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This probabilistic forecast is issued by the Northwest River Forecast Center.
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About this graph
Forecasts for the South Fork Stillaguamish River near Granite Falls are issued routinely year-round.
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Downstream Gauge Downstream Gauge - at Jordan Rd. Bridge
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 12.9
Low Stage (in feet): 0

Historic Crests
(1) 22.82 ft on 11/06/2006
(2) 21.17 ft on 10/20/2003
(3) 20.35 ft on 11/17/2015
(4) 19.70 ft on 02/26/1932
(5) 18.50 ft on 12/12/2010 (P)
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(P): Preliminary values subject to further review.

Recent Crests
(1) 17.55 ft on 12/05/2023 (P)
(2) 14.04 ft on 11/05/2022 (P)
(3) 15.04 ft on 03/01/2022 (P)
(4) 13.33 ft on 01/12/2022
(5) 14.33 ft on 10/29/2021 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.99 ft on 08/19/1941
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
18 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 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 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.

Other Real-time and/or Archive Data Sources:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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Page last modified: 2-Nov-2020 7:27 PM
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