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Hydrograph River at a Glance Download
Pilchuck River near Snohomish Stage (ft)Flow (cfs)Highest Observation: 11.8 ft at 2:15AM May 20, 2022Highest Observation: 11.8 ft at 2:30AM May 20, 2022Observed: 11.78 ft at 2:45AM May 20, 2022Observed: 11.78 ft at 3:00AM May 20, 2022Observed: 11.78 ft at 3:15AM May 20, 2022Observed: 11.77 ft at 3:30AM May 20, 2022Observed: 11.76 ft at 3:45AM May 20, 2022Observed: 11.76 ft at 4:00AM May 20, 2022Observed: 11.75 ft at 4:15AM May 20, 2022Observed: 11.75 ft at 4:30AM May 20, 2022Observed: 11.74 ft at 4:45AM May 20, 2022Observed: 11.74 ft at 5:00AM May 20, 2022Observed: 11.72 ft at 5:15AM May 20, 2022Observed: 11.72 ft at 5:30AM May 20, 2022Observed: 11.72 ft at 5:45AM May 20, 2022Observed: 11.71 ft at 6:00AM May 20, 2022Observed: 11.7 ft at 6:15AM May 20, 2022Observed: 11.7 ft at 6:30AM May 20, 2022Observed: 11.69 ft at 6:45AM May 20, 2022Observed: 11.69 ft at 7:00AM May 20, 2022Observed: 11.68 ft at 7:15AM May 20, 2022Observed: 11.67 ft at 7:30AM May 20, 2022Observed: 11.67 ft at 7:45AM May 20, 2022Observed: 11.66 ft at 8:00AM May 20, 2022Observed: 11.66 ft at 8:15AM May 20, 2022Observed: 11.65 ft at 8:30AM May 20, 2022Observed: 11.64 ft at 8:45AM May 20, 2022Observed: 11.64 ft at 9:00AM May 20, 2022Observed: 11.63 ft at 9:15AM May 20, 2022Observed: 11.63 ft at 9:30AM May 20, 2022Observed: 11.63 ft at 9:45AM May 20, 2022Observed: 11.62 ft at 10:00AM May 20, 2022Observed: 11.62 ft at 10:15AM May 20, 2022Observed: 11.62 ft at 10:30AM May 20, 2022Observed: 11.61 ft at 10:45AM May 20, 2022Observed: 11.6 ft at 11:00AM May 20, 2022Observed: 11.59 ft at 11:15AM May 20, 2022Observed: 11.59 ft at 11:30AM May 20, 2022Observed: 11.59 ft at 11:45AM May 20, 2022Observed: 11.57 ft at 12:00PM May 20, 2022Observed: 11.58 ft at 12:15PM May 20, 2022Observed: 11.58 ft at 12:30PM May 20, 2022Observed: 11.57 ft at 12:45PM May 20, 2022Observed: 11.56 ft at 1:00PM May 20, 2022Observed: 11.56 ft at 1:15PM May 20, 2022Observed: 11.56 ft at 1:30PM May 20, 2022Observed: 11.55 ft at 1:45PM May 20, 2022Observed: 11.55 ft at 2:00PM May 20, 2022Observed: 11.55 ft at 2:15PM May 20, 2022Observed: 11.54 ft at 2:30PM May 20, 2022Observed: 11.53 ft at 2:45PM May 20, 2022Observed: 11.53 ft at 3:00PM May 20, 2022Observed: 11.53 ft at 3:15PM May 20, 2022Observed: 11.52 ft at 3:30PM May 20, 2022Observed: 11.52 ft at 3:45PM May 20, 2022Observed: 11.51 ft at 4:00PM May 20, 2022Observed: 11.51 ft at 4:15PM May 20, 2022Observed: 11.5 ft at 4:30PM May 20, 2022Observed: 11.5 ft at 4:45PM May 20, 2022Observed: 11.49 ft at 5:00PM May 20, 2022Observed: 11.49 ft at 5:15PM May 20, 2022Observed: 11.48 ft at 5:30PM May 20, 2022Observed: 11.47 ft at 5:45PM May 20, 2022Observed: 11.47 ft at 6:00PM May 20, 2022Observed: 11.47 ft at 6:15PM May 20, 2022Observed: 11.46 ft at 6:30PM May 20, 2022Observed: 11.45 ft at 6:45PM May 20, 2022Observed: 11.45 ft at 7:00PM May 20, 2022Observed: 11.45 ft at 7:15PM May 20, 2022Observed: 11.44 ft at 7:30PM May 20, 2022Observed: 11.44 ft at 7:45PM May 20, 2022Observed: 11.44 ft at 8:00PM May 20, 2022Observed: 11.43 ft at 8:15PM May 20, 2022Observed: 11.43 ft at 8:30PM May 20, 2022Observed: 11.42 ft at 8:45PM May 20, 2022Observed: 11.42 ft at 9:00PM May 20, 2022Observed: 11.41 ft at 9:15PM May 20, 2022Observed: 11.41 ft at 9:30PM May 20, 2022Observed: 11.41 ft at 9:45PM May 20, 2022Observed: 11.4 ft at 10:00PM May 20, 2022Observed: 11.4 ft at 10:15PM May 20, 2022Observed: 11.4 ft at 10:30PM May 20, 2022Observed: 11.38 ft at 10:45PM May 20, 2022Observed: 11.39 ft at 11:00PM May 20, 2022Observed: 11.39 ft at 11:15PM May 20, 2022Observed: 11.38 ft at 11:30PM May 20, 2022Observed: 11.38 ft at 11:45PM May 20, 2022Observed: 11.38 ft at 12:00AM May 21, 2022Observed: 11.37 ft at 12:15AM May 21, 2022Observed: 11.37 ft at 12:30AM May 21, 2022Observed: 11.37 ft at 12:45AM May 21, 2022Observed: 11.37 ft at 1:00AM May 21, 2022Observed: 11.36 ft at 1:15AM May 21, 2022Observed: 11.36 ft at 1:30AM May 21, 2022Observed: 11.36 ft at 1:45AM May 21, 2022Observed: 11.35 ft at 2:00AM May 21, 2022Observed: 11.35 ft at 2:15AM May 21, 2022Observed: 11.34 ft at 2:30AM May 21, 2022Observed: 11.34 ft at 2:45AM May 21, 2022Observed: 11.34 ft at 3:00AM May 21, 2022Observed: 11.34 ft at 3:15AM May 21, 2022Observed: 11.34 ft at 3:30AM May 21, 2022Observed: 11.33 ft at 3:45AM May 21, 2022Observed: 11.33 ft at 4:00AM May 21, 2022Observed: 11.32 ft at 4:15AM May 21, 2022Observed: 11.32 ft at 4:30AM May 21, 2022Observed: 11.32 ft at 4:45AM May 21, 2022Observed: 11.32 ft at 5:00AM May 21, 2022Observed: 11.31 ft at 5:15AM May 21, 2022Observed: 11.32 ft at 5:30AM May 21, 2022Observed: 11.31 ft at 5:45AM May 21, 2022Observed: 11.31 ft at 6:00AM May 21, 2022Observed: 11.31 ft at 6:15AM May 21, 2022Observed: 11.31 ft at 6:30AM May 21, 2022Observed: 11.3 ft at 6:45AM May 21, 2022Observed: 11.3 ft at 7:00AM May 21, 2022Observed: 11.3 ft at 7:15AM May 21, 2022Observed: 11.29 ft at 7:30AM May 21, 2022Observed: 11.29 ft at 7:45AM May 21, 2022Observed: 11.28 ft at 8:00AM May 21, 2022Observed: 11.29 ft at 8:15AM May 21, 2022Observed: 11.28 ft at 8:30AM May 21, 2022Observed: 11.28 ft at 8:45AM May 21, 2022Observed: 11.28 ft at 9:00AM May 21, 2022Observed: 11.28 ft at 9:15AM May 21, 2022Observed: 11.28 ft at 9:30AM May 21, 2022Observed: 11.28 ft at 9:45AM May 21, 2022Observed: 11.27 ft at 10:00AM May 21, 2022Observed: 11.27 ft at 10:15AM May 21, 2022Observed: 11.27 ft at 10:30AM May 21, 2022Observed: 11.27 ft at 10:45AM May 21, 2022Observed: 11.26 ft at 11:00AM May 21, 2022Observed: 11.26 ft at 11:15AM May 21, 2022Observed: 11.26 ft at 11:30AM May 21, 2022Observed: 11.26 ft at 11:45AM May 21, 2022Observed: 11.26 ft at 12:00PM May 21, 2022Observed: 11.26 ft at 12:15PM May 21, 2022Observed: 11.25 ft at 12:30PM May 21, 2022Observed: 11.25 ft at 12:45PM May 21, 2022Observed: 11.25 ft at 1:00PM May 21, 2022Observed: 11.25 ft at 1:15PM May 21, 2022Observed: 11.25 ft at 1:30PM May 21, 2022Observed: 11.25 ft at 1:45PM May 21, 2022Observed: 11.24 ft at 2:00PM May 21, 2022Observed: 11.23 ft at 2:15PM May 21, 2022Observed: 11.24 ft at 2:30PM May 21, 2022Observed: 11.23 ft at 2:45PM May 21, 2022Observed: 11.23 ft at 3:00PM May 21, 2022Observed: 11.24 ft at 3:15PM May 21, 2022Observed: 11.23 ft at 3:30PM May 21, 2022Observed: 11.22 ft at 3:45PM May 21, 2022Observed: 11.22 ft at 4:00PM May 21, 2022Observed: 11.21 ft at 4:15PM May 21, 2022Observed: 11.22 ft at 4:30PM May 21, 2022Observed: 11.22 ft at 4:45PM May 21, 2022Observed: 11.22 ft at 5:00PM May 21, 2022Observed: 11.22 ft at 5:15PM May 21, 2022Observed: 11.22 ft at 5:30PM May 21, 2022Observed: 11.22 ft at 5:45PM May 21, 2022Observed: 11.22 ft at 6:00PM May 21, 2022Observed: 11.21 ft at 6:15PM May 21, 2022Observed: 11.21 ft at 6:30PM May 21, 2022Observed: 11.21 ft at 6:45PM May 21, 2022Observed: 11.21 ft at 7:00PM May 21, 2022Observed: 11.21 ft at 7:15PM May 21, 2022Observed: 11.21 ft at 7:30PM May 21, 2022Observed: 11.21 ft at 7:45PM May 21, 2022Observed: 11.21 ft at 8:00PM May 21, 2022Observed: 11.21 ft at 8:15PM May 21, 2022Observed: 11.21 ft at 8:30PM May 21, 2022Observed: 11.21 ft at 8:45PM May 21, 2022Observed: 11.2 ft at 9:00PM May 21, 2022Observed: 11.19 ft at 9:15PM May 21, 2022Observed: 11.2 ft at 9:30PM May 21, 2022Observed: 11.21 ft at 9:45PM May 21, 2022Observed: 11.2 ft at 10:00PM May 21, 2022Observed: 11.2 ft at 10:15PM May 21, 2022Observed: 11.2 ft at 10:30PM May 21, 2022Observed: 11.2 ft at 10:45PM May 21, 2022Observed: 11.19 ft at 11:00PM May 21, 2022Observed: 11.19 ft at 11:15PM May 21, 2022Observed: 11.18 ft at 11:30PM May 21, 2022Observed: 11.19 ft at 11:45PM May 21, 2022Observed: 11.19 ft at 12:00AM May 22, 2022Observed: 11.2 ft at 12:15AM May 22, 2022Observed: 11.19 ft at 12:30AM May 22, 2022Observed: 11.19 ft at 12:45AM May 22, 2022Observed: 11.18 ft at 1:00AM May 22, 2022Observed: 11.19 ft at 1:15AM May 22, 2022Observed: 11.18 ft at 1:30AM May 22, 2022Observed: 11.18 ft at 1:45AM May 22, 2022Observed: 11.18 ft at 2:00AM May 22, 2022Observed: 11.18 ft at 2:15AM May 22, 2022Observed: 11.18 ft at 2:30AM May 22, 2022Observed: 11.18 ft at 2:45AM May 22, 2022Observed: 11.18 ft at 3:00AM May 22, 2022Observed: 11.18 ft at 3:15AM May 22, 2022Observed: 11.18 ft at 3:30AM May 22, 2022Observed: 11.19 ft at 3:45AM May 22, 2022Observed: 11.18 ft at 4:00AM May 22, 2022Observed: 11.18 ft at 4:15AM May 22, 2022Observed: 11.18 ft at 4:30AM May 22, 2022Observed: 11.17 ft at 4:45AM May 22, 2022Observed: 11.17 ft at 5:00AM May 22, 2022Observed: 11.17 ft at 5:15AM May 22, 2022Observed: 11.17 ft at 5:30AM May 22, 2022Observed: 11.16 ft at 5:45AM May 22, 2022Observed: 11.16 ft at 6:00AM May 22, 2022Observed: 11.17 ft at 6:15AM May 22, 2022Observed: 11.17 ft at 6:30AM May 22, 2022Observed: 11.17 ft at 6:45AM May 22, 2022Observed: 11.16 ft at 7:00AM May 22, 2022Observed: 11.15 ft at 7:15AM May 22, 2022Observed: 11.16 ft at 7:30AM May 22, 2022Observed: 11.15 ft at 7:45AM May 22, 2022Observed: 11.15 ft at 8:00AM May 22, 2022Observed: 11.16 ft at 8:15AM May 22, 2022Observed: 11.15 ft at 8:30AM May 22, 2022Observed: 11.15 ft at 8:45AM May 22, 2022Observed: 11.15 ft at 9:00AM May 22, 2022Observed: 11.15 ft at 9:15AM May 22, 2022Observed: 11.15 ft at 9:30AM May 22, 2022Observed: 11.15 ft at 9:45AM May 22, 2022Observed: 11.15 ft at 10:00AM May 22, 2022Observed: 11.15 ft at 10:15AM May 22, 2022Observed: 11.15 ft at 10:30AM May 22, 2022Observed: 11.15 ft at 10:45AM May 22, 2022Observed: 11.14 ft at 11:00AM May 22, 2022Observed: 11.14 ft at 11:15AM May 22, 2022Observed: 11.14 ft at 11:30AM May 22, 2022Observed: 11.14 ft at 11:45AM May 22, 2022Observed: 11.14 ft at 12:00PM May 22, 2022Observed: 11.13 ft at 12:15PM May 22, 2022Observed: 11.13 ft at 12:30PM May 22, 2022Observed: 11.13 ft at 12:45PM May 22, 2022Observed: 11.13 ft at 1:00PM May 22, 2022Observed: 11.13 ft at 1:15PM May 22, 2022Observed: 11.13 ft at 1:30PM May 22, 2022Observed: 11.13 ft at 1:45PM May 22, 2022Observed: 11.13 ft at 2:00PM May 22, 2022Observed: 11.12 ft at 2:15PM May 22, 2022Observed: 11.13 ft at 2:30PM May 22, 2022Observed: 11.13 ft at 2:45PM May 22, 2022Observed: 11.12 ft at 3:00PM May 22, 2022Observed: 11.12 ft at 3:15PM May 22, 2022Observed: 11.12 ft at 3:30PM May 22, 2022Observed: 11.12 ft at 3:45PM May 22, 2022Observed: 11.12 ft at 4:00PM May 22, 2022Observed: 11.11 ft at 4:15PM May 22, 2022Observed: 11.1 ft at 4:30PM May 22, 2022Observed: 11.11 ft at 4:45PM May 22, 2022Observed: 11.11 ft at 5:00PM May 22, 2022Observed: 11.11 ft at 5:15PM May 22, 2022Observed: 11.1 ft at 5:30PM May 22, 2022Observed: 11.1 ft at 5:45PM May 22, 2022Observed: 11.1 ft at 6:00PM May 22, 2022Observed: 11.1 ft at 6:15PM May 22, 2022Observed: 11.1 ft at 6:30PM May 22, 2022Observed: 11.09 ft at 6:45PM May 22, 2022Observed: 11.09 ft at 7:00PM May 22, 2022Observed: 11.09 ft at 7:15PM May 22, 2022Observed: 11.09 ft at 7:30PM May 22, 2022Observed: 11.09 ft at 7:45PM May 22, 2022Observed: 11.09 ft at 8:00PM May 22, 2022Observed: 11.09 ft at 8:15PM May 22, 2022Observed: 11.09 ft at 8:30PM May 22, 2022Observed: 11.09 ft at 8:45PM May 22, 2022Observed: 11.08 ft at 9:00PM May 22, 2022Observed: 11.08 ft at 9:15PM May 22, 2022Observed: 11.08 ft at 9:30PM May 22, 2022Observed: 11.07 ft at 9:45PM May 22, 2022Observed: 11.08 ft at 10:00PM May 22, 2022Observed: 11.07 ft at 10:15PM May 22, 2022Observed: 11.07 ft at 10:30PM May 22, 2022Observed: 11.07 ft at 10:45PM May 22, 2022Observed: 11.07 ft at 11:00PM May 22, 2022Observed: 11.07 ft at 11:15PM May 22, 2022Observed: 11.06 ft at 11:30PM May 22, 2022Observed: 11.07 ft at 11:45PM May 22, 2022Observed: 11.06 ft at 12:00AM May 23, 2022Observed: 11.06 ft at 12:15AM May 23, 2022Observed: 11.05 ft at 12:30AM May 23, 2022Observed: 11.05 ft at 12:45AM May 23, 2022Highest Forecast: 11.02 ft 5:00AM May 23, 2022Forecast: 10.99 ft 11:00AM May 23, 2022Forecast: 10.96 ft 5:00PM May 23, 2022Forecast: 10.92 ft 11:00PM May 23, 2022Forecast: 10.89 ft 5:00AM May 24, 2022Forecast: 10.86 ft 11:00AM May 24, 2022Forecast: 10.83 ft 5:00PM May 24, 2022Forecast: 10.8 ft 11:00PM May 24, 2022Forecast: 10.76 ft 5:00AM May 25, 2022Forecast: 10.73 ft 11:00AM May 25, 2022Forecast: 10.7 ft 5:00PM May 25, 2022Forecast: 10.69 ft 11:00PM May 25, 2022USGS--Water Resources of the United StatesPILW1(plotting HGIRG) Graph Created (2:05AM May 23, 2022)ObservedForecast (issued 4:04PM May 22)Latest observed value: 11.05 ft at 12:45 AM PDT 23-May-2022. Flood Stage is 18 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: NGVD29
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 Pilchuck River near Snohomish are issued routinely year-round.

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Downstream Gauge Downstream Gauge - at Snohomish
Flood Categories (in feet)
Major Flood Stage: 22
Moderate Flood Stage: 20
Flood Stage: 18
Action Stage: 16
Low Stage (in feet): 0

Historic Crests
(1) 20.39 ft on 01/08/2009
(2) 19.50 ft on 01/05/2015
(3) 19.20 ft on 02/22/2012
(4) 19.16 ft on 12/16/1999
(5) 19.14 ft on 11/06/2006
(6) 18.18 ft on 02/08/1996
(7) 17.90 ft on 11/07/2008
(8) 17.78 ft on 10/22/2019 (P)
(9) 17.71 ft on 01/25/1993
(10) 17.69 ft on 12/20/1994
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.78 ft on 10/22/2019 (P)
(2) 19.50 ft on 01/05/2015
(3) 16.85 ft on 12/23/2013
(4) 16.62 ft on 01/09/2013
(5) 19.20 ft on 02/22/2012
(6) 17.17 ft on 03/31/2011
(7) 16.38 ft on 01/21/2011
(8) 17.05 ft on 12/12/2010
(9) 20.39 ft on 01/08/2009
(10) 17.90 ft on 11/07/2008
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 8.50 ft on 06/09/2003
Zoom Level:16
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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
22 the Pilchuck River will cause record major flooding and will likely overtop levees. Flood waters will inundate residences and roads along the river from Menzel Lake Rd. upstream of Granite Falls down through the Lake Stevens area and Snohomish. This includes areas around Sexton Rd. and Orchard Ave in Snohomish...and 28th Place NE near Lake Stevens.
20 the Pilchuck River will cause flooding of residences and roads along the river from menzel Lake Rd. upstream of Granite Falls down through the Lake Stevens area and Snohomish. This includes areas around Sexton Rd. and Orchard Ave in Snohomish...and 28th Place NE near Lake Stevens.
18 the Pilchuck River spills out of its banks...flooding residences and roads in low lying areas along the river from Granite Falls downstream through the Lake Stevens area and Snohomish. This includes areas around Sexton Rd. and Orchard Ave in Snohomish.
About This Location Collapse

Latitude: 47.935000° N, Longitude: 122.071944° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 18 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 30.00 ft 48.00 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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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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(206) 526-6087
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Page last modified: 2-Nov-2020 7:27 PM
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