PROVISIONAL DATA SUBJECT TO REVISION

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

14153500  COAST FORK WILLAMETTE RIVER BELOW COTTAGE GROVE DAM, OR 

LOCATION.--Lat 43° 43'15", long 123° 02'55", in NE 1/4 sec.28, T.21 S., R.3 W., 
   Lane  County, Hydrologic Unit 17090002, on right bank at bridge 0.3 mi downstream 
   from Cottage Grove Dam, 5.5 mi south of Cottage Grove, and at mile 29.4.
DRAINAGE AREA.--104 mi2.
PERIOD OF RECORD.--January 1939 to current year. Prior to October 1944, published as 
   "near Cottage Grove."
GAGE.--Water-stage recorder. Datum of gage is 711.00 ft above NGVD of 1929 (Corps of 
   Engineers bench mark). Jan. 1 to Oct. 12, 1939, nonrecording gage and Oct. 13, 1939, 
   to Sept. 30, 1944, water-stage recorder at several sites and datums 0.8 mi downstream.
REMARKS.--Flow regulated since 1942 by Cottage Grove Lake (station 14153000). Small 
   diversions for irrigation upstream from station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 5,910 ft3/s Dec. 24, 1964, 
   gage height, 11.83 ft; no flow July 5-7, 1945, and for part of Aug. 24, 1947.