South Fork Stillaguamish River near Granite Falls

1. 18.00 ftthe 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.
2. 16.00 ftthe 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.
3. 14.00 ftthe 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.

Most recent crests

• December 5, 2023: 17.55 ft
• November 5, 2022: 14.04 ft
• March 1, 2022: 15.04 ft
• January 12, 2022: 13.33 ft
• October 29, 2021: 14.33 ft
• January 13, 2021: 14.32 ft
• February 1, 2020: 17.41 ft
• October 22, 2019: 14.31 ft
• November 22, 2017: 16.82 ft
• October 22, 2017: 14.03 ft

• UpstreamSouth Fork Stillaguamish River at Verlot
• DownstreamSouth Fork Stillaguamish River at Jordan Rd. Bridge
• Pilchuck Creek at Pilchuck Creek
• Pilchuck River at Menzel Lk Rd
• Stillaguamish River at Arlington
• North Fork Stillaguamish River at Arlington
• Oso
• Snohomish River at Ebey Slough

Forecasts by the Northwest River Forecast Center. Forecasts are not available. Only observed stages are available for this point. -- none --

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.