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Hydrograph River at a Glance Download
Lake Chelan at Chelan Forebay Elevation (ft)Observed: 1095.67 ft at 7:00AM Nov 18, 2020Highest Observation: 1095.7 ft at 12:00AM Nov 19, 2020Observed: 1095.67 ft at 7:00AM Nov 19, 2020Observed: 1095.65 ft at 12:00AM Nov 20, 2020Observed: 1095.6 ft at 7:00AM Nov 20, 2020Observed: 1095.57 ft at 12:00AM Nov 21, 2020Observed: 1095.5 ft at 7:00AM Nov 21, 2020Observed: 1095.49 ft at 12:00AM Nov 22, 2020Observed: 1095.45 ft at 7:00AM Nov 22, 2020Observed: 1095.4 ft at 12:00AM Nov 23, 2020Observed: 1095.34 ft at 7:00AM Nov 23, 2020Observed: 1095.32 ft at 12:00AM Nov 24, 2020Observed: 1095.26 ft at 7:00AM Nov 24, 2020Highest Forecast: 1095.23 ft 4:00PM Nov 24, 2020Forecast: 1095.21 ft 10:00PM Nov 24, 2020Forecast: 1095.19 ft 4:00AM Nov 25, 2020Forecast: 1095.17 ft 10:00AM Nov 25, 2020Forecast: 1095.16 ft 4:00PM Nov 25, 2020Forecast: 1095.14 ft 10:00PM Nov 25, 2020Forecast: 1095.12 ft 4:00AM Nov 26, 2020Forecast: 1095.1 ft 10:00AM Nov 26, 2020Forecast: 1095.09 ft 4:00PM Nov 26, 2020Forecast: 1095.07 ft 10:00PM Nov 26, 2020Forecast: 1095.05 ft 4:00AM Nov 27, 2020Forecast: 1095.03 ft 10:00AM Nov 27, 2020Forecast: 1095.01 ft 4:00PM Nov 27, 2020Forecast: 1095 ft 10:00PM Nov 27, 2020Forecast: 1094.98 ft 4:00AM Nov 28, 2020Forecast: 1094.96 ft 10:00AM Nov 28, 2020Forecast: 1094.94 ft 4:00PM Nov 28, 2020Forecast: 1094.92 ft 10:00PM Nov 28, 2020Forecast: 1094.91 ft 4:00AM Nov 29, 2020Forecast: 1094.89 ft 10:00AM Nov 29, 2020Forecast: 1094.87 ft 4:00PM Nov 29, 2020Forecast: 1094.85 ft 10:00PM Nov 29, 2020Forecast: 1094.83 ft 4:00AM Nov 30, 2020Forecast: 1094.82 ft 10:00AM Nov 30, 2020Forecast: 1094.8 ft 4:00PM Nov 30, 2020Forecast: 1094.78 ft 10:00PM Nov 30, 2020Forecast: 1094.77 ft 4:00AM Dec 01, 2020Forecast: 1094.76 ft 10:00AM Dec 01, 2020USGS--Water Resources of the United StatesCHDW1(plotting HFIRX) Graph Created (12:16PM Nov 24, 2020)ObservedForecast (issued 9:32AM Nov 24)Latest observed value: 1095.26 ft at 7:00 AM PST 24-Nov-2020.
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Tabular Data (UTC)
Tabular Data (PST)
XML Data
RSS Files
Datum: Not Available
NOTE: Gauge reading affected by reservoir operations.

NOTE: Forecasts for the Lake Chelan at Chelan are issued routinely year-round.

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Upstream Gauge - at Purple Point at Stehekin Upstream Gauge
Flood Categories (in feet)
Not Available

Historic Crests
(1) 1,100.16 ft on 06/30/1981

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,100.16 ft on 06/30/1981

(P): Preliminary values subject to further review.

Low Water Records
(1) 1,079.68 ft on 04/03/1970
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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.
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If you notice any errors in the below information, please contact our Webmaster
6000 Flows in excess of 6000cfs may damage the stream restoration work in the Chelan River Gorge downstream of the Chelan Dam.
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Latitude: 47.836389° N, Longitude: 120.060278° 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)
(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
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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, WA 99224
(509) 244-0110
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Page last modified: 30-Oct-2020 4:07 PM
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