USGS Water-Year Summary 2024
14188800 THOMAS CREEK NEAR SCIO, OR
LOCATION - Lat 44°42'44", long 122°46'08" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.11, T.10 S., R.1 W., Linn County, OR, Hydrologic Unit 17090006, on right bank, at State Highway 226, 13 mi upstream from Mill Creek, 3.9 mi east of Scio and at mile 14.2
DRAINAGE AREA - 109.73 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1962 to September 1987, October 2002 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 370 ft above NGVD of 1929, from topographic map. October 1962 to September 1987, at site 0.4 mi upstream, on left bank, at datum 380.84 ft above NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 27,400 ft³/s Dec. 22, 1964, gage height, 18.44 ft, site and datum then in use, from rating curve extended above 7,200 ft³/s on basis of slope-area measurement of peak flow; maximum gage height, 20.08 ft Jan. 19, 2012; minimum discharge, 3.4 ft³/s Sept. 6, 2003.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: October 2023 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 27.0°C Aug. 2, 2024; minimum, 2.7°C Nov. 27, 29, 2023.