| 11.0 | Major flooding occurs all aruond the North end of the lake, especially in Lakeport and Clearlake Oaks. Highway 20 around the North end of the lake is closed in some areas. | | 9.0 | Low lying structures and some main roads around the lake are threatened by the high lake levels. | | 8.5 | Minor flooding of some lake side residents occurs. More buildings are threatened from Lakeport to Clearlake Oaks. |
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1) 11.44 ft on 02/24/1998
2) 11.34 ft on 02/02/1986
3) 11.34 ft on 01/03/1983
4) 11.09 ft on 01/28/1914
5) 8.89 ft on 01/31/1995
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Low water records are unavailable.
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