West Fork San Jacinto River near Porter

Highest listed crest 94.87 ftFlood stage 81.0 ft2 crests since 2017

The West Fork San Jacinto River near Porter crested at major flood stage 1 time among the 2 crests the National Weather Service lists from 2017 to 2024. The highest, 94.87 ft on August 29, 2017, was major flooding, 13.87 feet above flood stage. 2 other gauges on the West Fork San Jacinto River crested above flood stage within a week of it, 2 at their own highest listed crest.

The gauge

Highest listed crest
94.87 ft
August 29, 2017; 131,000 cubic feet per second
Flood stage
81.0 ft
Major flooding from 92.0 ft
Crests at major
1
248th of 370 gauges in Texas
Most recent flood crest
May 4, 2024
89.10 ft, moderate flooding
Location
Montgomery County
Near Humble (11.5 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, West Fork San Jacinto River near Porter
Action stage73.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)81.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage88.51May 4, 2024Some inundation of structures and roads near the stream
Major flood stage92.01Aug 29, 2017Extensive inundation of structures and roads

Every listed crest

2 crests from 2017 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the West Fork San Jacinto River near Porter, 2017 to 2024 80859095ft Flood stage 81.0 ftMajor 92.0 ft Aug 29, 2017: 94.87 ft, major flooding; 131,000 cubic feet per secondMay 4, 2024: 89.10 ft, moderate flooding; 77,300 cubic feet per second Highest, 94.87 ft, Aug 29, 2017 20202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, West Fork San Jacinto River near Porter 2010s: 1 1 2020s: 1 2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, West Fork San Jacinto River near Porter
1Aug 29, 201794.87+13.87Major131,000
2May 4, 202489.10+8.10Moderate77,300

The worst floods along the West Fork San Jacinto River

For this gauge's highest crests, the other gauges on the West Fork San Jacinto River that crested above flood stage within a week.

August 29, 2017: 94.87 ft here, major flooding

  • ConroeTX · Aug 29, 2017 · 126.93 ft · Major · its highest
  • HumbleTX · Aug 29, 2017 · 69.18 ft · Major · its highest

May 4, 2024: 89.10 ft here, moderate flooding

  • ConroeTX · May 3, 2024 · 121.82 ft · Major
  • HumbleTX · May 4, 2024 · 58.80 ft · Major

Gauges on the West Fork San Jacinto River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the West Fork San Jacinto River
ConroeTX115.8126.93 ft, Aug 29, 201727
Porter this gaugeTX81.094.87 ft, Aug 29, 20171
HumbleTX49.369.18 ft, Aug 29, 201724

Other gauges in Montgomery County

Flood gauges in Montgomery County
Splendora17.028.19 ft, Apr 1, 194520
New Caney58.081.15 ft, Aug 29, 20178
Lake Creek above The Woodlands138.0150.99 ft, Aug 28, 20170
Splendora14.027.73 ft, Oct 8, 194916
Tomball155.0166.38 ft, Aug 28, 20173
Conroe115.8126.93 ft, Aug 29, 201727

Montgomery County: every hazard · River floods across the country · Texas

NOAA National Water Prediction Service, gauge POET2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.