| 12.0 | water will begin to inundate the C&O towpath, along the Maryland side of the river. Downstream in the District of Columbia at Wisconsin Avenue, the tidal potomac river will near its 7 foot flood stage at time of high tide. | | 10.0 | the river will begin to overflow into low lying areas on the Maryland side of the river with several boat houses downstream beginning to flood. | | 7.0 | the river begins to inundate Whites Ferry upstream in Montgomery county Maryland.. | | 5.0 | the river is at hazardous levels for recreational use. |
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1) 28.10 ft on 03/19/1936
2) 26.88 ft on 10/17/1942
3) 23.30 ft on 04/28/1937
4) 22.03 ft on 06/24/1972
5) 19.29 ft on 01/21/1996
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1) 0.00 ft on 09/09/1966
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