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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

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



Hydrograph River at a Glance Download
Columbia River at Wanapum Dam Forebay Elevation (ft)Observed: 570.51 ft at 1:00AM Mar 12, 2024Observed: 570.79 ft at 2:00AM Mar 12, 2024Observed: 570.94 ft at 3:00AM Mar 12, 2024Observed: 570.38 ft at 4:00AM Mar 12, 2024Observed: 570.26 ft at 5:00AM Mar 12, 2024Observed: 570.24 ft at 6:00AM Mar 12, 2024Observed: 569.67 ft at 7:00AM Mar 12, 2024Observed: 569.62 ft at 8:00AM Mar 12, 2024Observed: 569.74 ft at 9:00AM Mar 12, 2024Observed: 569.85 ft at 10:00AM Mar 12, 2024Observed: 570.06 ft at 11:00AM Mar 12, 2024Observed: 570.2 ft at 12:00PM Mar 12, 2024Observed: 570.65 ft at 1:00PM Mar 12, 2024Observed: 570.56 ft at 2:00PM Mar 12, 2024Observed: 570.88 ft at 3:00PM Mar 12, 2024Observed: 571.12 ft at 4:00PM Mar 12, 2024Observed: 571.13 ft at 5:00PM Mar 12, 2024Observed: 570.9 ft at 6:00PM Mar 12, 2024Observed: 570.98 ft at 7:00PM Mar 12, 2024Observed: 571.07 ft at 8:00PM Mar 12, 2024Observed: 570.78 ft at 9:00PM Mar 12, 2024Observed: 570.84 ft at 10:00PM Mar 12, 2024Observed: 570.97 ft at 11:00PM Mar 12, 2024Observed: 571.01 ft at 11:59PM Mar 12, 2024Observed: 570.55 ft at 12:00AM Mar 13, 2024Observed: 570.77 ft at 1:00AM Mar 13, 2024Observed: 570.82 ft at 2:00AM Mar 13, 2024Observed: 570.25 ft at 3:00AM Mar 13, 2024Observed: 569.88 ft at 4:00AM Mar 13, 2024Observed: 569.74 ft at 5:00AM Mar 13, 2024Observed: 569.04 ft at 6:00AM Mar 13, 2024Observed: 568.56 ft at 7:00AM Mar 13, 2024Observed: 568.53 ft at 8:00AM Mar 13, 2024Observed: 568.72 ft at 9:00AM Mar 13, 2024Observed: 568.67 ft at 10:00AM Mar 13, 2024Observed: 569.11 ft at 11:00AM Mar 13, 2024Observed: 569.36 ft at 12:00PM Mar 13, 2024Observed: 569.6 ft at 1:00PM Mar 13, 2024Observed: 569.58 ft at 2:00PM Mar 13, 2024Observed: 569.67 ft at 3:00PM Mar 13, 2024Observed: 569.65 ft at 4:00PM Mar 13, 2024Observed: 569.62 ft at 5:00PM Mar 13, 2024Observed: 569.59 ft at 6:00PM Mar 13, 2024Observed: 569.84 ft at 7:00PM Mar 13, 2024Observed: 570.29 ft at 8:00PM Mar 13, 2024Observed: 570.1 ft at 9:00PM Mar 13, 2024Observed: 570.26 ft at 10:00PM Mar 13, 2024Observed: 570.46 ft at 11:00PM Mar 13, 2024Observed: 570.24 ft at 11:59PM Mar 13, 2024Observed: 569.68 ft at 12:00AM Mar 14, 2024Observed: 570.47 ft at 1:00AM Mar 14, 2024Observed: 570.68 ft at 2:00AM Mar 14, 2024Observed: 570.56 ft at 3:00AM Mar 14, 2024Observed: 570.64 ft at 4:00AM Mar 14, 2024Observed: 570.46 ft at 5:00AM Mar 14, 2024Observed: 570.07 ft at 6:00AM Mar 14, 2024Observed: 570.21 ft at 7:00AM Mar 14, 2024Observed: 570.47 ft at 8:00AM Mar 14, 2024Observed: 570.85 ft at 9:00AM Mar 14, 2024Observed: 571.2 ft at 10:00AM Mar 14, 2024Observed: 571.33 ft at 11:00AM Mar 14, 2024Observed: 571.09 ft at 12:00PM Mar 14, 2024Observed: 570.76 ft at 1:00PM Mar 14, 2024Observed: 570.2 ft at 2:00PM Mar 14, 2024Observed: 570.02 ft at 3:00PM Mar 14, 2024Observed: 569.88 ft at 4:00PM Mar 14, 2024Observed: 570.09 ft at 5:00PM Mar 14, 2024Observed: 570.62 ft at 6:00PM Mar 14, 2024Observed: 570.66 ft at 7:00PM Mar 14, 2024Observed: 570.75 ft at 8:00PM Mar 14, 2024Observed: 570.87 ft at 9:00PM Mar 14, 2024Observed: 571.14 ft at 10:00PM Mar 14, 2024Observed: 571.12 ft at 11:00PM Mar 14, 2024Observed: 571.2 ft at 11:59PM Mar 14, 2024Observed: 571.2 ft at 12:00AM Mar 15, 2024Observed: 571.13 ft at 1:00AM Mar 15, 2024Observed: 571.05 ft at 2:00AM Mar 15, 2024Observed: 570.79 ft at 3:00AM Mar 15, 2024Observed: 570.56 ft at 4:00AM Mar 15, 2024Observed: 570.48 ft at 5:00AM Mar 15, 2024Observed: 570.06 ft at 6:00AM Mar 15, 2024Observed: 569.77 ft at 7:00AM Mar 15, 2024Observed: 569.57 ft at 8:00AM Mar 15, 2024Observed: 569.62 ft at 9:00AM Mar 15, 2024Observed: 569.98 ft at 10:00AM Mar 15, 2024Observed: 570.32 ft at 11:00AM Mar 15, 2024Observed: 570.66 ft at 12:00PM Mar 15, 2024Observed: 570.68 ft at 1:00PM Mar 15, 2024Observed: 570.73 ft at 2:00PM Mar 15, 2024Observed: 570.58 ft at 3:00PM Mar 15, 2024Observed: 570.16 ft at 4:00PM Mar 15, 2024Observed: 570 ft at 5:00PM Mar 15, 2024Observed: 569.58 ft at 6:00PM Mar 15, 2024Observed: 569.53 ft at 7:00PM Mar 15, 2024Observed: 569.74 ft at 8:00PM Mar 15, 2024Observed: 569.77 ft at 9:00PM Mar 15, 2024Observed: 569.59 ft at 10:00PM Mar 15, 2024Observed: 569.74 ft at 11:00PM Mar 15, 2024Observed: 569.99 ft at 11:59PM Mar 15, 2024Observed: 570.17 ft at 12:00AM Mar 16, 2024Observed: 569.61 ft at 1:00AM Mar 16, 2024Observed: 569.73 ft at 2:00AM Mar 16, 2024Observed: 569.73 ft at 3:00AM Mar 16, 2024Observed: 569.72 ft at 4:00AM Mar 16, 2024Observed: 569.63 ft at 5:00AM Mar 16, 2024Observed: 569.47 ft at 6:00AM Mar 16, 2024Observed: 569.4 ft at 7:00AM Mar 16, 2024Observed: 569.52 ft at 8:00AM Mar 16, 2024Observed: 569.59 ft at 9:00AM Mar 16, 2024Observed: 569.74 ft at 10:00AM Mar 16, 2024Observed: 570.26 ft at 11:00AM Mar 16, 2024Observed: 570.25 ft at 12:00PM Mar 16, 2024Observed: 570.28 ft at 1:00PM Mar 16, 2024Observed: 570.68 ft at 2:00PM Mar 16, 2024Observed: 570.79 ft at 3:00PM Mar 16, 2024Observed: 570.55 ft at 4:00PM Mar 16, 2024Observed: 570.77 ft at 5:00PM Mar 16, 2024Observed: 570.74 ft at 6:00PM Mar 16, 2024Observed: 570.34 ft at 7:00PM Mar 16, 2024Observed: 570.76 ft at 8:00PM Mar 16, 2024Observed: 570.81 ft at 9:00PM Mar 16, 2024Observed: 570.72 ft at 10:00PM Mar 16, 2024Observed: 571.06 ft at 11:00PM Mar 16, 2024Observed: 571.16 ft at 11:59PM Mar 16, 2024Observed: 570.22 ft at 12:00AM Mar 17, 2024Observed: 571.15 ft at 1:00AM Mar 17, 2024Highest Observation: 571.4 ft at 2:00AM Mar 17, 2024Observed: 570.86 ft at 3:00AM Mar 17, 2024Observed: 570.54 ft at 4:00AM Mar 17, 2024Observed: 570.45 ft at 5:00AM Mar 17, 2024Observed: 570.14 ft at 6:00AM Mar 17, 2024Observed: 569.79 ft at 7:00AM Mar 17, 2024Observed: 569.85 ft at 8:00AM Mar 17, 2024Observed: 569.63 ft at 9:00AM Mar 17, 2024Observed: 569.6 ft at 10:00AM Mar 17, 2024Observed: 569.68 ft at 11:00AM Mar 17, 2024Observed: 569.34 ft at 12:00PM Mar 17, 2024Observed: 569.69 ft at 1:00PM Mar 17, 2024Observed: 569.94 ft at 2:00PM Mar 17, 2024Observed: 569.49 ft at 3:00PM Mar 17, 2024Observed: 569.9 ft at 4:00PM Mar 17, 2024Observed: 570.27 ft at 5:00PM Mar 17, 2024Observed: 569.32 ft at 6:00PM Mar 17, 2024Observed: 569.36 ft at 7:00PM Mar 17, 2024Observed: 569.47 ft at 8:00PM Mar 17, 2024Observed: 568.75 ft at 9:00PM Mar 17, 2024Observed: 569.1 ft at 10:00PM Mar 17, 2024Observed: 569.17 ft at 11:00PM Mar 17, 2024Observed: 568.67 ft at 11:59PM Mar 17, 2024Observed: 569.82 ft at 12:00AM Mar 18, 2024Observed: 568.99 ft at 1:00AM Mar 18, 2024Observed: 569.19 ft at 2:00AM Mar 18, 2024Observed: 568.91 ft at 3:00AM Mar 18, 2024Observed: 569.15 ft at 4:00AM Mar 18, 2024Observed: 569.16 ft at 5:00AM Mar 18, 2024Observed: 568.88 ft at 6:00AM Mar 18, 2024Observed: 568.73 ft at 7:00AM Mar 18, 2024Observed: 568.64 ft at 8:00AM Mar 18, 2024Observed: 569.04 ft at 9:00AM Mar 18, 2024Observed: 569.07 ft at 10:00AM Mar 18, 2024Observed: 569.33 ft at 11:00AM Mar 18, 2024Observed: 569.68 ft at 12:00PM Mar 18, 2024Observed: 570.15 ft at 3:00PM Mar 18, 2024Observed: 570.18 ft at 4:00PM Mar 18, 2024Observed: 570.26 ft at 5:00PM Mar 18, 2024Observed: 570.24 ft at 6:00PM Mar 18, 2024Observed: 570.1 ft at 7:00PM Mar 18, 2024Observed: 570.15 ft at 8:00PM Mar 18, 2024Observed: 570.1 ft at 9:00PM Mar 18, 2024Observed: 570.44 ft at 10:00PM Mar 18, 2024Observed: 570.69 ft at 11:00PM Mar 18, 2024WANW1(plotting HFIRX) Graph Created (12:46AM Mar 19, 2024)ObservedLatest observed value: 570.69 ft at 11:00 PM PDT 18-Mar-2024.
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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 are not available for the Columbia River at Wanapum Dam. Only observed stages are available for this point.

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Upstream Gauge - at Rock Island Dam Upstream Gauge Downstream Gauge Downstream Gauge - below Priest Rapids Dam
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 0
Low Stage (in feet): 562

Historic Crests
(1) 571.36 ft on 05/06/2018
(2) 571.31 ft on 04/23/2017
(3) 571.29 ft on 05/03/2023 (P)
(4) 571.29 ft on 05/17/2020
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 571.29 ft on 05/03/2023 (P)
(2) 571.18 ft on 05/15/2022
(3) 571.24 ft on 02/14/2021
(4) 571.29 ft on 05/17/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 563.17 ft on 09/11/2021
Show More Low Water Records
Zoom Level:12
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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: 46.873333° N, Longitude: 119.970833° 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  
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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
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Spokane, WA 99224
(509) 244-0110
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Page last modified: 2-Nov-2020 7:27 PM
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