PROVISIONAL DATA SUBJECT TO REVISION

Station funded by U.S. Geological Survey National Streamflow Information Program (NSIP).
Forecast: Additional data for this gage and others in the Willamette basin can be found at the National Weather Service.

STATION.--14191000  WILLAMETTE RIVER AT SALEM, OREGON

LOCATION.--Lat 44° 56'40", long 123° 02'30", in SE 1/4 SW 1/4 sec. 22, T.7 S., 
   R.3 W., Marion County, 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.
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 the same site since 1892 are contained 
   in reports of National Weather Service.
GAGE.--Water-stage recorder. 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 12 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.
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.
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 Corps of Engineers.

NOTE: The most current shifted rating for this site can be found at USGS Rating Depot website.