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Hydrograph River at a Glance Download
Green River (WA) below Howard Hanson Dam Stage (ft)Flow (kcfs)Observed: 4.85 ft at 1:00AM Mar 21, 2023Observed: 4.85 ft at 2:00AM Mar 21, 2023Observed: 4.85 ft at 3:00AM Mar 21, 2023Observed: 4.85 ft at 4:00AM Mar 21, 2023Observed: 4.85 ft at 5:00AM Mar 21, 2023Observed: 4.85 ft at 6:00AM Mar 21, 2023Observed: 4.85 ft at 7:00AM Mar 21, 2023Observed: 4.85 ft at 8:00AM Mar 21, 2023Observed: 4.85 ft at 9:00AM Mar 21, 2023Observed: 4.85 ft at 10:00AM Mar 21, 2023Observed: 4.85 ft at 11:00AM Mar 21, 2023Observed: 4.85 ft at 12:00PM Mar 21, 2023Observed: 4.85 ft at 1:00PM Mar 21, 2023Observed: 4.85 ft at 2:00PM Mar 21, 2023Observed: 4.85 ft at 3:00PM Mar 21, 2023Observed: 4.85 ft at 4:00PM Mar 21, 2023Observed: 4.85 ft at 5:00PM Mar 21, 2023Observed: 4.85 ft at 6:00PM Mar 21, 2023Observed: 4.86 ft at 7:00PM Mar 21, 2023Observed: 4.86 ft at 8:00PM Mar 21, 2023Observed: 4.86 ft at 9:00PM Mar 21, 2023Observed: 4.86 ft at 10:00PM Mar 21, 2023Observed: 4.86 ft at 11:00PM Mar 21, 2023Observed: 4.86 ft at 11:59PM Mar 21, 2023Observed: 4.86 ft at 1:00AM Mar 22, 2023Observed: 4.86 ft at 2:00AM Mar 22, 2023Observed: 4.86 ft at 3:00AM Mar 22, 2023Observed: 4.86 ft at 4:00AM Mar 22, 2023Observed: 4.86 ft at 5:00AM Mar 22, 2023Observed: 4.86 ft at 6:00AM Mar 22, 2023Observed: 4.86 ft at 7:00AM Mar 22, 2023Observed: 4.86 ft at 8:00AM Mar 22, 2023Observed: 4.86 ft at 9:00AM Mar 22, 2023Observed: 4.86 ft at 10:00AM Mar 22, 2023Observed: 4.86 ft at 11:00AM Mar 22, 2023Observed: 4.86 ft at 12:00PM Mar 22, 2023Observed: 4.86 ft at 1:00PM Mar 22, 2023Observed: 4.86 ft at 2:00PM Mar 22, 2023Observed: 4.86 ft at 3:00PM Mar 22, 2023Observed: 4.86 ft at 4:00PM Mar 22, 2023Observed: 4.86 ft at 5:00PM Mar 22, 2023Observed: 4.86 ft at 6:00PM Mar 22, 2023Observed: 4.87 ft at 7:00PM Mar 22, 2023Observed: 4.87 ft at 8:00PM Mar 22, 2023Observed: 4.87 ft at 9:00PM Mar 22, 2023Observed: 4.87 ft at 10:00PM Mar 22, 2023Observed: 4.87 ft at 11:00PM Mar 22, 2023Observed: 4.87 ft at 11:59PM Mar 22, 2023Observed: 4.87 ft at 1:00AM Mar 23, 2023Observed: 4.87 ft at 2:00AM Mar 23, 2023Observed: 4.87 ft at 3:00AM Mar 23, 2023Observed: 4.88 ft at 4:00AM Mar 23, 2023Observed: 4.87 ft at 5:00AM Mar 23, 2023Observed: 4.87 ft at 6:00AM Mar 23, 2023Observed: 4.88 ft at 7:00AM Mar 23, 2023Observed: 4.88 ft at 8:00AM Mar 23, 2023Observed: 4.88 ft at 9:00AM Mar 23, 2023Observed: 4.88 ft at 10:00AM Mar 23, 2023Observed: 4.99 ft at 11:00AM Mar 23, 2023Observed: 4.99 ft at 12:00PM Mar 23, 2023Observed: 4.99 ft at 1:00PM Mar 23, 2023Observed: 4.99 ft at 2:00PM Mar 23, 2023Observed: 4.99 ft at 3:00PM Mar 23, 2023Observed: 4.99 ft at 4:00PM Mar 23, 2023Observed: 4.99 ft at 5:00PM Mar 23, 2023Highest Observation: 5 ft at 6:00PM Mar 23, 2023Highest Observation: 5 ft at 7:00PM Mar 23, 2023Highest Observation: 5 ft at 8:00PM Mar 23, 2023Highest Observation: 5 ft at 9:00PM Mar 23, 2023Highest Observation: 5 ft at 10:00PM Mar 23, 2023Highest Observation: 5 ft at 11:00PM Mar 23, 2023Highest Forecast: 4.97 ft 5:00AM Mar 24, 2023Highest Forecast: 4.97 ft 11:00AM Mar 24, 2023Highest Forecast: 4.97 ft 5:00PM Mar 24, 2023Highest Forecast: 4.97 ft 11:00PM Mar 24, 2023Highest Forecast: 4.97 ft 5:00AM Mar 25, 2023Highest Forecast: 4.97 ft 11:00AM Mar 25, 2023Highest Forecast: 4.97 ft 5:00PM Mar 25, 2023Highest Forecast: 4.97 ft 11:00PM Mar 25, 2023Highest Forecast: 4.97 ft 5:00AM Mar 26, 2023Highest Forecast: 4.97 ft 11:00AM Mar 26, 2023Highest Forecast: 4.97 ft 5:00PM Mar 26, 2023Highest Forecast: 4.97 ft 11:00PM Mar 26, 2023Highest Forecast: 4.97 ft 5:00AM Mar 27, 2023Highest Forecast: 4.97 ft 11:00AM Mar 27, 2023Highest Forecast: 4.97 ft 5:00PM Mar 27, 2023Highest Forecast: 4.97 ft 11:00PM Mar 27, 2023Highest Forecast: 4.97 ft 5:00AM Mar 28, 2023Highest Forecast: 4.97 ft 11:00AM Mar 28, 2023Highest Forecast: 4.97 ft 5:00PM Mar 28, 2023Highest Forecast: 4.97 ft 11:00PM Mar 28, 2023Highest Forecast: 4.97 ft 5:00AM Mar 29, 2023Highest Forecast: 4.97 ft 11:00AM Mar 29, 2023Highest Forecast: 4.97 ft 5:00PM Mar 29, 2023Highest Forecast: 4.97 ft 11:00PM Mar 29, 2023Highest Forecast: 4.97 ft 5:00AM Mar 30, 2023Highest Forecast: 4.97 ft 11:00AM Mar 30, 2023Highest Forecast: 4.97 ft 5:00PM Mar 30, 2023Highest Forecast: 4.97 ft 11:00PM Mar 30, 2023USGS--Water Resources of the United StatesHAHW1(plotting HGIRZ) Graph Created (12:05AM Mar 24, 2023)ObservedForecast (issued 3:55PM Mar 23)Latest observed value: 5 ft at 11:00 PM PDT 23-Mar-2023.
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Tabular Data (UTC)
Tabular Data (PDT)
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Datum: Not Available
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.

NOTE: Forecasts for the Green River (WA) below Howard Hanson Dam are issued routinely year-round.

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Upstream Gauge - at Howard Hanson Reservoir Upstream Gauge Downstream Gauge Downstream Gauge - at Purification Plant
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 0
Low Stage (in feet): 0

Historic Crests
(1) 13.18 ft on 11/08/2006
(2) 12.78 ft on 01/13/2009
(3) 12.75 ft on 02/22/2012 (P)
(4) 12.75 ft on 01/19/2011 (P)
(5) 12.46 ft on 12/16/1999
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.55 ft on 04/24/2012 (P)
(2) 12.75 ft on 02/22/2012 (P)
(3) 9.69 ft on 01/30/2012 (P)
(4) 11.56 ft on 12/29/2011 (P)
(5) 10.38 ft on 05/16/2011 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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.
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Latitude: 47.283889° N, Longitude: 121.796667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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 Not Available Not Available 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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Hydrologic Resources Additional Resources
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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
National Weather Service
Seattle Weather Forecast Office
7600 Sandpoint Way NE
Seattle, WA 98115-6349
(206) 526-6087
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