Rivers in Texas

San Bernard River near Old Ocean

Brazoria County, TexasNWS OCNT2USGS 08117705Dickinson office

Below flood stage
0.74ftStage

Observed Mon, Sep 21, 10:45 PM CDT

Flood stage
7.00 ft
Record crest
30.16 ft2017

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood16.00 ft
Moderate flood11.00 ft
Minor flood7.00 ft
Action5.00 ft
  1. 25.50 ftFM 521 begins to flood.
  2. 25.00 ftLowest homes along CR 747A begin to flood. Reifels Feed Store is threatened. Graham Road and Kaufman Road become threatened.
  3. 24.00 ftLow spots on HWY 35 become threatened. Low spots on Cypress Crest Street begin to take on water.
  4. 23.00 ftFM 522 West and CR 747A become threatened.
  5. 22.00 ftFM 522 East and Gupton Road become threatened.
  6. 21.00 ftAllhands Drive becomes threatened.
  7. 20.50 ftLowest homes along CR 244A being to flood.
  8. 20.00 ftWindsor Road, CR 797 and Post Oak Court become threatened.
  9. 19.50 ftLowest homes along CR 506 north of FM 521 begin to flood. CR 244A becomes threatened.
  10. 19.00 ftHomes along CR 506 north of FM 521 are threatened. River Drive, Riverbend Road, and CR 945 become threatened.
  11. 18.00 ftWater is over the road at the entrance of the Phillips Terminal. Water is over the top of the dock at the Phillips Terminal near Sweeny with all vessel traffic stopped. Widespread inundation of the left floodplain occurs. Hook Road becomes threatened.
  12. 17.00 ftLow spots on CR 506 begin to flood.
  13. 16.00 ftWater begins inundating the boat ramp off of FM 521. Pan American Road and Riverglen Street become threatened.
  14. 13.00 ftWater is within 5 feet of the top of the dock at the Phillips Terminal near Sweeny. Tugs can not push barges upstream and are unable to dock and there is widespread inundation of the floodplain.
  15. 11.00 ftLazy G RV Park becomes threatened.
  16. 10.00 ftWater begins spilling into the left floodplain. Water is over the mid level walkway at the Phillips Terminal near Sweeny.
  17. 9.00 ftWater is over the mid level walkway at the Phillips Terminal near Sweeny.
  18. 7.50 ftLazy G RV Boat Ramp takes on water.
  19. 7.00 ftWater is over the lowest platform at the Phillips Terminal near Sweeny. Hanson Park begins to flood.
  20. 5.00 ftPrivate boat ramps begin taking on water.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding21%
Moderate flooding11%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Crest history

11 crests on NOAA’s list since 2017.

#DateStage
1September 2, 201730.16 ft
2June 7, 201920.35 ft
3May 12, 201915.82 ft
4July 11, 202115.36 ft
5July 29, 202412.72 ft
6June 5, 202111.30 ft
7December 9, 201810.66 ft
8July 8, 202410.10 ft
9January 4, 20219.78 ft
10February 28, 20199.35 ft
11December 14, 20187.36 ft

Most recent crests

  • July 29, 2024: 12.72 ft
  • July 8, 2024: 10.10 ft
  • July 11, 2021: 15.36 ft
  • June 5, 2021: 11.30 ft
  • January 4, 2021: 9.78 ft
  • June 7, 2019: 20.35 ft
  • May 12, 2019: 15.82 ft
  • February 28, 2019: 9.35 ft
  • December 14, 2018: 7.36 ft
  • December 9, 2018: 10.66 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the West Gulf River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. 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.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.