| 20.8 | water is flowing over the highway 135 bridge and the levee system is over topped causing widespread flooding | | 18.0 | water reaches the underclearance of the highway 135 bridge | | 14.0 | widespread flooding is occurring. Some evacuations may be necessary. Several roads between Rivervale and the Big Lake Wild Life Refuge are flooded | | 13.0 | several thousand acres of unprotected crop land is flooded and several roads inside the levee system are covered by flood water | | 12.0 | evacuations may be necessary for some areas inside the main levee system due to access problems. Agriculture flooding is widespread | | 11.0 | farmland north of Rivervale is flooded. Low lying portions of highway 158 near the river are flooded | | 10.0 | unprotected farmland near the river is flooded between Rivervale and the Big Lake Wildlife Refuge | | 8.0 | flooding is occurring inside the levee system. Equipment and livestock may need to be moved |
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1) 13.87 ft on 02/20/1989
2) 13.57 ft on 01/19/1950
3) 13.55 ft on 11/23/1957
4) 13.31 ft on 04/25/1973
5) 13.28 ft on 04/06/1979
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1) 1.43 ft on 10/12/1994
2) 1.45 ft on 09/02/1988
3) 1.50 ft on 11/12/1982
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