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Hydrograph River at a Glance Download
Lake Chelan at Chelan Forebay Elevation (ft)Observed: 1086.13 ft at 7:00AM Apr 13, 2021Observed: 1086.15 ft at 11:59PM Apr 13, 2021Observed: 1086.13 ft at 12:00AM Apr 14, 2021Observed: 1086.13 ft at 7:00AM Apr 14, 2021Observed: 1086.15 ft at 11:59PM Apr 14, 2021Observed: 1086.13 ft at 12:00AM Apr 15, 2021Observed: 1086.14 ft at 7:00AM Apr 15, 2021Observed: 1086.16 ft at 11:59PM Apr 15, 2021Observed: 1086.15 ft at 12:00AM Apr 16, 2021Observed: 1086.15 ft at 7:00AM Apr 16, 2021Observed: 1086.24 ft at 11:59PM Apr 16, 2021Observed: 1086.2 ft at 12:00AM Apr 17, 2021Observed: 1086.24 ft at 7:00AM Apr 17, 2021Observed: 1086.28 ft at 11:59PM Apr 17, 2021Observed: 1086.25 ft at 12:00AM Apr 18, 2021Observed: 1086.35 ft at 7:00AM Apr 18, 2021Observed: 1086.41 ft at 11:59PM Apr 18, 2021Observed: 1086.39 ft at 12:00AM Apr 19, 2021Observed: 1086.47 ft at 7:00AM Apr 19, 2021Highest Observation: 1086.63 ft at 11:59PM Apr 19, 2021Observed: 1086.53 ft at 12:00AM Apr 20, 2021Forecast: 1086.61 ft 5:00AM Apr 20, 2021Forecast: 1086.64 ft 11:00AM Apr 20, 2021Forecast: 1086.66 ft 5:00PM Apr 20, 2021Forecast: 1086.68 ft 11:00PM Apr 20, 2021Forecast: 1086.69 ft 5:00AM Apr 21, 2021Forecast: 1086.71 ft 11:00AM Apr 21, 2021Forecast: 1086.73 ft 5:00PM Apr 21, 2021Forecast: 1086.75 ft 11:00PM Apr 21, 2021Forecast: 1086.76 ft 5:00AM Apr 22, 2021Forecast: 1086.79 ft 11:00AM Apr 22, 2021Forecast: 1086.81 ft 5:00PM Apr 22, 2021Forecast: 1086.84 ft 11:00PM Apr 22, 2021Forecast: 1086.86 ft 5:00AM Apr 23, 2021Forecast: 1086.89 ft 11:00AM Apr 23, 2021Forecast: 1086.92 ft 5:00PM Apr 23, 2021Forecast: 1086.94 ft 11:00PM Apr 23, 2021Forecast: 1086.96 ft 5:00AM Apr 24, 2021Forecast: 1086.98 ft 11:00AM Apr 24, 2021Forecast: 1086.99 ft 5:00PM Apr 24, 2021Forecast: 1087.01 ft 11:00PM Apr 24, 2021Forecast: 1087.03 ft 5:00AM Apr 25, 2021Forecast: 1087.04 ft 11:00AM Apr 25, 2021Forecast: 1087.06 ft 5:00PM Apr 25, 2021Forecast: 1087.08 ft 11:00PM Apr 25, 2021Forecast: 1087.09 ft 5:00AM Apr 26, 2021Forecast: 1087.1 ft 11:00AM Apr 26, 2021Highest Forecast: 1087.12 ft 5:00PM Apr 26, 2021Highest Forecast: 1087.12 ft 11:00PM Apr 26, 2021USGS--Water Resources of the United StatesCHDW1(plotting HFIRX) Graph Created (2:46AM Apr 20, 2021)ObservedForecast (issued 3:35PM Apr 19)Latest observed value: 1086.53 ft at 12:00 AM PDT 20-Apr-2021.
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Tabular Data (UTC)
Tabular Data (PDT)
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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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 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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