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Hydrograph River at a Glance Download
Stillaguamish River at Arlington Stage (ft)Flow (kcfs)Observed: 3.28 ft at 1:05AM Mar 16, 2024Observed: 3.22 ft at 1:20AM Mar 16, 2024Observed: 3.32 ft at 1:35AM Mar 16, 2024Observed: 3.34 ft at 2:05AM Mar 16, 2024Observed: 3.34 ft at 2:20AM Mar 16, 2024Observed: 3.36 ft at 2:35AM Mar 16, 2024Observed: 3.38 ft at 2:50AM Mar 16, 2024Observed: 3.36 ft at 3:05AM Mar 16, 2024Observed: 3.4 ft at 3:20AM Mar 16, 2024Observed: 3.42 ft at 3:35AM Mar 16, 2024Observed: 3.42 ft at 3:50AM Mar 16, 2024Observed: 3.44 ft at 4:20AM Mar 16, 2024Observed: 3.44 ft at 4:35AM Mar 16, 2024Observed: 3.46 ft at 4:50AM Mar 16, 2024Observed: 3.5 ft at 5:05AM Mar 16, 2024Observed: 3.52 ft at 5:20AM Mar 16, 2024Observed: 3.54 ft at 5:35AM Mar 16, 2024Observed: 3.58 ft at 6:05AM Mar 16, 2024Observed: 3.58 ft at 6:20AM Mar 16, 2024Observed: 3.58 ft at 6:35AM Mar 16, 2024Observed: 3.58 ft at 7:05AM Mar 16, 2024Observed: 3.64 ft at 7:20AM Mar 16, 2024Observed: 3.62 ft at 7:35AM Mar 16, 2024Observed: 3.66 ft at 7:50AM Mar 16, 2024Observed: 3.64 ft at 8:05AM Mar 16, 2024Observed: 3.64 ft at 8:35AM Mar 16, 2024Observed: 3.66 ft at 9:05AM Mar 16, 2024Observed: 3.72 ft at 9:20AM Mar 16, 2024Observed: 3.7 ft at 9:35AM Mar 16, 2024Observed: 3.68 ft at 9:50AM Mar 16, 2024Observed: 3.7 ft at 10:05AM Mar 16, 2024Observed: 3.7 ft at 10:20AM Mar 16, 2024Observed: 3.7 ft at 10:35AM Mar 16, 2024Observed: 3.7 ft at 10:50AM Mar 16, 2024Observed: 3.7 ft at 11:05AM Mar 16, 2024Observed: 3.74 ft at 11:20AM Mar 16, 2024Observed: 3.74 ft at 11:50AM Mar 16, 2024Observed: 3.74 ft at 12:05PM Mar 16, 2024Observed: 3.72 ft at 12:20PM Mar 16, 2024Observed: 3.76 ft at 12:35PM Mar 16, 2024Observed: 3.76 ft at 12:50PM Mar 16, 2024Observed: 3.7 ft at 1:05PM Mar 16, 2024Observed: 3.72 ft at 1:20PM Mar 16, 2024Observed: 3.74 ft at 1:50PM Mar 16, 2024Observed: 3.8 ft at 2:05PM Mar 16, 2024Observed: 3.74 ft at 2:35PM Mar 16, 2024Observed: 3.46 ft at 2:50PM Mar 16, 2024Observed: 3.76 ft at 3:05PM Mar 16, 2024Observed: 3.8 ft at 3:50PM Mar 16, 2024Observed: 3.84 ft at 4:05PM Mar 16, 2024Observed: 3.7 ft at 4:50PM Mar 16, 2024Observed: 3.84 ft at 5:05PM Mar 16, 2024Observed: 3.8 ft at 5:35PM Mar 16, 2024Observed: 3.8 ft at 5:50PM Mar 16, 2024Observed: 3.8 ft at 6:05PM Mar 16, 2024Observed: 3.8 ft at 6:35PM Mar 16, 2024Observed: 3.84 ft at 6:50PM Mar 16, 2024Observed: 3.8 ft at 7:05PM Mar 16, 2024Observed: 3.8 ft at 7:20PM Mar 16, 2024Observed: 3.8 ft at 8:05PM Mar 16, 2024Observed: 3.84 ft at 8:50PM Mar 16, 2024Observed: 3.84 ft at 9:05PM Mar 16, 2024Observed: 3.94 ft at 9:20PM Mar 16, 2024Observed: 3.9 ft at 9:35PM Mar 16, 2024Observed: 3.94 ft at 10:05PM Mar 16, 2024Observed: 3.94 ft at 10:20PM Mar 16, 2024Observed: 3.96 ft at 10:35PM Mar 16, 2024Observed: 3.96 ft at 10:50PM Mar 16, 2024Observed: 4 ft at 11:05PM Mar 16, 2024Observed: 4.02 ft at 11:20PM Mar 16, 2024Observed: 4.02 ft at 11:35PM Mar 16, 2024Observed: 4.1 ft at 12:05AM Mar 17, 2024Observed: 4.08 ft at 12:20AM Mar 17, 2024Observed: 4.12 ft at 12:35AM Mar 17, 2024Observed: 4.16 ft at 1:05AM Mar 17, 2024Observed: 4.2 ft at 1:35AM Mar 17, 2024Observed: 4.24 ft at 2:20AM Mar 17, 2024Observed: 4.3 ft at 2:35AM Mar 17, 2024Observed: 4.3 ft at 2:50AM Mar 17, 2024Observed: 4.28 ft at 3:05AM Mar 17, 2024Observed: 4.34 ft at 3:20AM Mar 17, 2024Observed: 4.3 ft at 3:35AM Mar 17, 2024Observed: 4.38 ft at 3:50AM Mar 17, 2024Observed: 4.38 ft at 4:20AM Mar 17, 2024Observed: 4.36 ft at 4:35AM Mar 17, 2024Observed: 4.38 ft at 4:50AM Mar 17, 2024Observed: 4.44 ft at 5:20AM Mar 17, 2024Observed: 4.44 ft at 5:35AM Mar 17, 2024Observed: 4.38 ft at 5:50AM Mar 17, 2024Observed: 4.42 ft at 6:05AM Mar 17, 2024Observed: 4.4 ft at 6:20AM Mar 17, 2024Observed: 4.42 ft at 6:50AM Mar 17, 2024Observed: 4.44 ft at 7:05AM Mar 17, 2024Observed: 4.42 ft at 7:20AM Mar 17, 2024Observed: 4.46 ft at 7:35AM Mar 17, 2024Observed: 4.42 ft at 7:50AM Mar 17, 2024Observed: 4.42 ft at 8:05AM Mar 17, 2024Observed: 4.46 ft at 8:35AM Mar 17, 2024Observed: 4.4 ft at 8:50AM Mar 17, 2024Observed: 4.44 ft at 9:05AM Mar 17, 2024Observed: 4.38 ft at 9:20AM Mar 17, 2024Observed: 4.4 ft at 9:35AM Mar 17, 2024Observed: 4.42 ft at 10:05AM Mar 17, 2024Observed: 4.38 ft at 10:20AM Mar 17, 2024Observed: 4.44 ft at 10:35AM Mar 17, 2024Observed: 4.46 ft at 10:50AM Mar 17, 2024Observed: 4.4 ft at 11:05AM Mar 17, 2024Observed: 4.4 ft at 11:20AM Mar 17, 2024Observed: 4.38 ft at 11:35AM Mar 17, 2024Observed: 4.42 ft at 11:50AM Mar 17, 2024Observed: 4.4 ft at 12:05PM Mar 17, 2024Observed: 4.4 ft at 12:20PM Mar 17, 2024Observed: 4.4 ft at 12:35PM Mar 17, 2024Observed: 4.42 ft at 12:50PM Mar 17, 2024Observed: 4.42 ft at 1:05PM Mar 17, 2024Observed: 4.38 ft at 1:20PM Mar 17, 2024Observed: 4.36 ft at 1:35PM Mar 17, 2024Observed: 4.42 ft at 1:50PM Mar 17, 2024Observed: 4.38 ft at 2:05PM Mar 17, 2024Observed: 4.38 ft at 2:20PM Mar 17, 2024Observed: 4.36 ft at 2:35PM Mar 17, 2024Observed: 4.38 ft at 2:50PM Mar 17, 2024Observed: 4.36 ft at 3:05PM Mar 17, 2024Observed: 4.38 ft at 3:20PM Mar 17, 2024Observed: 4.34 ft at 3:35PM Mar 17, 2024Observed: 4.34 ft at 3:50PM Mar 17, 2024Observed: 4.36 ft at 4:05PM Mar 17, 2024Observed: 4.34 ft at 4:20PM Mar 17, 2024Observed: 4.32 ft at 4:35PM Mar 17, 2024Observed: 4.24 ft at 4:50PM Mar 17, 2024Observed: 4.32 ft at 5:05PM Mar 17, 2024Observed: 4.36 ft at 5:20PM Mar 17, 2024Observed: 4.36 ft at 5:35PM Mar 17, 2024Observed: 4.28 ft at 5:50PM Mar 17, 2024Observed: 4.32 ft at 6:05PM Mar 17, 2024Observed: 4.26 ft at 6:20PM Mar 17, 2024Observed: 4.34 ft at 6:35PM Mar 17, 2024Observed: 4.3 ft at 6:50PM Mar 17, 2024Observed: 4.42 ft at 7:05PM Mar 17, 2024Observed: 4.34 ft at 7:20PM Mar 17, 2024Observed: 4.28 ft at 7:35PM Mar 17, 2024Observed: 4.28 ft at 7:50PM Mar 17, 2024Observed: 4.28 ft at 8:05PM Mar 17, 2024Observed: 4.26 ft at 8:35PM Mar 17, 2024Observed: 4.3 ft at 9:05PM Mar 17, 2024Observed: 4.24 ft at 9:20PM Mar 17, 2024Observed: 4.32 ft at 9:35PM Mar 17, 2024Observed: 4.34 ft at 9:50PM Mar 17, 2024Observed: 4.3 ft at 10:05PM Mar 17, 2024Observed: 4.34 ft at 10:20PM Mar 17, 2024Observed: 4.34 ft at 10:35PM Mar 17, 2024Observed: 4.34 ft at 10:50PM Mar 17, 2024Observed: 4.38 ft at 11:20PM Mar 17, 2024Observed: 4.38 ft at 11:50PM Mar 17, 2024Observed: 4.38 ft at 12:05AM Mar 18, 2024Observed: 4.44 ft at 12:20AM Mar 18, 2024Observed: 4.4 ft at 12:35AM Mar 18, 2024Observed: 4.46 ft at 12:50AM Mar 18, 2024Observed: 4.42 ft at 1:05AM Mar 18, 2024Observed: 4.44 ft at 1:20AM Mar 18, 2024Observed: 4.52 ft at 1:35AM Mar 18, 2024Observed: 4.46 ft at 1:50AM Mar 18, 2024Observed: 4.46 ft at 2:05AM Mar 18, 2024Observed: 4.5 ft at 2:20AM Mar 18, 2024Observed: 4.5 ft at 2:35AM Mar 18, 2024Observed: 4.52 ft at 3:05AM Mar 18, 2024Observed: 4.54 ft at 3:20AM Mar 18, 2024Observed: 4.54 ft at 3:35AM Mar 18, 2024Observed: 4.52 ft at 4:05AM Mar 18, 2024Highest Observation: 4.6 ft at 4:35AM Mar 18, 2024Observed: 4.58 ft at 5:05AM Mar 18, 2024Highest Observation: 4.6 ft at 5:35AM Mar 18, 2024Observed: 4.58 ft at 5:50AM Mar 18, 2024Observed: 4.56 ft at 6:05AM Mar 18, 2024Observed: 4.58 ft at 6:20AM Mar 18, 2024Highest Observation: 4.6 ft at 6:35AM Mar 18, 2024Highest Observation: 4.6 ft at 6:50AM Mar 18, 2024Highest Observation: 4.6 ft at 7:20AM Mar 18, 2024Observed: 4.58 ft at 7:50AM Mar 18, 2024Highest Observation: 4.6 ft at 8:20AM Mar 18, 2024Observed: 4.58 ft at 8:35AM Mar 18, 2024Observed: 4.52 ft at 8:50AM Mar 18, 2024Observed: 4.54 ft at 9:05AM Mar 18, 2024Observed: 4.46 ft at 9:20AM Mar 18, 2024Observed: 4.52 ft at 9:35AM Mar 18, 2024Observed: 4.56 ft at 9:50AM Mar 18, 2024Observed: 4.46 ft at 10:05AM Mar 18, 2024Observed: 4.54 ft at 10:20AM Mar 18, 2024Observed: 4.5 ft at 10:35AM Mar 18, 2024Observed: 4.44 ft at 11:05AM Mar 18, 2024Observed: 4.46 ft at 11:50AM Mar 18, 2024Observed: 4.56 ft at 12:05PM Mar 18, 2024Observed: 4.46 ft at 12:20PM Mar 18, 2024Observed: 4.44 ft at 12:35PM Mar 18, 2024Observed: 4.46 ft at 12:50PM Mar 18, 2024Observed: 4.44 ft at 1:05PM Mar 18, 2024Observed: 4.42 ft at 1:20PM Mar 18, 2024Observed: 4.44 ft at 1:50PM Mar 18, 2024Observed: 4.44 ft at 2:20PM Mar 18, 2024Observed: 4.44 ft at 2:35PM Mar 18, 2024Observed: 4.44 ft at 2:50PM Mar 18, 2024Observed: 4.42 ft at 3:05PM Mar 18, 2024Observed: 4.42 ft at 3:20PM Mar 18, 2024Observed: 4.38 ft at 3:35PM Mar 18, 2024Observed: 4.42 ft at 3:50PM Mar 18, 2024Observed: 4.4 ft at 4:05PM Mar 18, 2024Observed: 4.4 ft at 4:20PM Mar 18, 2024Observed: 4.34 ft at 4:35PM Mar 18, 2024Observed: 4.34 ft at 4:50PM Mar 18, 2024Observed: 4.38 ft at 5:05PM Mar 18, 2024Observed: 4.4 ft at 5:20PM Mar 18, 2024Observed: 4.34 ft at 5:35PM Mar 18, 2024Observed: 4.34 ft at 5:50PM Mar 18, 2024Observed: 4.3 ft at 6:05PM Mar 18, 2024Observed: 4.34 ft at 6:20PM Mar 18, 2024Observed: 4.3 ft at 6:35PM Mar 18, 2024Observed: 4.34 ft at 6:50PM Mar 18, 2024Observed: 4.32 ft at 7:05PM Mar 18, 2024Observed: 4.28 ft at 7:20PM Mar 18, 2024Observed: 4.34 ft at 7:35PM Mar 18, 2024Observed: 4.3 ft at 7:50PM Mar 18, 2024Observed: 4.26 ft at 8:05PM Mar 18, 2024Observed: 4.32 ft at 8:20PM Mar 18, 2024Observed: 4.34 ft at 8:35PM Mar 18, 2024Observed: 4.32 ft at 8:50PM Mar 18, 2024Observed: 4.32 ft at 9:05PM Mar 18, 2024Observed: 4.3 ft at 9:20PM Mar 18, 2024Observed: 4.32 ft at 9:35PM Mar 18, 2024Observed: 4.34 ft at 9:50PM Mar 18, 2024Observed: 4.34 ft at 10:05PM Mar 18, 2024Observed: 4.28 ft at 10:20PM Mar 18, 2024Observed: 4.28 ft at 10:35PM Mar 18, 2024Observed: 4.3 ft at 10:50PM Mar 18, 2024Observed: 4.36 ft at 11:05PM Mar 18, 2024Observed: 4.34 ft at 11:20PM Mar 18, 2024Observed: 4.36 ft at 11:35PM Mar 18, 2024Observed: 4.4 ft at 12:20AM Mar 19, 2024Observed: 4.42 ft at 12:35AM Mar 19, 2024Forecast: 4.13 ft 5:00AM Mar 19, 2024Forecast: 4.03 ft 11:00AM Mar 19, 2024Forecast: 3.79 ft 5:00PM Mar 19, 2024Forecast: 3.68 ft 11:00PM Mar 19, 2024Forecast: 3.66 ft 5:00AM Mar 20, 2024Forecast: 3.58 ft 11:00AM Mar 20, 2024Forecast: 3.49 ft 5:00PM Mar 20, 2024Forecast: 3.49 ft 11:00PM Mar 20, 2024Forecast: 3.65 ft 5:00AM Mar 21, 2024Forecast: 4.04 ft 11:00AM Mar 21, 2024Forecast: 4.27 ft 5:00PM Mar 21, 2024Forecast: 4.44 ft 11:00PM Mar 21, 2024Forecast: 4.49 ft 5:00AM Mar 22, 2024Forecast: 4.47 ft 11:00AM Mar 22, 2024Forecast: 4.46 ft 5:00PM Mar 22, 2024Forecast: 4.48 ft 11:00PM Mar 22, 2024Forecast: 4.51 ft 5:00AM Mar 23, 2024Forecast: 4.52 ft 11:00AM Mar 23, 2024Forecast: 4.52 ft 5:00PM Mar 23, 2024Forecast: 4.53 ft 11:00PM Mar 23, 2024Highest Forecast: 4.54 ft 5:00AM Mar 24, 2024Forecast: 4.48 ft 11:00AM Mar 24, 2024Forecast: 4.34 ft 5:00PM Mar 24, 2024Forecast: 4.21 ft 11:00PM Mar 24, 2024Forecast: 4.11 ft 5:00AM Mar 25, 2024Forecast: 4.03 ft 11:00AM Mar 25, 2024Forecast: 3.91 ft 5:00PM Mar 25, 2024Forecast: 3.8 ft 11:00PM Mar 25, 2024ARLW1(plotting HGIRR) Graph Created (12:50AM Mar 19, 2024)ObservedForecast (issued 2:41PM Mar 18)Latest observed value: 4.42 ft at 12:35 AM PDT 19-Mar-2024. Flood Stage is 14 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: 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.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Stillaguamish River at Arlington are issued routinely year-round.

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Upstream Locations Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 17.5
Flood Stage: 14
Action Stage: 12.5
Low Stage (in feet): 0

Historic Crests
(1) 21.34 ft on 12/05/2023 (P)
(2) 21.34 ft on 12/05/2023 (P)
(3) 21.29 ft on 12/12/2010
(4) 21.06 ft on 11/06/2006 (P)
(5) 20.82 ft on 01/08/2009 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 15.30 ft on 01/28/2024 (P)
(2) 15.30 ft on 01/28/2024 (P)
(3) 21.34 ft on 12/05/2023 (P)
(4) 21.34 ft on 12/05/2023 (P)
(5) 15.82 ft on 12/25/2022
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
KML Image
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
21 the Stillaguamish River will cause severe record flooding. Deep and swift flood waters will inundate many roads including Highway 530...Marine Drive and Norman Rd and residential areas in Silvana...Norman... Florence...and Stanwood. Levees are subject to overtopping and damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the river basin. This stage on the Stillaguamish corresponds to a Phase 4 in the Snohomish County flood program.
20 the Stillaguamish River will cause near record major flooding. Deep and swift flood waters will inundate many roads including Highway 530 east of Arlington and at Island Crossing and most valley roads downstream of I-5 to Stanwood. Levees are subject to overtopping and damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Stillaguamish River Basin. This stage corresponds to Phase 4 in Snohomish County flood program.
19 the Stillaguamish River will cause major flooding. Deep and swift waters will flood many roads including Pioneer Highway...Hwy 530...Marine Drive and Norman Rd. Swift waters will flood residential areas near Silvana...Norman...Florence and Stanwood. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Stillaguamish River Basin. A stage of 19 feet on the Stillaguamish River corresponds to Phase 4 in the Snohomish County Flood program.
18 the Stillaguamish River will flood many roads including Hwy 530...Pioneer Highway...Marine Drive and numerous locations along Norman Rd. Swift waters will flood residential areas near Silvana...Norman and Florence. A stage of 18 feet on the Stillaguamish River corresponds roughly to Phase 3 in the Snohomish County Flood program.
17 the Stillaguamish River will cause flooding mainly in the Silvana area, along Norman Road and in Florence. A stage of 17 feet on the Stillaguamish River corresponds roughly to Phase 3 in the Snohomish County Flood program.
16 the Stillaguamish River will cause minor flooding mainly in the Silvana area...including over Pioneer Highway and along Norman Rd. A stage of 16 feet on the Stillaguamish River corresponds roughly to Phase 2 in the Snohomish County Flood program.
14 the Stillaguamish River will locally spill over its banks. Minor flooding around Silvana will occur...including over Pioneer Highway. A stage of 14 feet on the Stillaguamish River corresponds roughly to Phase 2 in the Snohomish County Flood program.
About This Location Collapse

Latitude: 48.203611° N, Longitude: 122.128056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 14 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 50.75 ft 64.75 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 47.05 ft 61.05 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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