| 20.0 | Major lowland flooding begins with massive inundation of the flood plain as the river is close to 2 miles wide. OSR become inundated one half mile on the right bank and 1.5 miles on the left bank. | | 18.0 | Moderate lowland flooding begins as three channels merge into one below State Highway 21. There is widespread inundation of the flood plain in the vicinity of the gage with the river more than 1.5 miles wide. Long Trussel Road in northeast Brazos County below State Highway 21 becomes inundated. | | 17.0 | There is widespread inundation of the flood plain in the vicinity of the gage with the river more than 1 mile wide. Long trussel road in northeast Brazos County below State Highway 21 is threatened. | | 15.0 | Minor lowland flooding begins as water escapes the main channel and inundates the flood plain. |
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1) 22.67 ft on 05/01/2009
2) 20.56 ft on 01/31/1999
3) 20.25 ft on 12/30/2000
4) 19.23 ft on 12/19/2001
5) 19.13 ft on 05/05/2007
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Low water records are unavailable.
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