| 18.0 | the South Fork Stillaguamish River will cause flooding of Jordan Road...the Robe Valley area upstream from Granite Falls...and Granite Falls downstream to the Blue Spruce area. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the South Fork Stillaguamish River Basin. A stage of 18 feet corresponds to Phase 4 in the Snohomish County Flood Warning System. | | 16.0 | the South Fork Stillaguamish River will cause flooding in Granite Falls downstream to the Blue Spruce area and Jordan Road. A stage of 16 feet corresponds to Phase 3 in the Snohomish County Flood Warning System. | | 14.0 | the South Fork Stillaguamish River will cause flooding along the river and tributaries. A stage of 14 feet corresponds to Phase 2 in the Snohomish County Flood Warning System. |
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1) 22.82 ft on 11/06/2006
2) 21.17 ft on 10/20/2003
3) 19.70 ft on 02/26/1932
4) 18.10 ft on 02/09/1951
5) 17.26 ft on 01/08/2009
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1) 2.99 ft on 08/19/1941
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