| 75.0 | EXTREME FLOODING OCCURS...WITH THE WEST SIDE LEVEES NEAR THE COLUMBIA LOCK AND DAM IN DANGER OF BEING OVER-TOPPED. SEVERAL THOUSANDS OF ACRES OF LAND FLOOD BETWEEN THE LEVEES. | | 70.0 | LOWLAND FLOODING WILL CONTINUE TO SLOWLY RECEDE...BUT THE RIVER WILL REMAIN ABOVE FLOOD STAGE FOR SEVERAL MORE DAYS. | | 67.0 | THE COLUMBIA LOCK AND DAM RECREATIONAL AREA FLOODS AND MUST BE CLOSED. IN ADDITION...EXPECT MODERATE TO SEVERE FLOODING OF LOWLAND RIVER BOTTOMS. | | 65.0 | THE RIVERTON RECREATIONAL AREA FLOODS AND MUST BE CLOSED. IN ADDITION...EXPECT MINOR FLOODING OF LOWLAND RIVER BOTTOMS. |
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1) 72.37 ft on 05/05/1991
2) 70.65 ft on 05/13/1973
3) 69.30 ft on 11/12/2009
4) 69.10 ft on 01/09/1983
5) 68.30 ft on 03/19/2001
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1) 0.00 ft on 10/24/1985
2) 35.80 ft on 04/16/1972
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