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Water-Year Summary for Site 14207770

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00065 Gage height(Max.,Min.,Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
14207770 WILLAMETTE RIVER BELOW FALLS, AT OREGON CITY, OR
LOCATION - Lat 45°21'28", long 122°36'35" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.31, T.2 S., R.2 E., Clackamas County, OR, Hydrologic Unit 17090007, on right bank, 0.5 mi downstream from Willamette Falls, 1.4 mi upstream from Clackamas River and at mile 26.2.
DRAINAGE AREA - 10,000 mi². approximately.
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1976 to current year (gage heights only).
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (Oregon Department of Transportation bench mark).
REMARKS - Flow regulated by many reservoirs upstream. Gage out of operation during periods November 1993 to January 1994 and July to September 1994. Precipitation records for period October 2009 to September 2012 have been collected at this location.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum gage height, 48.10 ft Dec. 25, 1964, from National Weather Service database.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 46.04 ft Feb. 9, 1996, from high-water mark; minimum gage height, 1.24 ft July 14, 2001.