Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
14191000 WILLAMETTE RIVER AT SALEM, OR
LOCATION - Lat 44°56'40", long 123°02'30" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.22, T.7 S., R.3 W., Marion County, OR, Hydrologic Unit 17090007, on right bank, 300 ft upstream from Center Street Bridge in Salem and at mile 84.16.
DRAINAGE AREA - 7,280 mi². approximately.
REVISIONS HISTORY - WSP 1318: 1915(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1909 to December 1916, January 1923 to current year. Monthly discharge only January 1923 to September 1927, published in WSP 1318. Gage-height records collected at about same site since 1892 are contained in reports of National Weather Service.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 106.14 ft above NGVD of 1929. Oct. 1, 1909 to Dec. 31, 1916, nonrecording gage at site 0.5 mi upstream at datum 8.00 ft higher. Jan. 1, 1923 to Nov. 26, 1934, nonrecording gage at Center Street Bridge at datum 8.00 ft higher. Nov. 27, 1934 to Sept. 30, 1962, water-stage recorder at present site at datum 8.00 ft higher.
REMARKS - Flow regulated by several reservoirs upstream from station. Many small diversions for irrigation upstream from station; part of flow of Salem Canal, which diverts water from North Santiam River, returns to Willamette River downstream from station through Mill Creek at Salem. Periodic suspended sediment data are available for period October 1991 to September 1993.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge, 500,000 ft³/s Dec. 4, 1861, gage height, about 47 ft present datum, from rating curve extended above 250,000 ft³/s in 1916. Floods of Jan. 16, 1881 and Feb. 5, 1890, reached stages of 44.3 ft, discharge, 428,000 ft³/s and 45.1 ft, discharge, 448,000 ft³/s, respectively, from floodmarks and information by U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 348,000 ft³/s Jan. 8, 1923, gage height, 38.3 ft, present datum; minimum discharge, 2,470 ft³/s Aug. 27, 1940, gage height, 3.55 ft, present datum.
