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Weather Forecast Office Houston/Galveston, TX West Gulf River Forecast Center

Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels
Chance of Exceeding Levels
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San Bernard River near Sweeny Observed crest: 12.6 ft at 8:00am Nov 21 Observed: 11 ft at 8:00am Nov 19 Observed: 12.3 ft at 8:00am Nov 20 Observed: 12.6 ft at 8:00am Nov 21 Observed: 11.9 ft at 8:00am Nov 22 Observed: 11.5 ft at 8:00am Nov 23 Graph Created (1:20am Nov 24, 2009) Observed SWYT2 (plotting HGIRZ)   Gage 0  Datum: n/a Latest observed value: 11.5 ft at 8:00 AM CST 23-Nov-2009. Flood Stage is 16.0 ft.   Stage (ft) Flow (kcfs)
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NOTE: Forecasts for the San Bernard River near Sweeny are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - near Boling Upstream Gauge

Flood Categories (in feet)
Major Flood Stage:20
Moderate Flood Stage:17
Flood Stage:16
Action Stage:12

Historical Crests
(1) 23.90 ft on 10/23/1998
(2) 23.60 ft on 09/11/1998
(3) 23.50 ft on 06/02/2001
(4) 22.40 ft on 11/18/2004
(5) 21.80 ft on 11/19/1998
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Low Water Records
Currently none available.

San Bernard River near Sweeny location map

Flood Impacts Collapse
25.0 At levels near 25 feet water is over the top of the dock at the Phillips Terminal near Sweeny with all vessel traffic stopped. Widespread inundation of the left flood plain occurs.
20.0 At levels near 20 feet major lowland flooding begins. Water 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 innundation onf the flood plain.
17.0 At levels near 17 feet moderate lowland flooding begins. Water is over the mid level walkway at the Phillips Terminal near Sweeny. Barges can not push barges upstream and are unable to dock. Water begins spilling into the left flood plain.
16.0 At levels near 16 feet minor lowland flooding begins. Water is over the mid level walkway at the Phillips Terminal near Sweeny and tugs can not push barges upstream and are unable to dock.
14.0 Water is over the lowest platform at the Phillips Terminal near Sweeny. Shipping barges moving up the San Bernard River must fight the current and docking maneuvers are affected.
13.0 Water start spilling over the right bank and covers the lowest platform at the dock just upstream from the gage.
12.0 Caution stage, a strong north wind can cause barges scrape bottom.

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Other Data Sources:
Corps of Engineers (COE) Info for Sweeny

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Houston/Galveston Weather Forecast Office
1353 FM 646, Suite 202
Dickinson, TX 77539
(281) 337-5074
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Page last modified: 3-Jul-2008 2:17 PM
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