USGS Water-Year Summary for Site 14189000

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

14189000 SANTIAM RIVER AT JEFFERSON, OR

LOCATION - Lat 44°42'53.0", long 123°00'51.3" referenced to North American Datum of 1983, Marion County, OR, Hydrologic Unit 17090005, on left bank, 25 ft upstream from Jefferson Hwy bridge at Jefferson, 2.1 mi downstream from confluence of North and South Santiam Rivers and at mile 9.6.

DRAINAGE AREA - 1,790 mi². approximately.

REVISIONS HISTORY -

WSP 904: Drainage area. WSP 1094: 1908, 1910, 1912, 1943. WSP 1248: 1911, 1915-16(M). WSP 1935: 1909, WDR OR-93-1: 1974.

Revision: On July 27, 2023, annual peak gage height for water year 1910 was converted back to its originally reported value for the location and datum then in use.

Revision: On July 27, 2023, annual peak gage heights for water years 1912-1916 were converted back to their originally reported values for the location and datum then in use.

Revision: On July 27, 2023, annual peak gage height for water year 1922 was converted back to its originally reported value for the location and datum then in use.

Revision: On July 27, 2023, annual peak gage height for water year 1940 was converted back to its originally reported value for the location and datum then in use.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1905 to June 1906 (gage heights and discharge measurements only), October 1907 to September 1916, October 1939 to current year. Gage-height records collected at same site since 1907 are contained in reports of the National Weather Service.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 199.63 ft above NGVD of 1929. Prior to Sept. 22, 1940, nonrecording gages at sites within 350 ft downstream at datum 3.00 ft higher. Prior to Sept. 2, 2008, at site 0.1 mi upstream at same datum.

REMARKS - Flow regulated since 1953 by Detroit Lake (active capacity, 340,100 acre-ft) and Big Cliff Reservoir (active capacity for reregulating purpose, 2,930 acre-ft) and since 1966 by Green Peter and Foster Lakes (combined active capacity, 364,000 acre-ft). Salem Canal diverts from North Santiam River at Stayton for irrigation and power; most of this water reaches Willamette River by way of Mill Creek at Salem. Stayton Canal diverts from North Santiam River at Stayton for irrigation of lands near town of West Stayton; some return flow reaches North Santiam River upstream from station. Albany power canal diverts from South Santiam River at Lebanon; return flow reaches Willamette River at Albany. Continuous water-quality records for period October 1963 to September 1987 have been collected at this location. Periodic suspended sediment data are available for period October 1991 to September 1993.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood stage of 25.0 ft was reached in December 1861 and 23.4 ft in February 1890 (information from U.S. Army Corps of Engineers). Flood of Nov. 21, 1921, reached a stage of 19.5 ft at gage on railroad bridge 25 ft upstream, corresponding gage height at present site and datum, 24.4 ft, from curve of relation, discharge, 202,000 ft³/s.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 197,000 ft³/s Dec. 22, 1964, gage height, 24.22 ft; minimum discharge observed, 260 ft³/s Aug. 15-22, Aug. 24 to Sept. 2, 1940.