USGS Water-Year Summary 2024
14159200 SOUTH FORK MCKENZIE RIVER ABOVE COUGAR LAKE, NEAR RAINBOW, OR
LOCATION - Lat 44°02'50", long 122°13'00" referenced to North American Datum of 1927, Lane County, OR, Hydrologic Unit 17090004, (unsurveyed), Willamette National Forest, on right bank, 100 ft upstream from Tipsoo Creek, 8.0 mi south of Rainbow, 9.0 mi southeast of town of Blue River and at mile 10.4.
DRAINAGE AREA - 160 mi². at former cableway, 0.2 mi downstream.
REVISIONS HISTORY - WSP 1638: Drainage area. WSP 1935: 1958(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1957 to September 1987, October 2000 to current year. Prior to October 1970, published as "above Cougar Reservoir."
GAGE - Water-stage recorder. Datum of gage is 1,709.51 ft above NGVD of 1929 (U. S. Army Corps of Engineers bench mark).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 18,400 ft³/s Dec. 22, 1964, gage height, 20.06 ft, from floodmark, from rating curve extended above 7,600 ft³/s on basis of slope-area measurement of peak flow; minimum discharge, 157 ft³/s Oct. 21-23, 25, 26, 2018.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -
WATER TEMPERATURE: November 1957 to September 1987, December 2000 to current year.
TURBIDITY: November 2000 to September 2006.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum, 17.0°C July 8, 1968, July 19, 20, 1979; minimum, 0.0°C Dec. 7-11, 1972, Dec. 30, 1978, Jan. 1, 1979, Jan. 4, 1982, Dec. 24, 1983, Feb. 26, 2011, Dec. 8, 2013.
TURBIDITY: Maximum, 334 FNU Dec. 30, 2005; minimum, <1 FNU on many days each year.