Gulf Coast Gauges

San Bernard River near Boling water level

USGS gauge 08117500 · Fort Bend County · NWS gauge BOLT2

3.64 ft

gage height, Oct 23, 2026 at 2:15 PM CDT · 35 minutes ago

Below NWS minor flood stage
14.4 ft
NWS action stage
14.0 ft
NWS minor flood stage
18.0 ft
NWS moderate flood stage
22.0 ft
NWS major flood stage
32.0 ft
Highest since 1955 (USGS)
43.79 ft (August 31, 2017)
Usual range
2.56 to 9.93 ft

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

No National Weather Service alert covering Fort Bend County was active when this page was generated (Oct 23, 2026 at 2:50 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.

Last 7 days

2.6 6.2 9.9 Oct 17 Oct 18 Oct 19 Oct 20 Oct 21 Oct 22 Oct 23

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 this gauge's own zero point, which sits at 30.81 ft NGVD29. It is not a water depth and not an elevation: add 30.81 ft to get the water surface elevation.

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

2.3 7.0 11.6 2026-09-11 – 2026-10-23 · bars are daily low to high

Annual peaks since 1955

In 72 complete water years of comparable USGS records (since 1955), the highest peak was 43.79 ft on August 31, 2017. So far in water year 2027 (since October 1) the highest reading is 11.62 ft on October 4, 2026.

9 18 28 37 46 1960 1970 1980 1990 2000 2010 2020 major 32 ft moderate 22 ft minor 18 ft action 14 ft Water year 1955: 21.55 ft on February 9, 1955 Water year 1956: 13.84 ft on January 22, 1956 Water year 1957: 30.45 ft on March 21, 1957 Water year 1958: 40.50 ft on October 18, 1957 Water year 1959: 31.29 ft on April 14, 1959 Water year 1960: 42.41 ft on June 28, 1960 Water year 1961: 36.79 ft on September 15, 1961 Water year 1962: 19.43 ft on November 17, 1961 Water year 1963: 16.38 ft on January 19, 1963 Water year 1964: 19.63 ft on March 3, 1964 Water year 1965: 20.52 ft on January 23, 1965 Water year 1966: 21.58 ft on November 12, 1965 Water year 1967: 19.96 ft on September 22, 1967 Water year 1968: 36.75 ft on June 27, 1968 Water year 1969: 32.05 ft on February 24, 1969 Water year 1970: 20.15 ft on March 11, 1970 Water year 1971: 31.76 ft on October 13, 1970 Water year 1972: 35.14 ft on May 14, 1972 Water year 1973: 41.87 ft on June 16, 1973 Water year 1974: 29.60 ft on October 13, 1973 Water year 1975: 37.70 ft on May 31, 1975 Water year 1976: 21.14 ft on June 5, 1976 Water year 1977: 20.91 ft on December 15, 1976 Water year 1978: 21.61 ft on September 17, 1978 Water year 1979: 38.81 ft on September 22, 1979 Water year 1980: 25.62 ft on January 22, 1980 Water year 1981: 21.28 ft on September 1, 1981 Water year 1982: 25.71 ft on May 14, 1982 Water year 1983: 27.13 ft on September 20, 1983 Water year 1984: 35.83 ft on October 17, 1983 Water year 1985: 29.70 ft on October 26, 1984 Water year 1986: 41.52 ft on November 14, 1985 Water year 1987: 27.64 ft on June 15, 1987 Water year 1988: 21.37 ft on December 22, 1987 Water year 1989: 19.51 ft on August 5, 1989 Water year 1990: 19.07 ft on February 22, 1990 Water year 1991: 30.27 ft on April 6, 1991 Water year 1992: 30.19 ft on December 22, 1991 Water year 1993: 40.76 ft on June 25, 1993 Water year 1994: 25.48 ft on May 19, 1994 Water year 1995: 41.44 ft on October 21, 1994 Water year 1996: 24.11 ft on December 18, 1995 Water year 1997: 30.96 ft on April 12, 1997 Water year 1998: 29.84 ft on October 14, 1997 Water year 1999: 42.61 ft on October 21, 1998 Water year 2000: 22.81 ft on May 20, 2000 Water year 2001: 33.03 ft on September 1, 2001 Water year 2002: 28.79 ft on July 16, 2002 Water year 2003: 35.95 ft on November 7, 2002 Water year 2004: 30.41 ft on November 18, 2003 Water year 2005: 39.75 ft on November 26, 2004 Water year 2006: 18.57 ft on July 7, 2006 Water year 2007: 30.53 ft on October 17, 2006 Water year 2008: 20.51 ft on January 19, 2008 Water year 2009: 31.01 ft on April 19, 2009 Water year 2010: 19.51 ft on July 3, 2010 Water year 2011: 13.77 ft on December 30, 2010 Water year 2012: 20.49 ft on February 19, 2012 Water year 2013: 18.05 ft on January 10, 2013 Water year 2014: 31.10 ft on May 30, 2014 Water year 2015: 31.50 ft on June 21, 2015 Water year 2016: 35.54 ft on April 22, 2016 Water year 2017: 43.79 ft on August 31, 2017 Water year 2018: 16.36 ft on February 10, 2018 Water year 2019: 39.47 ft on June 7, 2019 Water year 2020: 21.42 ft on September 23, 2020 Water year 2021: 33.72 ft on May 2, 2021 Water year 2022: 14.99 ft on August 30, 2022 Water year 2023: 25.26 ft on May 18, 2023 Water year 2024: 24.24 ft on January 28, 2024 Water year 2025: 23.90 ft on June 13, 2025 Water year 2026: 19.06 ft on June 16, 2026 Water year 2027 so far: 11.62 ft on October 4, 2026 2017 1999 1960

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.

NWS historic crests

DateCrestAbove minor flood stage
August 31, 201743.79 ft25.8 ft
October 21, 199842.61 ft24.6 ft
June 28, 196042.41 ft24.4 ft
June 16, 197341.87 ft23.9 ft
November 14, 198541.52 ft23.5 ft
October 20, 199441.44 ft23.4 ft
June 24, 199340.76 ft22.8 ft
October 18, 195740.50 ft22.5 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, 202611.61 ftOct 4, 2026 at 6:30 PM CDT9.2 fthighest since water year 2026 (19.06 ft on June 16, 2026)

Download the readings

san-bernard-river-near-boling.csv (CSV): every reading stored for this gauge since September 11, 2026, 4,026 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.