| 22.0 | Flooding affects buildings in the town of St. Regis inundating roads and isolating homes. | | 21.0 | Flooding affects low lying areas adjacent to the confluence of the Clark Fork and St. Regis Rivers. | | 19.0 | Flooding affects low lying areas adjacent to the river. |
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1) 20.27 ft on 05/18/1997
2) 19.96 ft on 05/24/1948
3) 19.50 ft on 06/03/1972
4) 19.39 ft on 06/18/1974
5) 19.20 ft on 05/30/1913
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1) 2.70 ft on 02/08/1933
2) 3.25 ft on 01/04/1937
3) 3.29 ft on 02/03/1989
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