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Hydrograph River at a Glance Download
Lake Chelan at Chelan Forebay Elevation (ft)Observed: 1095.4 ft at 11:59PM Oct 20, 2021Highest Observation: 1095.45 ft at 12:00AM Oct 21, 2021Observed: 1095.36 ft at 7:00AM Oct 21, 2021Observed: 1095.32 ft at 11:59PM Oct 21, 2021Observed: 1095.34 ft at 12:00AM Oct 22, 2021Observed: 1095.26 ft at 7:00AM Oct 22, 2021Observed: 1095.24 ft at 11:59PM Oct 22, 2021Observed: 1095.26 ft at 12:00AM Oct 23, 2021Observed: 1095.18 ft at 7:00AM Oct 23, 2021Observed: 1095.12 ft at 11:59PM Oct 23, 2021Observed: 1095.16 ft at 12:00AM Oct 24, 2021Observed: 1095.05 ft at 7:00AM Oct 24, 2021Observed: 1095.08 ft at 11:59PM Oct 24, 2021Observed: 1095.08 ft at 12:00AM Oct 25, 2021Observed: 1095.01 ft at 7:00AM Oct 25, 2021Observed: 1094.98 ft at 11:59PM Oct 25, 2021Observed: 1095.01 ft at 12:00AM Oct 26, 2021Observed: 1094.96 ft at 7:00AM Oct 26, 2021Observed: 1094.89 ft at 11:59PM Oct 26, 2021Observed: 1094.93 ft at 12:00AM Oct 27, 2021Observed: 1094.89 ft at 7:00AM Oct 27, 2021Highest Forecast: 1094.88 ft 11:00AM Oct 27, 2021Forecast: 1094.87 ft 5:00PM Oct 27, 2021Forecast: 1094.86 ft 11:00PM Oct 27, 2021Forecast: 1094.85 ft 5:00AM Oct 28, 2021Forecast: 1094.84 ft 11:00AM Oct 28, 2021Forecast: 1094.83 ft 5:00PM Oct 28, 2021Forecast: 1094.82 ft 11:00PM Oct 28, 2021Forecast: 1094.81 ft 5:00AM Oct 29, 2021Forecast: 1094.8 ft 11:00AM Oct 29, 2021Forecast: 1094.79 ft 5:00PM Oct 29, 2021Forecast: 1094.78 ft 11:00PM Oct 29, 2021Forecast: 1094.77 ft 5:00AM Oct 30, 2021Forecast: 1094.76 ft 11:00AM Oct 30, 2021Forecast: 1094.75 ft 5:00PM Oct 30, 2021Forecast: 1094.74 ft 11:00PM Oct 30, 2021Forecast: 1094.73 ft 5:00AM Oct 31, 2021Forecast: 1094.72 ft 11:00AM Oct 31, 2021Forecast: 1094.71 ft 5:00PM Oct 31, 2021Forecast: 1094.7 ft 11:00PM Oct 31, 2021Forecast: 1094.69 ft 5:00AM Nov 01, 2021Forecast: 1094.67 ft 11:00AM Nov 01, 2021Forecast: 1094.66 ft 5:00PM Nov 01, 2021Forecast: 1094.65 ft 11:00PM Nov 01, 2021Forecast: 1094.63 ft 5:00AM Nov 02, 2021Forecast: 1094.62 ft 11:00AM Nov 02, 2021Forecast: 1094.6 ft 5:00PM Nov 02, 2021Forecast: 1094.59 ft 11:00PM Nov 02, 2021Forecast: 1094.57 ft 5:00AM Nov 03, 2021USGS--Water Resources of the United StatesCHDW1(plotting HFIRX) Graph Created (10:31AM Oct 27, 2021)ObservedForecast (issued 8:44AM Oct 27)Latest observed value: 1094.89 ft at 7:00 AM PDT 27-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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