USGS Water-Year Summary 2024
14192015 WILLAMETTE RIVER AT KEIZER, OR
LOCATION - Lat 44°57'25.2", long 123°02'11.9" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 sec.38, T.7 S., R.3 W., Marion County, OR, Hydrologic Unit 17090007, on the right bank, 0.4 mi downstream from Mill Creek and approximately at mile 83.3.
DRAINAGE AREA - 7,280 mi², approximately.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 2000 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 26.4°C July 29, 2009, July 3, 2015; minimum, 0.7°C Dec. 10, 11, 2010.