PROVISIONAL DATA SUBJECT TO REVISION

Station operated in cooperation with the U.S. Army Corps of Engineers.

14189000  SANTIAM RIVER AT JEFFERSON, OR

LOCATION.--Lat 44° 42'55", long 123° 00'40", in SE 1/4 sec.11, T.10 S., R.3 W., 
Marion County, Hydrologic Unit 17090005, on right bank 350 ft upstream from 
Southern Pacific railroad bridge at Jefferson, 2.1 mi downstream from 
confluence of North and South Santiam Rivers, and at mile 9.62.
DRAINAGE AREA.--1,790 mi2, approximately.
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 National Weather Service.
GAGE.--Water-stage recorder. 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.
REMARKS.--Flow regulated since 1953 by Detroit Lake (station 14180500), since 
1966 by Green Peter Lake (station 14186100) and by Foster Lake (station 14186600). 
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 
the period October 1963 to September 1987 have been collected at this location. 
Water temperature data for the period October 2000 to June 2001 available in the 
files of the Portland Field Office. Periodic suspended sediment data are available 
for the period October 1991 to September 1993.
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.
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 Corps of Engineers). 
 On Nov. 21, 1921, the stage reached 19.5 ft at gage on railroad bridge 350 ft
 downstream, corresponding gage height at present site and datum, 24.4 ft, from 
curve of relation, discharge, 202,000 ft3/s.

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