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USGS Water-Year Summary 2024
14321000 UMPQUA RIVER NEAR ELKTON, OR
LOCATION - Lat 43°35'10", long 123°33'15" referenced to North American Datum of 1927, in NW 1/4 sec.08, T.23 S., R.7 W., Douglas County, OR, Hydrologic Unit 17100303, on left bank, 3.5 mi south of Elkton, 8.3 mi upstream from Elk Creek and at mile 56.9.
DRAINAGE AREA - 3,683 mi².
REVISIONS HISTORY -
WSP 1184: 1927(M), 1938(M), 1943(M), 1946(M). WSP 1448: 1911-13, drainage area.
Revision: Annual maximum gage-height for water year 1986 was revised on Nov. 7, 2023, based on further review of the annual peak gage-height record.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1905 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 90.42 ft above NGVD of 1929. Prior to June 29, 1972, at site 2,400 ft downstream at same datum. See WSP 1931 or 2135 for additional history of changes prior to June 29, 1972.
REMARKS - Regulation by powerplants on North Umpqua River ordinarily does not affect discharge at this station. Diversions for irrigation upstream from station. Continuous water temperature records for period April 1971 to September 1992 have been collected at this location.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least December 1861, 51.95 ft Dec. 23, 1964.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 265,000 ft³/s Dec. 23, 1964, gage height, 51.95 ft, from floodmarks; minimum discharge observed, 640 ft³/s July 18, 1926.
