Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Area Radar
    Spokane Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
    Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Web Portal Changes:

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
Snake River (WA) at Lower Granite Forebay Elevation (ft)Observed: 733.68 ft at 2:00PM Apr 11, 2024Observed: 733.71 ft at 3:00PM Apr 11, 2024Observed: 733.71 ft at 4:00PM Apr 11, 2024Observed: 733.7 ft at 5:00PM Apr 11, 2024Observed: 733.67 ft at 6:00PM Apr 11, 2024Observed: 733.65 ft at 7:00PM Apr 11, 2024Observed: 733.63 ft at 8:00PM Apr 11, 2024Observed: 733.59 ft at 9:00PM Apr 11, 2024Observed: 733.59 ft at 10:00PM Apr 11, 2024Observed: 733.63 ft at 11:00PM Apr 11, 2024Observed: 733.66 ft at 11:59PM Apr 11, 2024Observed: 733.68 ft at 12:00AM Apr 12, 2024Observed: 733.64 ft at 1:00AM Apr 12, 2024Observed: 733.64 ft at 2:00AM Apr 12, 2024Observed: 733.68 ft at 3:00AM Apr 12, 2024Observed: 733.69 ft at 4:00AM Apr 12, 2024Observed: 733.69 ft at 5:00AM Apr 12, 2024Observed: 733.71 ft at 6:00AM Apr 12, 2024Observed: 733.71 ft at 7:00AM Apr 12, 2024Observed: 733.69 ft at 8:00AM Apr 12, 2024Observed: 733.69 ft at 9:00AM Apr 12, 2024Observed: 733.7 ft at 10:00AM Apr 12, 2024Observed: 733.7 ft at 11:00AM Apr 12, 2024Observed: 733.69 ft at 12:00PM Apr 12, 2024Observed: 733.69 ft at 1:00PM Apr 12, 2024Observed: 733.69 ft at 2:00PM Apr 12, 2024Observed: 733.7 ft at 3:00PM Apr 12, 2024Observed: 733.69 ft at 4:00PM Apr 12, 2024Observed: 733.71 ft at 5:00PM Apr 12, 2024Observed: 733.7 ft at 6:00PM Apr 12, 2024Observed: 733.69 ft at 7:00PM Apr 12, 2024Observed: 733.7 ft at 8:00PM Apr 12, 2024Observed: 733.71 ft at 9:00PM Apr 12, 2024Observed: 733.76 ft at 10:00PM Apr 12, 2024Observed: 733.74 ft at 11:00PM Apr 12, 2024Observed: 733.74 ft at 11:59PM Apr 12, 2024Observed: 733.74 ft at 12:00AM Apr 13, 2024Observed: 733.76 ft at 1:00AM Apr 13, 2024Observed: 733.76 ft at 2:00AM Apr 13, 2024Observed: 733.77 ft at 3:00AM Apr 13, 2024Observed: 733.78 ft at 4:00AM Apr 13, 2024Observed: 733.79 ft at 5:00AM Apr 13, 2024Observed: 733.77 ft at 6:00AM Apr 13, 2024Observed: 733.74 ft at 7:00AM Apr 13, 2024Observed: 733.72 ft at 8:00AM Apr 13, 2024Observed: 733.65 ft at 9:00AM Apr 13, 2024Observed: 733.6 ft at 10:00AM Apr 13, 2024Observed: 733.59 ft at 11:00AM Apr 13, 2024Observed: 733.56 ft at 12:00PM Apr 13, 2024Observed: 733.56 ft at 1:00PM Apr 13, 2024Observed: 733.57 ft at 2:00PM Apr 13, 2024Observed: 733.55 ft at 3:00PM Apr 13, 2024Observed: 733.55 ft at 4:00PM Apr 13, 2024Observed: 733.56 ft at 5:00PM Apr 13, 2024Observed: 733.54 ft at 6:00PM Apr 13, 2024Observed: 733.57 ft at 7:00PM Apr 13, 2024Observed: 733.6 ft at 8:00PM Apr 13, 2024Observed: 733.63 ft at 9:00PM Apr 13, 2024Observed: 733.67 ft at 10:00PM Apr 13, 2024Observed: 733.7 ft at 11:00PM Apr 13, 2024Observed: 733.71 ft at 11:59PM Apr 13, 2024Observed: 733.74 ft at 12:00AM Apr 14, 2024Observed: 733.77 ft at 1:00AM Apr 14, 2024Observed: 733.81 ft at 2:00AM Apr 14, 2024Observed: 733.79 ft at 3:00AM Apr 14, 2024Observed: 733.83 ft at 4:00AM Apr 14, 2024Observed: 733.79 ft at 5:00AM Apr 14, 2024Observed: 733.81 ft at 6:00AM Apr 14, 2024Observed: 733.83 ft at 7:00AM Apr 14, 2024Observed: 733.83 ft at 8:00AM Apr 14, 2024Observed: 733.82 ft at 9:00AM Apr 14, 2024Observed: 733.83 ft at 10:00AM Apr 14, 2024Observed: 733.74 ft at 11:00AM Apr 14, 2024Observed: 733.75 ft at 12:00PM Apr 14, 2024Observed: 733.72 ft at 1:00PM Apr 14, 2024Observed: 733.71 ft at 2:00PM Apr 14, 2024Observed: 733.69 ft at 3:00PM Apr 14, 2024Observed: 733.62 ft at 4:00PM Apr 14, 2024Observed: 733.63 ft at 5:00PM Apr 14, 2024Observed: 733.66 ft at 6:00PM Apr 14, 2024Observed: 733.67 ft at 7:00PM Apr 14, 2024Observed: 733.71 ft at 8:00PM Apr 14, 2024Observed: 733.73 ft at 9:00PM Apr 14, 2024Observed: 733.74 ft at 11:59PM Apr 14, 2024Observed: 733.75 ft at 12:00AM Apr 15, 2024Observed: 733.78 ft at 1:00AM Apr 15, 2024Observed: 733.85 ft at 2:00AM Apr 15, 2024Observed: 733.84 ft at 3:00AM Apr 15, 2024Observed: 733.88 ft at 4:00AM Apr 15, 2024Observed: 733.89 ft at 5:00AM Apr 15, 2024Observed: 733.89 ft at 6:00AM Apr 15, 2024Observed: 733.92 ft at 7:00AM Apr 15, 2024Observed: 733.93 ft at 8:00AM Apr 15, 2024Observed: 733.93 ft at 9:00AM Apr 15, 2024Observed: 733.98 ft at 10:00AM Apr 15, 2024Observed: 733.96 ft at 11:00AM Apr 15, 2024Observed: 733.9 ft at 12:00PM Apr 15, 2024Observed: 733.94 ft at 1:00PM Apr 15, 2024Observed: 733.83 ft at 2:00PM Apr 15, 2024Observed: 733.89 ft at 3:00PM Apr 15, 2024Observed: 733.91 ft at 4:00PM Apr 15, 2024Observed: 733.92 ft at 5:00PM Apr 15, 2024Observed: 733.95 ft at 6:00PM Apr 15, 2024Observed: 734.01 ft at 7:00PM Apr 15, 2024Observed: 734.04 ft at 8:00PM Apr 15, 2024Observed: 734.05 ft at 9:00PM Apr 15, 2024Observed: 734.1 ft at 10:00PM Apr 15, 2024Highest Observation: 734.18 ft at 11:00PM Apr 15, 2024Observed: 734.16 ft at 11:59PM Apr 15, 2024Observed: 734.16 ft at 12:00AM Apr 16, 2024Observed: 734.12 ft at 1:00AM Apr 16, 2024Observed: 734.12 ft at 2:00AM Apr 16, 2024Observed: 734.09 ft at 3:00AM Apr 16, 2024Observed: 734.03 ft at 5:00AM Apr 16, 2024Observed: 733.98 ft at 6:00AM Apr 16, 2024Observed: 734 ft at 7:00AM Apr 16, 2024Observed: 734.01 ft at 8:00AM Apr 16, 2024Observed: 733.96 ft at 9:00AM Apr 16, 2024Observed: 733.93 ft at 10:00AM Apr 16, 2024Observed: 733.95 ft at 11:00AM Apr 16, 2024Observed: 733.95 ft at 12:00PM Apr 16, 2024Observed: 733.9 ft at 1:00PM Apr 16, 2024Observed: 733.91 ft at 2:00PM Apr 16, 2024Observed: 733.91 ft at 3:00PM Apr 16, 2024Observed: 733.89 ft at 4:00PM Apr 16, 2024Observed: 733.89 ft at 5:00PM Apr 16, 2024Observed: 733.92 ft at 6:00PM Apr 16, 2024Observed: 733.9 ft at 7:00PM Apr 16, 2024Observed: 733.9 ft at 8:00PM Apr 16, 2024Observed: 733.9 ft at 9:00PM Apr 16, 2024Observed: 733.88 ft at 10:00PM Apr 16, 2024Observed: 733.69 ft at 11:00PM Apr 16, 2024Observed: 733.61 ft at 11:59PM Apr 16, 2024Observed: 733.63 ft at 12:00AM Apr 17, 2024Observed: 733.65 ft at 1:00AM Apr 17, 2024Observed: 733.57 ft at 2:00AM Apr 17, 2024Observed: 733.61 ft at 3:00AM Apr 17, 2024Observed: 733.65 ft at 4:00AM Apr 17, 2024Observed: 733.65 ft at 5:00AM Apr 17, 2024Observed: 733.68 ft at 6:00AM Apr 17, 2024Observed: 733.71 ft at 7:00AM Apr 17, 2024Observed: 733.7 ft at 8:00AM Apr 17, 2024Observed: 733.73 ft at 9:00AM Apr 17, 2024Observed: 733.69 ft at 10:00AM Apr 17, 2024Observed: 733.69 ft at 11:00AM Apr 17, 2024Observed: 733.66 ft at 12:00PM Apr 17, 2024Observed: 733.66 ft at 1:00PM Apr 17, 2024Observed: 733.67 ft at 2:00PM Apr 17, 2024Observed: 733.72 ft at 3:00PM Apr 17, 2024Observed: 733.71 ft at 4:00PM Apr 17, 2024Observed: 733.72 ft at 5:00PM Apr 17, 2024Observed: 733.72 ft at 6:00PM Apr 17, 2024Observed: 733.72 ft at 7:00PM Apr 17, 2024Observed: 733.71 ft at 8:00PM Apr 17, 2024Observed: 733.67 ft at 9:00PM Apr 17, 2024Observed: 733.65 ft at 10:00PM Apr 17, 2024Observed: 733.63 ft at 11:00PM Apr 17, 2024Observed: 733.62 ft at 11:59PM Apr 17, 2024Observed: 733.63 ft at 12:00AM Apr 18, 2024Observed: 733.65 ft at 1:00AM Apr 18, 2024Observed: 733.65 ft at 2:00AM Apr 18, 2024Observed: 733.65 ft at 3:00AM Apr 18, 2024Observed: 733.72 ft at 4:00AM Apr 18, 2024Observed: 733.68 ft at 5:00AM Apr 18, 2024Observed: 733.71 ft at 6:00AM Apr 18, 2024Observed: 733.72 ft at 7:00AM Apr 18, 2024Observed: 733.74 ft at 8:00AM Apr 18, 2024Observed: 733.74 ft at 9:00AM Apr 18, 2024Observed: 733.68 ft at 10:00AM Apr 18, 2024Observed: 733.67 ft at 11:00AM Apr 18, 2024Observed: 733.72 ft at 12:00PM Apr 18, 2024Highest Forecast: 733.68 ft 5:00PM Apr 18, 2024Highest Forecast: 733.68 ft 11:00PM Apr 18, 2024Highest Forecast: 733.68 ft 5:00AM Apr 19, 2024Highest Forecast: 733.68 ft 11:00AM Apr 19, 2024Highest Forecast: 733.68 ft 5:00PM Apr 19, 2024Highest Forecast: 733.68 ft 11:00PM Apr 19, 2024Highest Forecast: 733.68 ft 5:00AM Apr 20, 2024Highest Forecast: 733.68 ft 11:00AM Apr 20, 2024Highest Forecast: 733.68 ft 5:00PM Apr 20, 2024Highest Forecast: 733.68 ft 11:00PM Apr 20, 2024Highest Forecast: 733.68 ft 5:00AM Apr 21, 2024Highest Forecast: 733.68 ft 11:00AM Apr 21, 2024Highest Forecast: 733.68 ft 5:00PM Apr 21, 2024Highest Forecast: 733.68 ft 11:00PM Apr 21, 2024Highest Forecast: 733.68 ft 5:00AM Apr 22, 2024Highest Forecast: 733.68 ft 11:00AM Apr 22, 2024Highest Forecast: 733.68 ft 5:00PM Apr 22, 2024Highest Forecast: 733.68 ft 11:00PM Apr 22, 2024Highest Forecast: 733.68 ft 5:00AM Apr 23, 2024Highest Forecast: 733.68 ft 11:00AM Apr 23, 2024Highest Forecast: 733.68 ft 5:00PM Apr 23, 2024Highest Forecast: 733.68 ft 11:00PM Apr 23, 2024Highest Forecast: 733.68 ft 5:00AM Apr 24, 2024Highest Forecast: 733.68 ft 11:00AM Apr 24, 2024Highest Forecast: 733.68 ft 5:00PM Apr 24, 2024Highest Forecast: 733.68 ft 11:00PM Apr 24, 2024Highest Forecast: 733.68 ft 5:00AM Apr 25, 2024Highest Forecast: 733.68 ft 11:00AM Apr 25, 2024US Army Corps of EngineersLGDW1(plotting HFIRX) Graph Created (1:01PM Apr 18, 2024)ObservedForecast (issued 10:25AM Apr 18)Latest observed value: 733.72 ft at 12:00 PM PDT 18-Apr-2024.
Printable Image
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.

Return to Area Map
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) 737.40 ft on 02/18/2023 (P)
(2) 737.37 ft on 10/23/2022
(3) 737.29 ft on 01/01/2017
(4) 737.28 ft on 08/02/2021
(5) 737.25 ft on 09/19/2020
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 737.40 ft on 02/18/2023 (P)
(2) 737.37 ft on 10/23/2022
(3) 737.28 ft on 08/02/2021
(4) 737.25 ft on 09/19/2020
(5) 737.23 ft on 09/18/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 734.66 ft on 05/24/2022
(2) 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: 46.657500° N, Longitude: 117.431100° 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:
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:27 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities