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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
14308000 SOUTH UMPQUA RIVER AT TILLER, OR
LOCATION - Lat 42°55'50", long 122°56'50" referenced to North American Datum of 1927, in NE 1/4 sec.33, T.30 S., R.2 W., Douglas County, OR, Hydrologic Unit 17100302, Umpqua National Forest, on left bank, 0.3 mi upstream from bridge on State Highway 227 at Tiller, 0.3 mi upstream from Elk Creek and at mile 187.31.
DRAINAGE AREA - 449 mi².
REVISIONS HISTORY - WSP 1448: 1911(M), 1912, drainage area. WDR-US-2013: 2013.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1910 to December 1911, October 1939 to current year. Monthly discharge only for some periods, published in WSP 1318. Prior to December 1911, published as South Fork of Umpqua River at Tiller.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 991.8 ft above NGVD of 1929 (river-profile survey). Prior to Oct. 1, 1939, nonrecording gage at site 0.2 mi downstream at different datum.
REMARKS - No regulation. Small diversions for irrigation upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 60,200 ft³/s Dec. 22, 1964, gage height, 25.72 ft; minimum discharge observed, 20 ft³/s Sept. 3, 4, 1911.
