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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
14184100 NORTH SANTIAM RIVER AT GREENS BRIDGE, NEAR JEFFERSON, OR
LOCATION - Lat 44°42'28.6", long 122°58'23.2" referenced to North American Datum of 1983, Linn County, OR, Hydrologic Unit 17090005, SE 1/4, Sec.7, T.10 S., R. 2 W, on right bank, 5 ft downstream from Greens Bridge, 2 mi east of Jefferson, 3 mi upstream from confluence with South Santiam River and at mile 14.6.
DRAINAGE AREA - 736 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1964 to September 1968 (fragmentary), October 2005 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 231.54 ft above NAVD of 1988 determined by GNSS Level II survey.
REMARKS - Flow regulated by Detroit Lake (active capacity, 340,100 acre-ft) and Big Cliff Reservoir (active capacity for reregulating purposes, 2,930 acre-ft). Diversions at Stayon for irrigation and power generation. Farmland upstream from station irrigated by undetermined amount of water pumped directly from river or from wells near river.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 30,700 ft³/s Jan. 17, 2011, gage height, 25.92 ft; minimum discharge, 505 ft³/s Aug. 4, 2009.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: April 1985 to November 1986, June 2009 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 26.1°C July 29, 2009; minimum, 1.2°C Feb. 6, 2014.
