Major Flood
15 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
14 ft
Minor Flood
13 ft
Action Stage
10.7 ft
What Floods at Each Level
15 ft
the North Fork Stillaguamish River will cause extensive flooding from near Darrington downstream to the confluence with the South Fork Stillaguamish River...including Oso...Cicero...Swede Heaven and SR 530. Flood waters will also cause riverbank erosion. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the N Fork Stillaguamish River Basin. A stage of 15 feet corresponds to Phase 4 in the Snohomish County Flood Warning System.
14 ft
the North Fork Stillaguamish River will cause flooding in the Cicero and Swede Heaven areas...Oso Loop Road...and SR 530. Flood waters will also cause riverbank erosion. A stage of 14 feet corresponds to Phase 3 in the Snohomish County Flood Warning System.
13 ft
the North Fork Stillaguamish River will cause flooding of Oso Loop Road and cause minor riverbank erosion. A stage of 13 feet corresponds to Phase 2 in the Snohomish County Flood Warning System.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 12, 2010 | 15.59 ft | 55,100 cfs |
| Dec 5, 2023 | 15.21 ft | 30,563 cfs |
| Dec 5, 2023 | 15.21 ft | 33,800 cfs |
About This Gauge
USGS Site
NWS LID
ARGW1
River
North Fork Stillaguamish River
County
Snohomish, WA
Coordinates
48.2617°N, 122.0464°W
Get Flood Alerts for North Fork Stillaguamish River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of North Fork Stillaguamish River near Arlington?
The North Fork Stillaguamish River near Arlington gauge is maintained by USGS (site 12167000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for North Fork Stillaguamish River near Arlington?
The NWS-defined flood stage for North Fork Stillaguamish River near Arlington is 13 feet. Action stage begins at 10.7 feet. Moderate flooding starts at 14 feet, and major flooding at 15 feet.
How do I get alerts when North Fork Stillaguamish River rises?
Download StormCast free on Google Play, go to River Gauges, and add North Fork Stillaguamish River near Arlington to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the North Fork Stillaguamish River near Arlington gauge located?
The gauge is located in Snohomish County, Washington at coordinates 48.2617°N, 122.0464°W. USGS site number: 12167000. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
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Source & Notes
Data provided by: U. S. Geological Survey, Observations courtesy of U.S. Geological Survey
- River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.