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Hydrograph River at a Glance Download
Lake Chelan at Chelan Forebay Elevation (ft)Highest Observation: 1086.5 ft at 12:00AM Feb 15, 2020Observed: 1086.45 ft at 7:00AM Feb 15, 2020Observed: 1086.43 ft at 12:00AM Feb 16, 2020Observed: 1086.38 ft at 7:00AM Feb 16, 2020Observed: 1086.38 ft at 12:00AM Feb 17, 2020Observed: 1086.38 ft at 7:00AM Feb 17, 2020Observed: 1086.37 ft at 12:00AM Feb 18, 2020Observed: 1086.32 ft at 7:00AM Feb 18, 2020Observed: 1086.29 ft at 12:00AM Feb 19, 2020Observed: 1086.24 ft at 7:00AM Feb 19, 2020Observed: 1086.15 ft at 7:00AM Feb 20, 2020Observed: 1086.14 ft at 12:00AM Feb 21, 2020Observed: 1086.12 ft at 7:00AM Feb 21, 2020Highest Forecast: 1086.08 ft 10:00AM Feb 21, 2020Forecast: 1086.07 ft 4:00PM Feb 21, 2020Forecast: 1086.06 ft 10:00PM Feb 21, 2020Forecast: 1086.04 ft 4:00AM Feb 22, 2020Forecast: 1086.03 ft 10:00AM Feb 22, 2020Forecast: 1086.01 ft 4:00PM Feb 22, 2020Forecast: 1086 ft 10:00PM Feb 22, 2020Forecast: 1085.98 ft 4:00AM Feb 23, 2020Forecast: 1085.97 ft 10:00AM Feb 23, 2020Forecast: 1085.95 ft 4:00PM Feb 23, 2020Forecast: 1085.93 ft 10:00PM Feb 23, 2020Forecast: 1085.92 ft 4:00AM Feb 24, 2020Forecast: 1085.9 ft 10:00AM Feb 24, 2020Forecast: 1085.89 ft 4:00PM Feb 24, 2020Forecast: 1085.87 ft 10:00PM Feb 24, 2020Forecast: 1085.86 ft 4:00AM Feb 25, 2020Forecast: 1085.84 ft 10:00AM Feb 25, 2020Forecast: 1085.83 ft 4:00PM Feb 25, 2020Forecast: 1085.81 ft 10:00PM Feb 25, 2020Forecast: 1085.79 ft 4:00AM Feb 26, 2020Forecast: 1085.78 ft 10:00AM Feb 26, 2020Forecast: 1085.76 ft 4:00PM Feb 26, 2020Forecast: 1085.75 ft 10:00PM Feb 26, 2020Forecast: 1085.73 ft 4:00AM Feb 27, 2020Forecast: 1085.71 ft 10:00AM Feb 27, 2020Forecast: 1085.7 ft 4:00PM Feb 27, 2020Forecast: 1085.68 ft 10:00PM Feb 27, 2020Forecast: 1085.66 ft 4:00AM Feb 28, 2020USGS--Water Resources of the United StatesCHDW1(plotting HFIRX) Graph Created (7:46AM Feb 21, 2020)ObservedForecast (issued 4:04PM Feb 20)Latest observed value: 1086.12 ft at 7:00 AM PST 21-Feb-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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Gauge LocationGauge Map Marker
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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2601 N. Rambo Rd.
Spokane, WA 99224
(509) 244-0110
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Page last modified: 4-Mar-2019 11:27 PM
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