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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.
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USGS Water-Year Summary 2024
14197900 WILLAMETTE RIVER AT NEWBERG, OR
LOCATION - Lat 45°17'05", long 122°57'37" referenced to North American Datum of 1927, in sec.68, T.3 S., R.2 W., Yamhill County, OR, Hydrologic Unit 17090007, on left bank, at Newberg and at mile 50.0.
DRAINAGE AREA - 8,350 mi². approximately.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2001 to current year.
GAGE - Water-stage recorder and acoustic velocity meter (AVM). Datum of gage is NGVD of 1929.
REMARKS - Flow regulated by many reservoirs upstream. Gage pool elevations are at times affected by paper mill operations, and by Portland General Electric Co. hydropower operations.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 175,000 ft³/s Jan. 22, 2012, gage height, 82.46 ft; maximum gage height, 82.95 ft Jan. 22, 2012; minimum discharge, 3,680 ft³/s Aug. 4, 2015.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 2001 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 26.6°C July 5, 2015; minimum, 0.8°C Dec. 11, 2009.
