Gulf Coast Gauges

West Fork San Jacinto River near Humble water level

USGS gauge 08069500 · Harris County · San Jacinto River watershed · NWS gauge HMMT2

42.43 ft

gage height, Oct 20, 2026 at 12:15 PM CDT · 35 minutes ago

Below NWS minor flood stage
6.9 ft
NWS action stage
45.3 ft
NWS minor flood stage
49.3 ft
NWS moderate flood stage
50.3 ft
NWS major flood stage
52.3 ft
Highest since 2012 (USGS)
69.18 ft (August 29, 2017)
Usual range
42.51 to 42.91 ft

USGS marks recent readings as provisional: they can be revised after review.

No National Weather Service alert covering Harris County was active when this page was generated (Oct 20, 2026 at 12:50 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.

Last 7 days

42.4 42.6 42.9 Oct 14 Oct 15 Oct 16 Oct 17 Oct 18 Oct 19 Oct 20

Hourly averages of USGS readings. The shaded band is this gauge's usual range: the middle 80% of its readings since September 11, 2026.

How to read this gauge

Gage height is the height of the water surface above the gauge's zero point. This gauge's zero is set at 0 ft NAVD88, so its gage height is the water surface elevation above that datum. It is not a water depth.

The flood stages are the National Weather Service's, on the same scale as the gage height; they are the NWS's references for this location, not estimates made here.

Daily highs and lows since September 11, 2026

42.4 43.2 44.0 2026-09-11 – 2026-10-20 · bars are daily low to high

Annual peaks since 1929

In 15 complete water years of comparable USGS records (since 2012), the highest peak was 69.18 ft on August 29, 2017. So far in water year 2027 (since October 1) the highest reading is 43.99 ft on October 3, 2026.

1 20 38 56 74 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 major 52.3 ft moderate 50.3 ft minor 49.3 ft action 45.3 ft Water year 1929: 32.70 ft on May 31, 1929 (different datum or site: not compared) Water year 1930: 12.10 ft on February 5, 1930 (different datum or site: not compared) Water year 1931: 10.58 ft on December 8, 1930 (different datum or site: not compared) Water year 1932: 14.82 ft on February 23, 1932 (different datum or site: not compared) Water year 1933: 10.40 ft on March 9, 1933 (different datum or site: not compared) Water year 1934: 17.50 ft on March 4, 1934 (different datum or site: not compared) Water year 1935: 27.26 ft on May 7, 1935 (different datum or site: not compared) Water year 1936: 23.74 ft on December 9, 1935 (different datum or site: not compared) Water year 1937: 9.40 ft on March 15, 1937 (different datum or site: not compared) Water year 1938: 12.00 ft on May 19, 1938 (different datum or site: not compared) Water year 1939: 11.40 ft on March 1, 1939 (different datum or site: not compared) Water year 1940: 13.87 ft on June 13, 1940 (different datum or site: not compared) Water year 1941: 32.70 ft on November 26, 1940 (different datum or site: not compared) Water year 1942: 16.16 ft on April 10, 1942 (different datum or site: not compared) Water year 1943: 13.30 ft on July 31, 1943 (different datum or site: not compared) Water year 1944: 12.98 ft on March 20, 1944 (different datum or site: not compared) Water year 1945: 22.65 ft on August 31, 1945 (different datum or site: not compared) Water year 1946: 15.31 ft on May 21, 1946 (different datum or site: not compared) Water year 1947: 21.21 ft on November 7, 1946 (different datum or site: not compared) Water year 1948: 9.27 ft on March 3, 1948 (different datum or site: not compared) Water year 1949: 12.58 ft on March 1, 1949 (different datum or site: not compared) Water year 1950: 21.29 ft on October 8, 1949 (different datum or site: not compared) Water year 1951: 6.40 ft on March 29, 1951 (different datum or site: not compared) Water year 1952: 11.46 ft on April 12, 1952 (different datum or site: not compared) Water year 1953: 15.11 ft on May 19, 1953 (different datum or site: not compared) Water year 1954: 14.00 ft on July 30, 1954 (different datum or site: not compared) Water year 2011: 43.26 ft on January 24, 2011 (different datum or site: not compared) Water year 2012: 52.09 ft on July 14, 2012 Water year 2013: 44.95 ft on January 10, 2013 Water year 2014: 49.92 ft on May 28, 2014 Water year 2015: 53.65 ft on May 29, 2015 Water year 2016: 61.95 ft on May 29, 2016 Water year 2017: 69.18 ft on August 29, 2017 Water year 2018: 51.63 ft on March 29, 2018 Water year 2019: 55.41 ft on September 19, 2019 Water year 2020: 46.63 ft on September 23, 2020 Water year 2021: 49.73 ft on May 3, 2021 Water year 2022: 44.67 ft on October 2, 2021 Water year 2023: 50.96 ft on May 16, 2023 Water year 2024: 58.80 ft on May 4, 2024 Water year 2025: 47.31 ft on June 16, 2025 Water year 2026: 46.78 ft on May 2, 2026 Water year 2027 so far: 43.99 ft on October 3, 2026 2017 2024

Each dot is the highest gage height of a water year (October to September), from the USGS annual peak record, with recent years USGS has not published yet taken from its 15-minute readings and this site's own; hover a dot for its date. Dashed lines are NWS flood stages. Grey hollow dots (27 years) were measured on a different datum or at a different site, or before the gauge's datum last changed, so they are shown but not compared.

NWS historic crests

DateCrestAbove minor flood stage
August 29, 201769.18 ft19.9 ft
October 20, 199466.39 ft17.1 ft
November 26, 194063.23 ft13.9 ft
May 31, 192963.23 ft13.9 ft
May 29, 201661.95 ft12.7 ft
November 15, 199860.13 ft10.8 ft
May 4, 202458.80 ft9.5 ft
May 7, 193557.79 ft8.5 ft

The highest crests the National Weather Service lists for this gauge, as published. They can differ from the USGS annual peaks above: USGS records the year's highest gage height, which is not always the crest the NWS lists for the same flood.

In past storms

StormPeakPeak timeRiseCompared with its record
October 1–2, 202643.99 ftOct 3, 2026 at 11:15 AM CDT1.4 fthighest since water year 2026 (46.78 ft on May 2, 2026)

Harris County gauge nearby

San Jacinto River at US 59, less than 0.1 mi away, read 42.45 ft at Oct 20, 2026 at 11:04 AM CDT, 6.8 ft below its top of bank. Both gauges report water surface elevation.

Download the readings

west-fork-san-jacinto-river-near-humble.csv (CSV): every reading stored for this gauge since September 11, 2026, 930 rows, with time in UTC and Central, gage height in feet, and the USGS approval status.

Source. Gage height from the U.S. Geological Survey; flood stages and historic crests from the NWS National Water Prediction Service. This site is not affiliated with either agency.