| 20.3 | Record stage since installation of gage. Widespread flooding of low-lying agricultural land is occurring. Some structures along and near the river are flooded. | | 20.0 | Widespread flooding of low-lying agricultural land and some structures is occurring along the South Umpqua River in the vicinity of Riddle. | | 19.0 | The South Umpqua River near Riddle is at flood stage. Widespread flooding of low-lying agricultural land and structures along the river is occurring. | | 18.0 | The South Umpqua River near Riddle is at bankfull stage. Some flooding of low land is taking place. |
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1) 20.32 ft on 12/30/2005
2) 20.09 ft on 12/09/1996
3) 19.81 ft on 01/01/1997
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Low water records are unavailable.
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