PROVISIONAL DATA SUBJECT TO REVISION

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

14148000  MIDDLE FORK WILLAMETTE RIVER BELOW NORTH FORK, NEAR OAKRIDGE, OR

LOCATION.--Lat 43° 48'05", long 122° 33'35", in SW 1/4 sec.27, T.20 S., R.2 E., 
Lane County, Hydrologic Unit 17090001, on left bank 0.5 mi downstream from Whitehead Creek, 
4.2 mi downstream from North Fork of Middle Fork Willamette River, 7.0 mi northwest of 
Oakridge, and at mile 220.2.
DRAINAGE AREA.--924 mi2.
PERIOD OF RECORD.--March 1911 to September 1912, July 1923 to current year. Monthly 
discharge only for some periods, published in WSP 1318. Published as "near Hazeldell", 
1911-12 and as "at Eula", 1923-50.
GAGE.--Water-stage recorder. Datum of gage is 934.76 ft above NGVD of 1929. 
Mar. 22, 1911, to Sept. 30, 1912, nonrecording gage at site 4.0 mi upstream, just downstream 
from North Fork at different datum. July 1, 1923, to Aug, 11, 1935, nonrecording gage and 
Aug. 12, 1935, to Sept. 30, 1950, water-stage recorder at site 4.0 mi downstream at 
different datum.
REMARKS.--Flow regulated since 1961 by Hills Creek Lake (station 14145100); slight 
regulation at times by logponds upstream from station. No diversion upstream from station.
Continuous water-quality records for the period September 1950 to September 1987 have been 
collected at this location.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 81,800 ft3/s Dec. 28, 1945, gage 
height, 18.8 ft, from floodmark, site and datum then in use, from rating curve extended above 
39,000 ft3/s; minimum discharge, 322 ft3/s Aug. 30, 1961, caused by 
closing outlet gates at Hills Creek Dam.

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