USGS Water-Year Summary 2021
14144900 HILLS CREEK ABOVE HILLS CREEK RESERVOIR, NEAR OAKRIDGE, OR
LOCATION - Lat 43°40'50", long 122°22'10" referenced to North American Datum of 1927, Lane County, OR, Hydrologic Unit 17090001, in Willamette National Forest, on right bank, 0.2 mi downstream from Tufti Creek, 0.7 mi upstream from Hills Creek Lake, 6.5 mi southeast of Oakridge and at mile 4.1.
DRAINAGE AREA - 52.7 mi².
PERIOD OF RECORD - October 1958 to September 1981, June 2010 to current year (gage heights only). Published as "above Hills Creek Reservoir" prior to October 1971 and as "above Hills Creek Lake" October 1971 to September 1981.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,620.80 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to June 16, 2010, at datum 10 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 22.23 ft Dec. 22, 1964, present datum; minimum gage height since June 2010, 9.17 ft Oct. 6-10, 2015.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 1958 to September 1981, June 2010 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 22.5°C Aug. 7, 1972; minimum, -0.1°C Dec. 7, 2013.