PROVISIONAL DATA SUBJECT TO REVISION

Station operated in cooperation with Clackamas River Water Providers.

14211010  CLACKAMAS RIVER NEAR OREGON CITY, OR

LOCATION.--Lat 45° 22'46", long 122° 34'34", in SW 1/4 sec.21, T.2 S., R.2 E., 
 Clackamas County, Hydrologic Unit 17090011, on left bank 1,000 ft upstream 
 from bridge on Interstate Highway 205, at South Fork Water Board water intake 
 facility, and at mile 1.6.
DRAINAGE AREA.--940 mi2.
PERIOD OF RECORD.--June 2001 to current year.
GAGE.--Water-stage recorder.
REMARKS.--Diurnal fluctuations and regulation caused by powerplants at River 
 Mill Dam and, since 1958, North Fork Dam. Minor regulation since 1956 by Timothy 
 Lake (station 14208600). One small diversion for City of Estacada near Estacada.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 47,900 ft3/s Feb. 1, 2003, 
 gage height, 38.50 ft; minimum discharge, 518 ft3/s Sept. 6, 2003.

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