| 47.0 | The entire town of Walnut Grove is underwater. | | 33.0 | Extensive agricultural flooding with several thousand acres underwater. | | 31.5 | Several hundred acres of agricultural land is underwater. | | 27.0 | Agricultural land along the river is flooding. | | 25.0 | Agricultural land and low areas along and near the river begin to flood. |
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1) 33.00 ft on 01/17/1950
2) 32.08 ft on 04/08/2003
3) 30.20 ft on 04/14/1974
4) 30.12 ft on 02/17/1990
5) 29.90 ft on 03/06/1983
6) 29.83 ft on 03/05/1979
7) 29.80 ft on 02/23/2003
8) 29.78 ft on 02/22/1961
9) 29.77 ft on 04/14/1979
10) 29.74 ft on 11/29/1948
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1) 9.40 ft on 09/27/1978
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