7:00AM May 14, 2024Observed: 61.85 ft at 7:15AM May 14, 2024Observed: 61.85 ft at 7:30AM May 14, 2024Observed: 61.85 ft at 7:45AM May 14, 2024Observed: 61.85 ft at 8:00AM May 14, 2024Observed: 61.84 ft at 8:15AM May 14, 2024Observed: 61.84 ft at 8:30AM May 14, 2024Observed: 61.82 ft at 8:45AM May 14, 2024Observed: 61.81 ft at 9:00AM May 14, 2024Observed: 61.79 ft at 9:15AM May 14, 2024Observed: 61.8 ft at 9:30AM May 14, 2024Observed: 61.77 ft at 9:45AM May 14, 2024Observed: 61.73 ft at 10:00AM May 14, 2024Observed: 61.74 ft at 10:15AM May 14, 2024Observed: 61.73 ft at 10:30AM May 14, 2024Observed: 61.73 ft at 10:45AM May 14, 2024Observed: 61.72 ft at 11:00AM May 14, 2024Observed: 61.68 ft at 11:15AM May 14, 2024Observed: 61.69 ft at 11:30AM May 14, 2024Observed: 61.65 ft at 11:45AM May 14, 2024Observed: 61.66 ft at 12:00PM May 14, 2024Observed: 61.64 ft at 12:15PM May 14, 2024Observed: 61.64 ft at 12:30PM May 14, 2024Observed: 61.61 ft at 12:45PM May 14, 2024Observed: 61.6 ft at 1:00PM May 14, 2024Observed: 61.58 ft at 1:15PM May 14, 2024Observed: 61.56 ft at 1:30PM May 14, 2024Observed: 61.57 ft at 1:45PM May 14, 2024Observed: 61.58 ft at 2:00PM May 14, 2024Observed: 61.55 ft at 2:15PM May 14, 2024Observed: 61.56 ft at 2:30PM May 14, 2024Observed: 61.56 ft at 2:45PM May 14, 2024Observed: 61.53 ft at 3:00PM May 14, 2024Observed: 61.53 ft at 3:15PM May 14, 2024Observed: 61.54 ft at 3:30PM May 14, 2024Observed: 61.52 ft at 3:45PM May 14, 2024Observed: 61.52 ft at 4:00PM May 14, 2024Observed: 61.52 ft at 4:15PM May 14, 2024Observed: 61.52 ft at 4:30PM May 14, 2024Observed: 61.51 ft at 4:45PM May 14, 2024Observed: 61.51 ft at 5:00PM May 14, 2024Observed: 61.49 ft at 5:15PM May 14, 2024Observed: 61.51 ft at 5:30PM May 14, 2024Observed: 61.5 ft at 5:45PM May 14, 2024Observed: 61.47 ft at 6:00PM May 14, 2024Observed: 61.5 ft at 6:15PM May 14, 2024Observed: 61.48 ft at 6:30PM May 14, 2024Observed: 61.5 ft at 6:45PM May 14, 2024Observed: 61.48 ft at 7:00PM May 14, 2024Observed: 61.5 ft at 7:15PM May 14, 2024Observed: 61.49 ft at 7:30PM May 14, 2024Observed: 61.49 ft at 7:45PM May 14, 2024Observed: 61.5 ft at 8:00PM May 14, 2024Observed: 61.48 ft at 8:15PM May 14, 2024Observed: 61.48 ft at 8:30PM May 14, 2024Observed: 61.48 ft at 8:45PM May 14, 2024Observed: 61.49 ft at 9:00PM May 14, 2024Observed: 61.49 ft at 9:15PM May 14, 2024Observed: 61.5 ft at 9:30PM May 14, 2024Observed: 61.5 ft at 9:45PM May 14, 2024Observed: 61.52 ft at 10:00PM May 14, 2024Observed: 61.51 ft at 10:15PM May 14, 2024Observed: 61.53 ft at 10:30PM May 14, 2024Observed: 61.52 ft at 10:45PM May 14, 2024Observed: 61.52 ft at 11:00PM May 14, 2024Observed: 61.52 ft at 11:15PM May 14, 2024Observed: 61.51 ft at 11:30PM May 14, 2024Observed: 61.52 ft at 11:45PM May 14, 2024Observed: 61.52 ft at 12:00AM May 15, 2024Observed: 61.52 ft at 12:15AM May 15, 2024Observed: 61.54 ft at 12:30AM May 15, 2024Observed: 61.54 ft at 12:45AM May 15, 2024Observed: 61.55 ft at 1:00AM May 15, 2024Observed: 61.55 ft at 1:15AM May 15, 2024Observed: 61.54 ft at 1:30AM May 15, 2024Observed: 61.57 ft at 1:45AM May 15, 2024Observed: 61.56 ft at 2:00AM May 15, 2024Observed: 61.57 ft at 2:15AM May 15, 2024Observed: 61.58 ft at 2:30AM May 15, 2024Observed: 61.57 ft at 2:45AM May 15, 2024Observed: 61.56 ft at 3:00AM May 15, 2024Observed: 61.58 ft at 3:15AM May 15, 2024Observed: 61.57 ft at 3:30AM May 15, 2024Observed: 61.58 ft at 3:45AM May 15, 2024Observed: 61.57 ft at 4:00AM May 15, 2024Observed: 61.57 ft at 4:15AM May 15, 2024Observed: 61.58 ft at 4:30AM May 15, 2024Observed: 61.6 ft at 4:45AM May 15, 2024Observed: 61.61 ft at 5:00AM May 15, 2024Observed: 61.59 ft at 5:15AM May 15, 2024Observed: 61.62 ft at 5:30AM May 15, 2024Observed: 61.61 ft at 5:45AM May 15, 2024Observed: 61.62 ft at 6:00AM May 15, 2024Observed: 61.65 ft at 6:15AM May 15, 2024Observed: 61.64 ft at 6:30AM May 15, 2024Observed: 61.65 ft at 6:45AM May 15, 2024Observed: 61.65 ft at 7:00AM May 15, 2024Observed: 61.65 ft at 7:15AM May 15, 2024Observed: 61.64 ft at 7:30AM May 15, 2024Observed: 61.64 ft at 7:45AM May 15, 2024Observed: 61.65 ft at 8:00AM May 15, 2024Observed: 61.64 ft at 8:15AM May 15, 2024Observed: 61.64 ft at 8:30AM May 15, 2024Observed: 61.64 ft at 8:45AM May 15, 2024Observed: 61.66 ft at 9:00AM May 15, 2024Observed: 61.66 ft at 9:15AM May 15, 2024Observed: 61.66 ft at 9:30AM May 15, 2024Observed: 61.68 ft at 9:45AM May 15, 2024Observed: 61.68 ft at 10:00AM May 15, 2024Observed: 61.67 ft at 10:15AM May 15, 2024Observed: 61.68 ft at 10:30AM May 15, 2024Observed: 61.68 ft at 10:45AM May 15, 2024Observed: 61.67 ft at 11:00AM May 15, 2024Observed: 61.69 ft at 11:15AM May 15, 2024Observed: 61.67 ft at 11:30AM May 15, 2024Observed: 61.68 ft at 11:45AM May 15, 2024Observed: 61.68 ft at 12:00PM May 15, 2024Observed: 61.68 ft at 12:15PM May 15, 2024Observed: 61.68 ft at 12:30PM May 15, 2024Observed: 61.69 ft at 12:45PM May 15, 2024Observed: 61.68 ft at 1:00PM May 15, 2024Observed: 61.68 ft at 1:15PM May 15, 2024Observed: 61.68 ft at 1:30PM May 15, 2024Observed: 61.69 ft at 1:45PM May 15, 2024Observed: 61.68 ft at 2:00PM May 15, 2024Observed: 61.69 ft at 2:15PM May 15, 2024Observed: 61.68 ft at 2:30PM May 15, 2024Observed: 61.68 ft at 2:45PM May 15, 2024Observed: 61.68 ft at 3:00PM May 15, 2024Observed: 61.67 ft at 3:15PM May 15, 2024Observed: 61.68 ft at 3:30PM May 15, 2024Observed: 61.66 ft at 3:45PM May 15, 2024Observed: 61.67 ft at 4:00PM May 15, 2024Observed: 61.67 ft at 4:15PM May 15, 2024Observed: 61.67 ft at 4:30PM May 15, 2024Observed: 61.69 ft at 4:45PM May 15, 2024Observed: 61.68 ft at 5:00PM May 15, 2024Observed: 61.68 ft at 5:15PM May 15, 2024Observed: 61.66 ft at 5:30PM May 15, 2024Observed: 61.66 ft at 5:45PM May 15, 2024Observed: 61.64 ft at 6:00PM May 15, 2024Observed: 61.65 ft at 6:15PM May 15, 2024Observed: 61.65 ft at 6:30PM May 15, 2024Observed: 61.67 ft at 6:45PM May 15, 2024Observed: 61.67 ft at 7:00PM May 15, 2024Observed: 61.67 ft at 7:15PM May 15, 2024Observed: 61.68 ft at 7:30PM May 15, 2024Observed: 61.68 ft at 7:45PM May 15, 2024Observed: 61.68 ft at 8:00PM May 15, 2024Observed: 61.69 ft at 8:15PM May 15, 2024Observed: 61.67 ft at 8:30PM May 15, 2024Observed: 61.69 ft at 8:45PM May 15, 2024Observed: 61.67 ft at 9:00PM May 15, 2024Observed: 61.66 ft at 9:15PM May 15, 2024Observed: 61.64 ft at 9:30PM May 15, 2024Observed: 61.65 ft at 9:45PM May 15, 2024Observed: 61.67 ft at 10:00PM May 15, 2024Observed: 61.68 ft at 10:15PM May 15, 2024Observed: 61.66 ft at 10:30PM May 15, 2024Observed: 61.66 ft at 10:45PM May 15, 2024Observed: 61.64 ft at 11:00PM May 15, 2024Observed: 61.65 ft at 11:15PM May 15, 2024Observed: 61.64 ft at 11:30PM May 15, 2024Observed: 61.63 ft at 11:45PM May 15, 2024Observed: 61.66 ft at 12:00AM May 16, 2024Observed: 61.65 ft at 12:15AM May 16, 2024Observed: 61.64 ft at 12:30AM May 16, 2024Observed: 61.63 ft at 12:45AM May 16, 2024Observed: 61.66 ft at 1:00AM May 16, 2024Observed: 61.64 ft at 1:15AM May 16, 2024Observed: 61.63 ft at 1:30AM May 16, 2024Observed: 61.65 ft at 1:45AM May 16, 2024Observed: 61.64 ft at 2:00AM May 16, 2024Observed: 61.65 ft at 2:15AM May 16, 2024Observed: 61.63 ft at 2:30AM May 16, 2024Observed: 61.65 ft at 2:45AM May 16, 2024Observed: 61.63 ft at 3:00AM May 16, 2024Observed: 61.64 ft at 3:15AM May 16, 2024Observed: 61.64 ft at 3:30AM May 16, 2024Observed: 61.64 ft at 3:45AM May 16, 2024Observed: 61.66 ft at 4:00AM May 16, 2024Observed: 61.65 ft at 4:15AM May 16, 2024Observed: 61.65 ft at 4:30AM May 16, 2024Observed: 61.66 ft at 4:45AM May 16, 2024Observed: 61.65 ft at 5:00AM May 16, 2024Observed: 61.64 ft at 5:15AM May 16, 2024Observed: 61.65 ft at 5:30AM May 16, 2024Observed: 61.67 ft at 5:45AM May 16, 2024Observed: 61.64 ft at 6:00AM May 16, 2024Observed: 61.65 ft at 6:15AM May 16, 2024Observed: 61.67 ft at 6:30AM May 16, 2024Observed: 61.68 ft at 6:45AM May 16, 2024Observed: 61.68 ft at 7:00AM May 16, 2024Observed: 61.7 ft at 7:15AM May 16, 2024Observed: 61.7 ft at 7:30AM May 16, 2024Observed: 61.7 ft at 7:45AM May 16, 2024Observed: 61.68 ft at 8:00AM May 16, 2024Observed: 61.7 ft at 8:15AM May 16, 2024Observed: 61.69 ft at 8:30AM May 16, 2024Observed: 61.73 ft at 8:45AM May 16, 2024Observed: 61.72 ft at 9:00AM May 16, 2024Observed: 61.74 ft at 9:15AM May 16, 2024Observed: 61.73 ft at 9:30AM May 16, 2024Observed: 61.72 ft at 9:45AM May 16, 2024Observed: 61.72 ft at 10:00AM May 16, 2024Observed: 61.72 ft at 10:15AM May 16, 2024Observed: 61.73 ft at 10:30AM May 16, 2024Observed: 61.74 ft at 10:45AM May 16, 2024Observed: 61.74 ft at 11:00AM May 16, 2024Observed: 61.72 ft at 11:15AM May 16, 2024Observed: 61.77 ft at 11:30AM May 16, 2024Observed: 61.77 ft at 11:45AM May 16, 2024Observed: 61.76 ft at 12:00PM May 16, 2024Observed: 61.74 ft at 12:15PM May 16, 2024Observed: 61.79 ft at 12:30PM May 16, 2024Observed: 61.8 ft at 12:45PM May 16, 2024Observed: 61.8 ft at 1:00PM May 16, 2024Observed: 61.79 ft at 1:15PM May 16, 2024Observed: 61.83 ft at 1:30PM May 16, 2024Observed: 61.83 ft at 1:45PM May 16, 2024Observed: 61.83 ft at 2:00PM May 16, 2024Observed: 61.83 ft at 2:15PM May 16, 2024Observed: 61.83 ft at 2:30PM May 16, 2024Observed: 61.84 ft at 2:45PM May 16, 2024Observed: 61.84 ft at 3:00PM May 16, 2024Observed: 61.85 ft at 3:15PM May 16, 2024Observed: 61.84 ft at 3:30PM May 16, 2024Observed: 61.85 ft at 3:45PM May 16, 2024USGS--Water Resources of the United StatesPOET2(plotting HGIRG) Graph Created (4:22PM May 16, 2024)ObservedLatest observed value: 61.85 ft at 3:45 PM CDT 16-May-2024. 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.

Return to Area Map
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities