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Hydrograph River at a Glance Download
Snake River (WA) at Lower Granite Forebay Elevation (ft)Observed: 735.27 ft at 12:00PM May 19, 2022Observed: 735.11 ft at 1:00PM May 19, 2022Observed: 735.08 ft at 2:00PM May 19, 2022Observed: 734.98 ft at 3:00PM May 19, 2022Observed: 734.91 ft at 4:00PM May 19, 2022Observed: 734.84 ft at 5:00PM May 19, 2022Observed: 734.81 ft at 6:00PM May 19, 2022Observed: 734.77 ft at 7:00PM May 19, 2022Observed: 734.74 ft at 8:00PM May 19, 2022Observed: 734.74 ft at 9:00PM May 19, 2022Observed: 734.72 ft at 10:00PM May 19, 2022Observed: 734.73 ft at 11:00PM May 19, 2022Observed: 734.81 ft at 11:59PM May 19, 2022Observed: 734.81 ft at 12:00AM May 20, 2022Observed: 734.84 ft at 1:00AM May 20, 2022Observed: 734.89 ft at 2:00AM May 20, 2022Observed: 734.93 ft at 3:00AM May 20, 2022Observed: 735 ft at 4:00AM May 20, 2022Observed: 734.97 ft at 5:00AM May 20, 2022Observed: 734.97 ft at 6:00AM May 20, 2022Observed: 734.95 ft at 7:00AM May 20, 2022Observed: 734.9 ft at 8:00AM May 20, 2022Observed: 734.89 ft at 9:00AM May 20, 2022Observed: 734.88 ft at 10:00AM May 20, 2022Observed: 734.84 ft at 11:00AM May 20, 2022Observed: 734.81 ft at 12:00PM May 20, 2022Observed: 734.75 ft at 1:00PM May 20, 2022Observed: 734.73 ft at 2:00PM May 20, 2022Observed: 734.66 ft at 3:00PM May 20, 2022Observed: 734.66 ft at 4:00PM May 20, 2022Observed: 734.63 ft at 5:00PM May 20, 2022Observed: 734.62 ft at 6:00PM May 20, 2022Observed: 734.61 ft at 7:00PM May 20, 2022Observed: 734.56 ft at 8:00PM May 20, 2022Observed: 734.55 ft at 9:00PM May 20, 2022Observed: 734.55 ft at 10:00PM May 20, 2022Observed: 734.55 ft at 11:00PM May 20, 2022Observed: 734.56 ft at 11:59PM May 20, 2022Observed: 734.56 ft at 12:00AM May 21, 2022Observed: 734.57 ft at 1:00AM May 21, 2022Observed: 734.57 ft at 2:00AM May 21, 2022Observed: 734.55 ft at 3:00AM May 21, 2022Observed: 734.59 ft at 4:00AM May 21, 2022Observed: 734.54 ft at 5:00AM May 21, 2022Observed: 734.49 ft at 6:00AM May 21, 2022Observed: 734.49 ft at 7:00AM May 21, 2022Observed: 734.51 ft at 8:00AM May 21, 2022Observed: 734.51 ft at 9:00AM May 21, 2022Observed: 734.54 ft at 10:00AM May 21, 2022Observed: 734.58 ft at 11:00AM May 21, 2022Observed: 734.62 ft at 12:00PM May 21, 2022Observed: 734.66 ft at 1:00PM May 21, 2022Observed: 734.67 ft at 2:00PM May 21, 2022Observed: 734.68 ft at 3:00PM May 21, 2022Observed: 734.66 ft at 4:00PM May 21, 2022Observed: 734.7 ft at 5:00PM May 21, 2022Observed: 734.73 ft at 6:00PM May 21, 2022Observed: 734.71 ft at 7:00PM May 21, 2022Observed: 734.73 ft at 8:00PM May 21, 2022Observed: 734.8 ft at 9:00PM May 21, 2022Observed: 734.85 ft at 10:00PM May 21, 2022Observed: 734.9 ft at 11:00PM May 21, 2022Observed: 734.98 ft at 11:59PM May 21, 2022Observed: 734.99 ft at 12:00AM May 22, 2022Observed: 735.05 ft at 1:00AM May 22, 2022Observed: 735.1 ft at 2:00AM May 22, 2022Observed: 735.15 ft at 3:00AM May 22, 2022Observed: 735.21 ft at 4:00AM May 22, 2022Observed: 735.23 ft at 5:00AM May 22, 2022Observed: 735.24 ft at 6:00AM May 22, 2022Observed: 735.27 ft at 7:00AM May 22, 2022Observed: 735.28 ft at 8:00AM May 22, 2022Highest Observation: 735.29 ft at 9:00AM May 22, 2022Observed: 735.25 ft at 10:00AM May 22, 2022Observed: 735.23 ft at 11:00AM May 22, 2022Observed: 735.21 ft at 12:00PM May 22, 2022Observed: 735.07 ft at 1:00PM May 22, 2022Observed: 735.09 ft at 2:00PM May 22, 2022Observed: 735.03 ft at 3:00PM May 22, 2022Observed: 734.96 ft at 4:00PM May 22, 2022Observed: 734.91 ft at 5:00PM May 22, 2022Observed: 734.87 ft at 6:00PM May 22, 2022Observed: 734.81 ft at 7:00PM May 22, 2022Observed: 734.79 ft at 8:00PM May 22, 2022Observed: 734.75 ft at 9:00PM May 22, 2022Observed: 734.73 ft at 10:00PM May 22, 2022Observed: 734.75 ft at 11:00PM May 22, 2022Observed: 734.74 ft at 11:59PM May 22, 2022Observed: 734.74 ft at 12:00AM May 23, 2022Observed: 734.74 ft at 1:00AM May 23, 2022Observed: 734.74 ft at 2:00AM May 23, 2022Observed: 734.7 ft at 3:00AM May 23, 2022Observed: 734.7 ft at 4:00AM May 23, 2022Observed: 734.64 ft at 5:00AM May 23, 2022Observed: 734.62 ft at 6:00AM May 23, 2022Observed: 734.63 ft at 7:00AM May 23, 2022Observed: 734.57 ft at 8:00AM May 23, 2022Observed: 734.53 ft at 9:00AM May 23, 2022Observed: 734.51 ft at 10:00AM May 23, 2022Observed: 734.49 ft at 11:00AM May 23, 2022Observed: 734.49 ft at 12:00PM May 23, 2022Observed: 734.52 ft at 1:00PM May 23, 2022Observed: 734.55 ft at 2:00PM May 23, 2022Observed: 734.58 ft at 3:00PM May 23, 2022Observed: 734.63 ft at 4:00PM May 23, 2022Observed: 734.66 ft at 5:00PM May 23, 2022Observed: 734.68 ft at 6:00PM May 23, 2022Observed: 734.72 ft at 7:00PM May 23, 2022Observed: 734.75 ft at 8:00PM May 23, 2022Observed: 734.79 ft at 9:00PM May 23, 2022Observed: 734.83 ft at 10:00PM May 23, 2022Observed: 734.84 ft at 11:00PM May 23, 2022Observed: 734.88 ft at 11:59PM May 23, 2022Observed: 734.88 ft at 12:00AM May 24, 2022Observed: 734.89 ft at 1:00AM May 24, 2022Observed: 734.85 ft at 2:00AM May 24, 2022Observed: 734.84 ft at 3:00AM May 24, 2022Observed: 734.74 ft at 4:00AM May 24, 2022Observed: 734.77 ft at 5:00AM May 24, 2022Observed: 734.7 ft at 6:00AM May 24, 2022Observed: 734.66 ft at 7:00AM May 24, 2022Observed: 734.68 ft at 8:00AM May 24, 2022Observed: 734.64 ft at 9:00AM May 24, 2022Observed: 734.66 ft at 10:00AM May 24, 2022Observed: 734.67 ft at 11:00AM May 24, 2022Observed: 734.71 ft at 12:00PM May 24, 2022Observed: 734.69 ft at 1:00PM May 24, 2022Observed: 734.73 ft at 2:00PM May 24, 2022Observed: 734.73 ft at 3:00PM May 24, 2022Observed: 734.74 ft at 4:00PM May 24, 2022Observed: 734.76 ft at 5:00PM May 24, 2022Observed: 734.76 ft at 6:00PM May 24, 2022Observed: 734.76 ft at 7:00PM May 24, 2022Observed: 734.81 ft at 8:00PM May 24, 2022Observed: 734.83 ft at 9:00PM May 24, 2022Observed: 734.85 ft at 10:00PM May 24, 2022Observed: 734.86 ft at 11:00PM May 24, 2022Observed: 734.87 ft at 11:59PM May 24, 2022Observed: 734.87 ft at 12:00AM May 25, 2022Observed: 734.9 ft at 1:00AM May 25, 2022Observed: 734.91 ft at 2:00AM May 25, 2022Observed: 734.9 ft at 3:00AM May 25, 2022Observed: 734.94 ft at 4:00AM May 25, 2022Observed: 734.88 ft at 5:00AM May 25, 2022Observed: 734.85 ft at 6:00AM May 25, 2022Observed: 734.83 ft at 7:00AM May 25, 2022Observed: 734.76 ft at 8:00AM May 25, 2022Observed: 734.74 ft at 9:00AM May 25, 2022Observed: 734.73 ft at 10:00AM May 25, 2022Observed: 734.7 ft at 11:00AM May 25, 2022Observed: 734.7 ft at 12:00PM May 25, 2022Observed: 734.68 ft at 1:00PM May 25, 2022Observed: 734.67 ft at 2:00PM May 25, 2022Observed: 734.66 ft at 3:00PM May 25, 2022Observed: 734.64 ft at 4:00PM May 25, 2022Observed: 734.6 ft at 5:00PM May 25, 2022Observed: 734.63 ft at 6:00PM May 25, 2022Observed: 734.62 ft at 7:00PM May 25, 2022Observed: 734.67 ft at 8:00PM May 25, 2022Observed: 734.74 ft at 9:00PM May 25, 2022Observed: 734.8 ft at 10:00PM May 25, 2022Observed: 734.87 ft at 11:00PM May 25, 2022Observed: 734.92 ft at 11:59PM May 25, 2022Observed: 734.92 ft at 12:00AM May 26, 2022Observed: 735.01 ft at 1:00AM May 26, 2022Observed: 735.04 ft at 2:00AM May 26, 2022Observed: 735.05 ft at 3:00AM May 26, 2022Observed: 735.16 ft at 4:00AM May 26, 2022Observed: 735.11 ft at 5:00AM May 26, 2022Observed: 735.1 ft at 6:00AM May 26, 2022Observed: 735.09 ft at 7:00AM May 26, 2022Observed: 735.02 ft at 8:00AM May 26, 2022Observed: 735.01 ft at 9:00AM May 26, 2022Observed: 734.94 ft at 10:00AM May 26, 2022Highest Forecast: 734.7 ft 5:00PM May 26, 2022Highest Forecast: 734.7 ft 11:00PM May 26, 2022Highest Forecast: 734.7 ft 5:00AM May 27, 2022Highest Forecast: 734.7 ft 11:00AM May 27, 2022Highest Forecast: 734.7 ft 5:00PM May 27, 2022Highest Forecast: 734.7 ft 11:00PM May 27, 2022Highest Forecast: 734.7 ft 5:00AM May 28, 2022Highest Forecast: 734.7 ft 11:00AM May 28, 2022Highest Forecast: 734.7 ft 5:00PM May 28, 2022Highest Forecast: 734.7 ft 11:00PM May 28, 2022Highest Forecast: 734.7 ft 5:00AM May 29, 2022Highest Forecast: 734.7 ft 11:00AM May 29, 2022Highest Forecast: 734.7 ft 5:00PM May 29, 2022Highest Forecast: 734.7 ft 11:00PM May 29, 2022Highest Forecast: 734.7 ft 5:00AM May 30, 2022Highest Forecast: 734.7 ft 11:00AM May 30, 2022Highest Forecast: 734.7 ft 5:00PM May 30, 2022Highest Forecast: 734.7 ft 11:00PM May 30, 2022Highest Forecast: 734.7 ft 5:00AM May 31, 2022Highest Forecast: 734.7 ft 11:00AM May 31, 2022Highest Forecast: 734.7 ft 5:00PM May 31, 2022Highest Forecast: 734.7 ft 11:00PM May 31, 2022Highest Forecast: 734.7 ft 5:00AM Jun 01, 2022Highest Forecast: 734.7 ft 11:00AM Jun 01, 2022Highest Forecast: 734.7 ft 5:00PM Jun 01, 2022Highest Forecast: 734.7 ft 11:00PM Jun 01, 2022Highest Forecast: 734.7 ft 5:00AM Jun 02, 2022Highest Forecast: 734.7 ft 11:00AM Jun 02, 2022US Army Corps of EngineersLGDW1(plotting HFIRX) Graph Created (11:01AM May 26, 2022)ObservedForecast (issued 3:13PM May 25)Latest observed value: 734.94 ft at 10:00 AM PDT 26-May-2022.
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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
(1) 737.29 ft on 01/01/2017
(2) 737.28 ft on 08/02/2021 (P)
(3) 737.25 ft on 09/19/2020
(4) 737.23 ft on 09/18/2019
(5) 736.99 ft on 03/01/2018

(P): Preliminary values subject to further review.

Recent Crests
(1) 737.28 ft on 08/02/2021 (P)
(2) 737.25 ft on 09/19/2020
(3) 737.23 ft on 09/18/2019
(4) 736.99 ft on 03/01/2018
(5) 737.29 ft on 01/01/2017

(P): Preliminary values subject to further review.

Low Water Records
(1) 734.96 ft on 05/19/2021
Zoom Level:9
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.
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
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Spokane Weather Forecast Office
2601 N. Rambo Rd.
Spokane, WA 99224
(509) 244-0110
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