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Hydrograph River at a Glance Download
Lake Chelan at Chelan Forebay Elevation (ft)Highest Observation: 1096.76 ft at 11:59PM Oct 09, 2021Highest Observation: 1096.76 ft at 7:00AM Oct 10, 2021Observed: 1096.66 ft at 11:59PM Oct 10, 2021Observed: 1096.72 ft at 12:00AM Oct 11, 2021Observed: 1096.6 ft at 7:00AM Oct 11, 2021Observed: 1096.5 ft at 11:59PM Oct 11, 2021Observed: 1096.55 ft at 12:00AM Oct 12, 2021Observed: 1096.42 ft at 7:00AM Oct 12, 2021Observed: 1096.35 ft at 11:59PM Oct 12, 2021Observed: 1096.41 ft at 12:00AM Oct 13, 2021Observed: 1096.31 ft at 7:00AM Oct 13, 2021Observed: 1096.26 ft at 11:59PM Oct 13, 2021Observed: 1096.29 ft at 12:00AM Oct 14, 2021Observed: 1096.19 ft at 7:00AM Oct 14, 2021Observed: 1096.13 ft at 11:59PM Oct 14, 2021Observed: 1096.17 ft at 12:00AM Oct 15, 2021Observed: 1096.06 ft at 7:00AM Oct 15, 2021Observed: 1096 ft at 11:59PM Oct 15, 2021Observed: 1096.04 ft at 12:00AM Oct 16, 2021Observed: 1095.97 ft at 7:00AM Oct 16, 2021Highest Forecast: 1095.93 ft 5:00PM Oct 16, 2021Forecast: 1095.91 ft 11:00PM Oct 16, 2021Forecast: 1095.89 ft 5:00AM Oct 17, 2021Forecast: 1095.87 ft 11:00AM Oct 17, 2021Forecast: 1095.85 ft 5:00PM Oct 17, 2021Forecast: 1095.83 ft 11:00PM Oct 17, 2021Forecast: 1095.81 ft 5:00AM Oct 18, 2021Forecast: 1095.79 ft 11:00AM Oct 18, 2021Forecast: 1095.77 ft 5:00PM Oct 18, 2021Forecast: 1095.75 ft 11:00PM Oct 18, 2021Forecast: 1095.73 ft 5:00AM Oct 19, 2021Forecast: 1095.71 ft 11:00AM Oct 19, 2021Forecast: 1095.69 ft 5:00PM Oct 19, 2021Forecast: 1095.67 ft 11:00PM Oct 19, 2021Forecast: 1095.65 ft 5:00AM Oct 20, 2021Forecast: 1095.63 ft 11:00AM Oct 20, 2021Forecast: 1095.61 ft 5:00PM Oct 20, 2021Forecast: 1095.59 ft 11:00PM Oct 20, 2021Forecast: 1095.57 ft 5:00AM Oct 21, 2021Forecast: 1095.55 ft 11:00AM Oct 21, 2021Forecast: 1095.53 ft 5:00PM Oct 21, 2021Forecast: 1095.51 ft 11:00PM Oct 21, 2021Forecast: 1095.49 ft 5:00AM Oct 22, 2021Forecast: 1095.47 ft 11:00AM Oct 22, 2021Forecast: 1095.45 ft 5:00PM Oct 22, 2021Forecast: 1095.43 ft 11:00PM Oct 22, 2021Forecast: 1095.41 ft 5:00AM Oct 23, 2021Forecast: 1095.39 ft 11:00AM Oct 23, 2021USGS--Water Resources of the United StatesCHDW1(plotting HFIRX) Graph Created (11:16AM Oct 16, 2021)ObservedForecast (issued 9:05AM Oct 16)Latest observed value: 1095.97 ft at 7:00 AM PDT 16-Oct-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
(2) 1,099.82 ft on 07/02/2021 (P)
(3) 1,099.81 ft on 07/09/2019
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(P): Preliminary values subject to further review.

Recent Crests
(1) 1,099.82 ft on 07/02/2021 (P)
(2) 1,099.78 ft on 07/28/2020
(3) 1,099.81 ft on 07/09/2019
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(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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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
National Weather Service
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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