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Hydrograph River at a Glance Download
Snake River (WA) at Lower Granite Forebay Elevation (ft)Observed: 735.19 ft at 1:00AM Sep 19, 2018Observed: 735.45 ft at 2:00AM Sep 19, 2018Observed: 735.5 ft at 3:00AM Sep 19, 2018Observed: 735.54 ft at 4:00AM Sep 19, 2018Observed: 735.74 ft at 5:00AM Sep 19, 2018Observed: 735.78 ft at 6:00AM Sep 19, 2018Observed: 735.69 ft at 7:00AM Sep 19, 2018Observed: 735.81 ft at 8:00AM Sep 19, 2018Observed: 735.76 ft at 9:00AM Sep 19, 2018Observed: 735.63 ft at 10:00AM Sep 19, 2018Observed: 735.72 ft at 11:00AM Sep 19, 2018Observed: 735.69 ft at 12:00PM Sep 19, 2018Observed: 735.6 ft at 1:00PM Sep 19, 2018Observed: 735.62 ft at 2:00PM Sep 19, 2018Observed: 735.56 ft at 3:00PM Sep 19, 2018Observed: 735.5 ft at 4:00PM Sep 19, 2018Observed: 735.5 ft at 5:00PM Sep 19, 2018Observed: 735.42 ft at 6:00PM Sep 19, 2018Observed: 735.33 ft at 7:00PM Sep 19, 2018Observed: 735.31 ft at 8:00PM Sep 19, 2018Observed: 735.24 ft at 9:00PM Sep 19, 2018Observed: 735.23 ft at 10:00PM Sep 19, 2018Observed: 735.37 ft at 11:00PM Sep 19, 2018Observed: 735.4 ft at 12:00AM Sep 20, 2018Observed: 735.54 ft at 1:00AM Sep 20, 2018Observed: 735.63 ft at 2:00AM Sep 20, 2018Observed: 735.79 ft at 3:00AM Sep 20, 2018Observed: 735.92 ft at 4:00AM Sep 20, 2018Observed: 736.06 ft at 5:00AM Sep 20, 2018Observed: 736.08 ft at 6:00AM Sep 20, 2018Observed: 736.06 ft at 7:00AM Sep 20, 2018Observed: 736.11 ft at 8:00AM Sep 20, 2018Observed: 736.03 ft at 9:00AM Sep 20, 2018Observed: 736 ft at 10:00AM Sep 20, 2018Observed: 735.98 ft at 11:00AM Sep 20, 2018Observed: 736.02 ft at 12:00PM Sep 20, 2018Observed: 735.91 ft at 1:00PM Sep 20, 2018Observed: 735.95 ft at 2:00PM Sep 20, 2018Observed: 735.99 ft at 3:00PM Sep 20, 2018Observed: 735.88 ft at 4:00PM Sep 20, 2018Observed: 735.85 ft at 5:00PM Sep 20, 2018Observed: 735.85 ft at 6:00PM Sep 20, 2018Observed: 735.79 ft at 7:00PM Sep 20, 2018Observed: 735.72 ft at 8:00PM Sep 20, 2018Observed: 735.7 ft at 9:00PM Sep 20, 2018Observed: 735.71 ft at 10:00PM Sep 20, 2018Observed: 735.73 ft at 11:00PM Sep 20, 2018Observed: 735.74 ft at 12:00AM Sep 21, 2018Observed: 735.81 ft at 1:00AM Sep 21, 2018Observed: 735.88 ft at 2:00AM Sep 21, 2018Observed: 735.91 ft at 3:00AM Sep 21, 2018Observed: 735.96 ft at 4:00AM Sep 21, 2018Observed: 736.05 ft at 5:00AM Sep 21, 2018Observed: 736 ft at 6:00AM Sep 21, 2018Observed: 735.94 ft at 9:00AM Sep 21, 2018Observed: 735.82 ft at 10:00AM Sep 21, 2018Observed: 735.87 ft at 11:00AM Sep 21, 2018Observed: 735.89 ft at 12:00PM Sep 21, 2018Observed: 735.82 ft at 1:00PM Sep 21, 2018Observed: 735.85 ft at 2:00PM Sep 21, 2018Observed: 735.83 ft at 3:00PM Sep 21, 2018Observed: 735.78 ft at 4:00PM Sep 21, 2018Observed: 735.74 ft at 5:00PM Sep 21, 2018Observed: 735.72 ft at 6:00PM Sep 21, 2018Observed: 735.67 ft at 7:00PM Sep 21, 2018Observed: 735.62 ft at 8:00PM Sep 21, 2018Observed: 735.58 ft at 9:00PM Sep 21, 2018Observed: 735.59 ft at 10:00PM Sep 21, 2018Observed: 735.61 ft at 11:00PM Sep 21, 2018Observed: 735.59 ft at 12:00AM Sep 22, 2018Observed: 735.61 ft at 1:00AM Sep 22, 2018Observed: 735.71 ft at 2:00AM Sep 22, 2018Observed: 735.65 ft at 3:00AM Sep 22, 2018Observed: 735.64 ft at 4:00AM Sep 22, 2018Observed: 735.79 ft at 5:00AM Sep 22, 2018Observed: 735.8 ft at 6:00AM Sep 22, 2018Observed: 735.82 ft at 7:00AM Sep 22, 2018Observed: 735.9 ft at 8:00AM Sep 22, 2018Observed: 735.96 ft at 9:00AM Sep 22, 2018Observed: 736 ft at 10:00AM Sep 22, 2018Observed: 736.1 ft at 11:00AM Sep 22, 2018Observed: 736.19 ft at 12:00PM Sep 22, 2018Observed: 736.16 ft at 1:00PM Sep 22, 2018Observed: 736.13 ft at 2:00PM Sep 22, 2018Observed: 736.11 ft at 3:00PM Sep 22, 2018Observed: 736 ft at 4:00PM Sep 22, 2018Observed: 735.85 ft at 5:00PM Sep 22, 2018Observed: 735.81 ft at 6:00PM Sep 22, 2018Observed: 735.85 ft at 7:00PM Sep 22, 2018Observed: 735.69 ft at 8:00PM Sep 22, 2018Observed: 735.75 ft at 9:00PM Sep 22, 2018Observed: 735.84 ft at 10:00PM Sep 22, 2018Observed: 735.75 ft at 11:00PM Sep 22, 2018Observed: 735.79 ft at 12:00AM Sep 23, 2018Observed: 735.86 ft at 1:00AM Sep 23, 2018Observed: 735.82 ft at 2:00AM Sep 23, 2018Observed: 735.82 ft at 3:00AM Sep 23, 2018Observed: 735.89 ft at 4:00AM Sep 23, 2018Observed: 735.88 ft at 5:00AM Sep 23, 2018Observed: 735.86 ft at 6:00AM Sep 23, 2018Observed: 735.95 ft at 7:00AM Sep 23, 2018Observed: 736.04 ft at 8:00AM Sep 23, 2018Observed: 736.03 ft at 9:00AM Sep 23, 2018Observed: 736.11 ft at 10:00AM Sep 23, 2018Observed: 736.22 ft at 11:00AM Sep 23, 2018Observed: 736.23 ft at 12:00PM Sep 23, 2018Observed: 736.17 ft at 1:00PM Sep 23, 2018Observed: 736.26 ft at 2:00PM Sep 23, 2018Observed: 736.18 ft at 3:00PM Sep 23, 2018Observed: 736.11 ft at 4:00PM Sep 23, 2018Observed: 736.13 ft at 5:00PM Sep 23, 2018Observed: 735.94 ft at 6:00PM Sep 23, 2018Observed: 735.92 ft at 7:00PM Sep 23, 2018Observed: 735.9 ft at 8:00PM Sep 23, 2018Observed: 735.79 ft at 9:00PM Sep 23, 2018Observed: 735.68 ft at 10:00PM Sep 23, 2018Observed: 735.62 ft at 11:00PM Sep 23, 2018Observed: 735.55 ft at 12:00AM Sep 24, 2018Observed: 735.62 ft at 1:00AM Sep 24, 2018Observed: 735.6 ft at 2:00AM Sep 24, 2018Observed: 735.67 ft at 3:00AM Sep 24, 2018Observed: 735.84 ft at 4:00AM Sep 24, 2018Observed: 735.86 ft at 5:00AM Sep 24, 2018Observed: 735.92 ft at 6:00AM Sep 24, 2018Observed: 736 ft at 7:00AM Sep 24, 2018Observed: 736.04 ft at 8:00AM Sep 24, 2018Observed: 736.08 ft at 9:00AM Sep 24, 2018Observed: 736.16 ft at 10:00AM Sep 24, 2018Observed: 736.21 ft at 11:00AM Sep 24, 2018Observed: 736.25 ft at 12:00PM Sep 24, 2018Observed: 736.28 ft at 1:00PM Sep 24, 2018Observed: 736.26 ft at 2:00PM Sep 24, 2018Observed: 736.22 ft at 3:00PM Sep 24, 2018Observed: 736.22 ft at 4:00PM Sep 24, 2018Observed: 736.14 ft at 5:00PM Sep 24, 2018Observed: 736.06 ft at 6:00PM Sep 24, 2018Observed: 736.01 ft at 7:00PM Sep 24, 2018Observed: 735.92 ft at 8:00PM Sep 24, 2018Observed: 735.83 ft at 9:00PM Sep 24, 2018Observed: 735.67 ft at 10:00PM Sep 24, 2018Observed: 735.83 ft at 11:00PM Sep 24, 2018Observed: 735.75 ft at 12:00AM Sep 25, 2018Observed: 735.76 ft at 1:00AM Sep 25, 2018Observed: 735.92 ft at 2:00AM Sep 25, 2018Observed: 735.93 ft at 3:00AM Sep 25, 2018Observed: 735.99 ft at 4:00AM Sep 25, 2018Observed: 736.09 ft at 5:00AM Sep 25, 2018Observed: 736.15 ft at 6:00AM Sep 25, 2018Observed: 736.21 ft at 7:00AM Sep 25, 2018Observed: 736.27 ft at 8:00AM Sep 25, 2018Observed: 736.36 ft at 9:00AM Sep 25, 2018Observed: 736.36 ft at 10:00AM Sep 25, 2018Observed: 736.33 ft at 11:00AM Sep 25, 2018Highest Observation: 736.4 ft at 12:00PM Sep 25, 2018Observed: 736.39 ft at 1:00PM Sep 25, 2018Observed: 736.3 ft at 2:00PM Sep 25, 2018Observed: 736.33 ft at 3:00PM Sep 25, 2018Observed: 736.3 ft at 4:00PM Sep 25, 2018Observed: 736.22 ft at 5:00PM Sep 25, 2018Observed: 736.18 ft at 6:00PM Sep 25, 2018Observed: 736.12 ft at 7:00PM Sep 25, 2018Observed: 735.96 ft at 8:00PM Sep 25, 2018Observed: 735.89 ft at 9:00PM Sep 25, 2018Observed: 735.82 ft at 10:00PM Sep 25, 2018Observed: 735.91 ft at 11:00PM Sep 25, 2018Highest Forecast: 736.33 ft 5:00AM Sep 26, 2018Highest Forecast: 736.33 ft 11:00AM Sep 26, 2018Highest Forecast: 736.33 ft 5:00PM Sep 26, 2018Highest Forecast: 736.33 ft 11:00PM Sep 26, 2018Highest Forecast: 736.33 ft 5:00AM Sep 27, 2018Highest Forecast: 736.33 ft 11:00AM Sep 27, 2018Highest Forecast: 736.33 ft 5:00PM Sep 27, 2018Highest Forecast: 736.33 ft 11:00PM Sep 27, 2018Highest Forecast: 736.33 ft 5:00AM Sep 28, 2018Highest Forecast: 736.33 ft 11:00AM Sep 28, 2018Highest Forecast: 736.33 ft 5:00PM Sep 28, 2018Highest Forecast: 736.33 ft 11:00PM Sep 28, 2018Highest Forecast: 736.33 ft 5:00AM Sep 29, 2018Highest Forecast: 736.33 ft 11:00AM Sep 29, 2018Highest Forecast: 736.33 ft 5:00PM Sep 29, 2018Highest Forecast: 736.33 ft 11:00PM Sep 29, 2018Highest Forecast: 736.33 ft 5:00AM Sep 30, 2018Highest Forecast: 736.33 ft 11:00AM Sep 30, 2018Highest Forecast: 736.33 ft 5:00PM Sep 30, 2018Highest Forecast: 736.33 ft 11:00PM Sep 30, 2018Highest Forecast: 736.33 ft 5:00AM Oct 01, 2018Highest Forecast: 736.33 ft 11:00AM Oct 01, 2018Highest Forecast: 736.33 ft 5:00PM Oct 01, 2018Highest Forecast: 736.33 ft 11:00PM Oct 01, 2018Highest Forecast: 736.33 ft 5:00AM Oct 02, 2018Highest Forecast: 736.33 ft 11:00AM Oct 02, 2018Highest Forecast: 736.33 ft 5:00PM Oct 02, 2018Highest Forecast: 736.33 ft 11:00PM Oct 02, 2018LGDW1(plotting HFIRX) Graph Created (12:01AM Sep 26, 2018)ObservedForecast (issued 4:37PM Sep 25)Latest observed value: 735.91 ft at 11:00 PM PDT 25-Sep-2018.
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading affected by reservoir operations.

NOTE: Forecasts for the Snake River (WA) at Lower Granite are issued routinely year-round.

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Upstream Gauge - near Anatone Upstream Gauge Downstream Gauge Downstream Gauge - at Little Goose Dam
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
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:9
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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: 46.650000° N, Longitude: 117.410000° 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 NULL NULL  

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
National Weather Service
Spokane Weather Forecast Office
2601 N. Rambo Rd.
Spokane, WA 99224
(509) 244-0110
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