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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
14211550 JOHNSON CREEK AT MILWAUKIE, OR
LOCATION - Lat 45°27'11", long 122°38'31" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.26, T.1 S., R.1 E., Clackamas County, OR, Hydrologic Unit 17090012, on right bank, upstream side of Milport Road bridge, in city limits of Milwaukie and at mile 0.7.
DRAINAGE AREA - 53.17 mi².
REVISIONS HISTORY - Revisions: Discharges approved and reported via NWISWeb for period Jan. 18 to Apr. 14, 2016 have been revised.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1989 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is NGVD of 1929, from State of Oregon.
REMARKS - Small diversions for irrigation upstream from station. Significant portion of summer flow is from Crystal Springs, through Crystal Springs Creek, which enters 0.5 mi upstream from gage.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,410 ft³/s Dec. 8, 2015, gage height, 31.33 ft; maximum gage height, 34.43 ft Feb. 9, 1996, backwater from Willamette River; minimum discharge, 9.3 ft³/s Aug. 8, 13, Sept. 22, 2005.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: May 1998 to current year.
INSTRUMENTATION - Temperature probe and data logger.
REMARKS - Chemical analyses, sediment and turbidity data collected at this location are available via NWISWeb.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 28.2°C June 28, 2021; minimum, 0.0°C Jan. 6, 7, 2004.
