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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
12451200 LAKE CHELAN AT PURPLE POINT AT STEHEKIN, WA
LOCATION - Lat 48°18'22", long 120°39'11" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.06, T.32 N., R.18 E., Chelan County, WA, Hydrologic Unit 17020009, Lake Chelan National Recreation Area, on north shore of Lake Chelan, 0.5 mile southeast of Stehekin boat landing.
DRAINAGE AREA - 924 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Unpublished data from Oct. 1 2007 to Sept. 4, 2018 available in archives of the U.S. Geological Survey.
GAGE - Water-stage recorder. Datum of gage is 1.73 ft below NGVD of 1929 (reported) and 2.54 ft above NAVD of 1988
REMARKS -
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 1,099.58ft, July 21, 2020; minimum elevation, 1,084.38 ft, March 21, 2019.
