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Hydrograph River at a Glance Download
Green River (WA) at Howard Hanson Reservoir Inflow Discharge (kcfs)Observed: 0.33 kcfs at 7:00PM Jul 07, 2020Observed: 0.37 kcfs at 8:00PM Jul 07, 2020Observed: 0.35 kcfs at 9:00PM Jul 07, 2020Observed: 0.39 kcfs at 10:00PM Jul 07, 2020Observed: 0.45 kcfs at 11:00PM Jul 07, 2020Observed: 0.47 kcfs at 1:00AM Jul 08, 2020Observed: 0.49 kcfs at 2:00AM Jul 08, 2020Observed: 0.47 kcfs at 3:00AM Jul 08, 2020Highest Observation: 0.51 kcfs at 4:00AM Jul 08, 2020Observed: 0.49 kcfs at 5:00AM Jul 08, 2020Observed: 0.43 kcfs at 6:00AM Jul 08, 2020Observed: 0.41 kcfs at 7:00AM Jul 08, 2020Observed: 0.41 kcfs at 8:00AM Jul 08, 2020Observed: 0.41 kcfs at 9:00AM Jul 08, 2020Observed: 0.4 kcfs at 10:00AM Jul 08, 2020Observed: 0.38 kcfs at 11:00AM Jul 08, 2020Observed: 0.38 kcfs at 12:00PM Jul 08, 2020Observed: 0.38 kcfs at 1:00PM Jul 08, 2020Observed: 0.38 kcfs at 2:00PM Jul 08, 2020Observed: 0.36 kcfs at 3:00PM Jul 08, 2020Observed: 0.36 kcfs at 4:00PM Jul 08, 2020Observed: 0.38 kcfs at 5:00PM Jul 08, 2020Observed: 0.36 kcfs at 6:00PM Jul 08, 2020Observed: 0.36 kcfs at 7:00PM Jul 08, 2020Observed: 0.36 kcfs at 8:00PM Jul 08, 2020Observed: 0.36 kcfs at 9:00PM Jul 08, 2020Observed: 0.38 kcfs at 10:00PM Jul 08, 2020Observed: 0.36 kcfs at 11:00PM Jul 08, 2020Observed: 0.36 kcfs at 1:00AM Jul 09, 2020Observed: 0.36 kcfs at 2:00AM Jul 09, 2020Observed: 0.36 kcfs at 3:00AM Jul 09, 2020Observed: 0.34 kcfs at 4:00AM Jul 09, 2020Observed: 0.34 kcfs at 5:00AM Jul 09, 2020Observed: 0.34 kcfs at 6:00AM Jul 09, 2020Observed: 0.34 kcfs at 7:00AM Jul 09, 2020Observed: 0.42 kcfs at 8:00AM Jul 09, 2020Observed: 0.34 kcfs at 9:00AM Jul 09, 2020Observed: 0.34 kcfs at 10:00AM Jul 09, 2020Observed: 0.34 kcfs at 11:00AM Jul 09, 2020Observed: 0.34 kcfs at 12:00PM Jul 09, 2020Observed: 0.34 kcfs at 1:00PM Jul 09, 2020Observed: 0.34 kcfs at 2:00PM Jul 09, 2020Observed: 0.34 kcfs at 3:00PM Jul 09, 2020Observed: 0.34 kcfs at 4:00PM Jul 09, 2020Observed: 0.34 kcfs at 5:00PM Jul 09, 2020Observed: 0.36 kcfs at 6:00PM Jul 09, 2020Observed: 0.36 kcfs at 7:00PM Jul 09, 2020Observed: 0.36 kcfs at 8:00PM Jul 09, 2020Observed: 0.34 kcfs at 9:00PM Jul 09, 2020Observed: 0.36 kcfs at 10:00PM Jul 09, 2020Observed: 0.36 kcfs at 11:00PM Jul 09, 2020Observed: 0.36 kcfs at 1:00AM Jul 10, 2020Observed: 0.34 kcfs at 2:00AM Jul 10, 2020Observed: 0.34 kcfs at 3:00AM Jul 10, 2020Observed: 0.36 kcfs at 4:00AM Jul 10, 2020Observed: 0.34 kcfs at 5:00AM Jul 10, 2020Observed: 0.34 kcfs at 6:00AM Jul 10, 2020Observed: 0.34 kcfs at 7:00AM Jul 10, 2020Observed: 0.33 kcfs at 8:00AM Jul 10, 2020Observed: 0.32 kcfs at 9:00AM Jul 10, 2020Observed: 0.34 kcfs at 10:00AM Jul 10, 2020Observed: 0.32 kcfs at 11:00AM Jul 10, 2020Observed: 0.33 kcfs at 12:00PM Jul 10, 2020Observed: 0.33 kcfs at 1:00PM Jul 10, 2020Observed: 0.25 kcfs at 2:00PM Jul 10, 2020Observed: 0.39 kcfs at 3:00PM Jul 10, 2020Observed: 0.38 kcfs at 4:00PM Jul 10, 2020Highest Forecast: 0.32 kcfs 11:00PM Jul 10, 2020Forecast: 0.31 kcfs 5:00AM Jul 11, 2020Forecast: 0.31 kcfs 11:00AM Jul 11, 2020Forecast: 0.3 kcfs 5:00PM Jul 11, 2020Forecast: 0.3 kcfs 11:00PM Jul 11, 2020Forecast: 0.3 kcfs 5:00AM Jul 12, 2020Forecast: 0.3 kcfs 11:00AM Jul 12, 2020Forecast: 0.29 kcfs 5:00PM Jul 12, 2020Forecast: 0.29 kcfs 11:00PM Jul 12, 2020Forecast: 0.29 kcfs 5:00AM Jul 13, 2020Forecast: 0.29 kcfs 11:00AM Jul 13, 2020Forecast: 0.28 kcfs 5:00PM Jul 13, 2020Forecast: 0.28 kcfs 11:00PM Jul 13, 2020Forecast: 0.28 kcfs 5:00AM Jul 14, 2020Forecast: 0.28 kcfs 11:00AM Jul 14, 2020Forecast: 0.27 kcfs 5:00PM Jul 14, 2020Forecast: 0.27 kcfs 11:00PM Jul 14, 2020Forecast: 0.27 kcfs 5:00AM Jul 15, 2020Forecast: 0.27 kcfs 11:00AM Jul 15, 2020Forecast: 0.27 kcfs 5:00PM Jul 15, 2020USACEHHDW1(plotting QIIRZ) Graph Created (6:34PM Jul 10, 2020)ObservedForecast (issued 2:41PM Jul 10)Latest observed value: 0.38 kcfs at 4:00 PM PDT 10-Jul-2020.
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Tabular Data (UTC)
Tabular Data (PDT)
XML Data
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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.

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

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

Return to Area Map
Upstream Gauge - above Twin Camp Upstream Gauge Downstream Gauge Downstream Gauge - below Howard Hanson Dam
Flood Categories (in feet)
Not Available

Historic Crests
(1) 0.00 ft on 01/31/2003
(2) 0.00 ft on 01/18/2005
(3) 0.00 ft on 01/10/2006
(4) 0.00 ft on 11/12/2008
(5) 0.00 ft on 11/06/2006
(6) 0.00 ft on 01/07/2009

(P): Preliminary values subject to further review.

Recent Crests
(1) 0.00 ft on 01/07/2009
(2) 0.00 ft on 11/12/2008
(3) 0.00 ft on 11/06/2006
(4) 0.00 ft on 01/10/2006
(5) 0.00 ft on 01/18/2005
(6) 0.00 ft on 01/31/2003

(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.
About This Location Collapse

Latitude: 47.277222° N, Longitude: 121.792222° 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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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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7600 Sandpoint Way NE
Seattle, WA 98115-6349
(206) 526-6087
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