| 13.0 | Issaquah Creek will cause severe near record flooding in Issaquah valley. Deep and swift flood waters will inundate residential and business areas and numerous roads. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Issaquah Creek Basin. This level on Issaquah Creek corresponds to a Phase 4 flood in the City of Issaquah flood system | | 11.5 | Issaquah Creek will cause major flooding in most of the valley. Deep and swift flood waters will inundate residential and business areas and numerous roads. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Issaquah Creek Basin. This level on Issaquah Creek corresponds roughly to a Phase 4 flood in the City of Issaquah flood system | | 10.5 | Issaquah Creek will flood most low areas in the valley. Swift waters will flood residential and business areas and roads including Newport Way. This level on Issaquah Creek corresponds roughly to a Phase 3 flood in the City of Issaquah flood system | | 8.5 | Issaquah Creek will spill over its banks into low flood prone areas of the valley. This level on Issaquah Creek corresponds roughly to a Phase 2 flood in the City of Issaquah flood system |
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1) 13.50 ft on 01/09/1990
2) 13.43 ft on 11/24/1990
3) 13.20 ft on 11/24/1986
4) 12.84 ft on 02/08/1996
5) 12.54 ft on 01/08/2009
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1) 0.00 ft on 09/29/1994
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