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Hydrograph River at a Glance Download
Columbia River at Rock Island Dam Forebay Elevation (ft)Observed: 611.3 ft at 6:00PM May 05, 2021Observed: 610.54 ft at 7:00PM May 05, 2021Observed: 611.62 ft at 8:00PM May 05, 2021Observed: 611.45 ft at 9:00PM May 05, 2021Observed: 611.93 ft at 10:00PM May 05, 2021Observed: 611.39 ft at 11:00PM May 05, 2021Observed: 611.22 ft at 11:59PM May 05, 2021Observed: 611.22 ft at 12:00AM May 06, 2021Observed: 610.61 ft at 1:00AM May 06, 2021Observed: 610.28 ft at 2:00AM May 06, 2021Observed: 610.84 ft at 3:00AM May 06, 2021Observed: 610.56 ft at 4:00AM May 06, 2021Observed: 611.05 ft at 5:00AM May 06, 2021Observed: 611.78 ft at 6:00AM May 06, 2021Observed: 611.82 ft at 7:00AM May 06, 2021Observed: 611.61 ft at 8:00AM May 06, 2021Observed: 610.76 ft at 9:00AM May 06, 2021Observed: 610.69 ft at 10:00AM May 06, 2021Observed: 611.32 ft at 11:00AM May 06, 2021Observed: 611.33 ft at 12:00PM May 06, 2021Observed: 610.06 ft at 1:00PM May 06, 2021Observed: 610.39 ft at 2:00PM May 06, 2021Observed: 610.76 ft at 3:00PM May 06, 2021Observed: 610.94 ft at 4:00PM May 06, 2021Observed: 611.1 ft at 5:00PM May 06, 2021Observed: 610.18 ft at 6:00PM May 06, 2021Observed: 610 ft at 7:00PM May 06, 2021Observed: 610.81 ft at 8:00PM May 06, 2021Observed: 610.66 ft at 9:00PM May 06, 2021Observed: 610.78 ft at 10:00PM May 06, 2021Observed: 611.32 ft at 11:00PM May 06, 2021Observed: 610.65 ft at 11:59PM May 06, 2021Observed: 610.65 ft at 12:00AM May 07, 2021Observed: 610.67 ft at 1:00AM May 07, 2021Observed: 610.56 ft at 2:00AM May 07, 2021Observed: 610.25 ft at 3:00AM May 07, 2021Observed: 610.78 ft at 4:00AM May 07, 2021Observed: 610.97 ft at 5:00AM May 07, 2021Observed: 611.04 ft at 6:00AM May 07, 2021Observed: 611.28 ft at 7:00AM May 07, 2021Observed: 611.49 ft at 8:00AM May 07, 2021Observed: 611.5 ft at 9:00AM May 07, 2021Observed: 611.03 ft at 10:00AM May 07, 2021Observed: 611.44 ft at 11:00AM May 07, 2021Observed: 611.1 ft at 12:00PM May 07, 2021Observed: 611.26 ft at 1:00PM May 07, 2021Observed: 610.95 ft at 2:00PM May 07, 2021Observed: 611.59 ft at 3:00PM May 07, 2021Observed: 612.11 ft at 4:00PM May 07, 2021Observed: 612.47 ft at 5:00PM May 07, 2021Observed: 611.23 ft at 6:00PM May 07, 2021Observed: 610.48 ft at 7:00PM May 07, 2021Observed: 610.88 ft at 8:00PM May 07, 2021Observed: 610.95 ft at 9:00PM May 07, 2021Observed: 611.95 ft at 10:00PM May 07, 2021Observed: 611.92 ft at 11:00PM May 07, 2021Observed: 612.19 ft at 11:59PM May 07, 2021Observed: 611.25 ft at 12:00AM May 08, 2021Observed: 611.68 ft at 1:00AM May 08, 2021Observed: 610.51 ft at 2:00AM May 08, 2021Observed: 611.1 ft at 3:00AM May 08, 2021Observed: 610.75 ft at 4:00AM May 08, 2021Observed: 610.48 ft at 5:00AM May 08, 2021Observed: 610.75 ft at 6:00AM May 08, 2021Observed: 611.13 ft at 7:00AM May 08, 2021Observed: 611.92 ft at 8:00AM May 08, 2021Observed: 611.74 ft at 9:00AM May 08, 2021Observed: 611.57 ft at 10:00AM May 08, 2021Observed: 611.77 ft at 11:00AM May 08, 2021Observed: 611.92 ft at 12:00PM May 08, 2021Observed: 611.99 ft at 1:00PM May 08, 2021Observed: 612.18 ft at 2:00PM May 08, 2021Observed: 612.02 ft at 3:00PM May 08, 2021Observed: 612.2 ft at 4:00PM May 08, 2021Observed: 611.92 ft at 5:00PM May 08, 2021Observed: 612.27 ft at 6:00PM May 08, 2021Observed: 612.1 ft at 7:00PM May 08, 2021Observed: 611.22 ft at 8:00PM May 08, 2021Observed: 610.71 ft at 9:00PM May 08, 2021Observed: 610.05 ft at 10:00PM May 08, 2021Observed: 610.52 ft at 11:00PM May 08, 2021Observed: 611.44 ft at 11:59PM May 08, 2021Observed: 611.44 ft at 12:00AM May 09, 2021Observed: 611.28 ft at 1:00AM May 09, 2021Observed: 611.4 ft at 2:00AM May 09, 2021Observed: 611.31 ft at 3:00AM May 09, 2021Observed: 610.15 ft at 4:00AM May 09, 2021Observed: 610.18 ft at 5:00AM May 09, 2021Observed: 610.18 ft at 6:00AM May 09, 2021Observed: 611.15 ft at 7:00AM May 09, 2021Observed: 611.61 ft at 8:00AM May 09, 2021Observed: 611.93 ft at 9:00AM May 09, 2021Observed: 611.86 ft at 10:00AM May 09, 2021Observed: 611.92 ft at 11:00AM May 09, 2021Observed: 612.01 ft at 12:00PM May 09, 2021Observed: 612.04 ft at 1:00PM May 09, 2021Observed: 612.03 ft at 2:00PM May 09, 2021Observed: 611.97 ft at 3:00PM May 09, 2021Observed: 611.95 ft at 4:00PM May 09, 2021Observed: 611.79 ft at 5:00PM May 09, 2021Observed: 612.08 ft at 6:00PM May 09, 2021Observed: 612.37 ft at 7:00PM May 09, 2021Observed: 612.29 ft at 8:00PM May 09, 2021Observed: 611.83 ft at 9:00PM May 09, 2021Observed: 612.14 ft at 10:00PM May 09, 2021Observed: 612.34 ft at 11:00PM May 09, 2021Observed: 612.33 ft at 11:59PM May 09, 2021Observed: 612.33 ft at 12:00AM May 10, 2021Observed: 612.4 ft at 1:00AM May 10, 2021Observed: 611.53 ft at 2:00AM May 10, 2021Observed: 610.91 ft at 3:00AM May 10, 2021Observed: 611.05 ft at 4:00AM May 10, 2021Observed: 611.3 ft at 5:00AM May 10, 2021Observed: 611.42 ft at 6:00AM May 10, 2021Observed: 611.7 ft at 7:00AM May 10, 2021Observed: 611.84 ft at 8:00AM May 10, 2021Observed: 611.88 ft at 9:00AM May 10, 2021Observed: 611.7 ft at 10:00AM May 10, 2021Observed: 611.67 ft at 11:00AM May 10, 2021Observed: 611.91 ft at 12:00PM May 10, 2021Observed: 611.87 ft at 1:00PM May 10, 2021Observed: 611.73 ft at 2:00PM May 10, 2021Observed: 611.87 ft at 3:00PM May 10, 2021Observed: 611.9 ft at 4:00PM May 10, 2021Observed: 611.53 ft at 5:00PM May 10, 2021Observed: 611.42 ft at 6:00PM May 10, 2021Observed: 611.01 ft at 7:00PM May 10, 2021Observed: 611.39 ft at 8:00PM May 10, 2021Observed: 611.34 ft at 9:00PM May 10, 2021Observed: 610.92 ft at 10:00PM May 10, 2021Observed: 610.69 ft at 11:00PM May 10, 2021Observed: 610.27 ft at 11:59PM May 10, 2021Observed: 611.47 ft at 12:00AM May 11, 2021Observed: 610.76 ft at 1:00AM May 11, 2021Observed: 610.6 ft at 2:00AM May 11, 2021Observed: 610.63 ft at 3:00AM May 11, 2021Observed: 610.71 ft at 4:00AM May 11, 2021Observed: 610.98 ft at 5:00AM May 11, 2021Observed: 611.53 ft at 6:00AM May 11, 2021Observed: 612.3 ft at 7:00AM May 11, 2021Observed: 612.38 ft at 8:00AM May 11, 2021Highest Observation: 612.63 ft at 9:00AM May 11, 2021Observed: 612.34 ft at 10:00AM May 11, 2021Observed: 612.38 ft at 11:00AM May 11, 2021Observed: 612.14 ft at 12:00PM May 11, 2021Observed: 611.57 ft at 1:00PM May 11, 2021Observed: 611.03 ft at 2:00PM May 11, 2021Observed: 610.19 ft at 3:00PM May 11, 2021Observed: 610.45 ft at 4:00PM May 11, 2021Observed: 610.58 ft at 5:00PM May 11, 2021Observed: 612.24 ft at 6:00PM May 11, 2021Observed: 611.65 ft at 7:00PM May 11, 2021Observed: 611.45 ft at 8:00PM May 11, 2021Observed: 611.73 ft at 9:00PM May 11, 2021Observed: 611.97 ft at 10:00PM May 11, 2021Observed: 612.13 ft at 11:00PM May 11, 2021Observed: 611.99 ft at 11:59PM May 11, 2021Observed: 611.99 ft at 12:00AM May 12, 2021Observed: 612.3 ft at 1:00AM May 12, 2021Observed: 612.4 ft at 2:00AM May 12, 2021Observed: 612.37 ft at 3:00AM May 12, 2021Observed: 612.3 ft at 4:00AM May 12, 2021Observed: 612.18 ft at 5:00AM May 12, 2021Observed: 611.47 ft at 6:00AM May 12, 2021Observed: 611.7 ft at 7:00AM May 12, 2021Observed: 611.43 ft at 8:00AM May 12, 2021Observed: 612.08 ft at 9:00AM May 12, 2021Observed: 611.93 ft at 10:00AM May 12, 2021Observed: 612.15 ft at 11:00AM May 12, 2021Observed: 611.9 ft at 12:00PM May 12, 2021Observed: 610.87 ft at 1:00PM May 12, 2021Observed: 610.63 ft at 2:00PM May 12, 2021Observed: 610.58 ft at 3:00PM May 12, 2021Observed: 611.28 ft at 4:00PM May 12, 2021Observed: 610.69 ft at 5:00PM May 12, 2021Highest Forecast: 612.15 ft 11:00PM May 12, 2021Highest Forecast: 612.15 ft 5:00AM May 13, 2021Highest Forecast: 612.15 ft 11:00AM May 13, 2021Highest Forecast: 612.15 ft 5:00PM May 13, 2021Highest Forecast: 612.15 ft 11:00PM May 13, 2021Highest Forecast: 612.15 ft 5:00AM May 14, 2021Highest Forecast: 612.15 ft 11:00AM May 14, 2021Highest Forecast: 612.15 ft 5:00PM May 14, 2021Highest Forecast: 612.15 ft 11:00PM May 14, 2021Highest Forecast: 612.15 ft 5:00AM May 15, 2021Highest Forecast: 612.15 ft 11:00AM May 15, 2021Highest Forecast: 612.15 ft 5:00PM May 15, 2021Highest Forecast: 612.15 ft 11:00PM May 15, 2021Highest Forecast: 612.15 ft 5:00AM May 16, 2021Highest Forecast: 612.15 ft 11:00AM May 16, 2021Highest Forecast: 612.15 ft 5:00PM May 16, 2021Highest Forecast: 612.15 ft 11:00PM May 16, 2021Highest Forecast: 612.15 ft 5:00AM May 17, 2021Highest Forecast: 612.15 ft 11:00AM May 17, 2021Highest Forecast: 612.15 ft 5:00PM May 17, 2021Highest Forecast: 612.15 ft 11:00PM May 17, 2021Highest Forecast: 612.15 ft 5:00AM May 18, 2021Highest Forecast: 612.15 ft 11:00AM May 18, 2021Highest Forecast: 612.15 ft 5:00PM May 18, 2021Highest Forecast: 612.15 ft 11:00PM May 18, 2021Highest Forecast: 612.15 ft 5:00AM May 19, 2021Highest Forecast: 612.15 ft 11:00AM May 19, 2021Highest Forecast: 612.15 ft 5:00PM May 19, 2021USGS--Water Resources of the United StatesRISW1(plotting HFIRX) Graph Created (5:46PM May 12, 2021)ObservedForecast (issued 3:48PM May 12)Latest observed value: 610.69 ft at 5:00 PM PDT 12-May-2021.
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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.

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

NOTE: Forecasts for the Columbia River at Rock Island Dam are issued routinely year-round.

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Upstream Gauge - at Rocky Reach Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Wanapum Dam
Flood Categories (in feet)
Not Available

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
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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: 47.332500° N, Longitude: 120.080000° 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  
Additional Information Collapse
courtesy of US Army Corp of Engineers
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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.
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Spokane Weather Forecast Office
2601 N. Rambo Rd.
Spokane, WA 99224
(509) 244-0110
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Page last modified: 2-Nov-2020 7:27 PM
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