PROVISIONAL DATA SUBJECT TO REVISION

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

14169000  LONG TOM RIVER NEAR ALVADORE, OR

LOCATION.--Lat 44° 07'25", long 123° 17'55", in SW 1/4 NE 1/4 sec.4, T.17 S., R.5 W., Lane County, 
Hydrologic Unit 17090003, on left bank 0.2 mi downstream from Fern Ridge Dam, 1.7 mi west of Alvadore, 
and at mile 25.5.
DRAINAGE AREA.--252 mi2, not including Amazon Creek basin.
PERIOD OF RECORD.--August 1939 to current year. Prior to October 1943, published as "at 
Smithfield," and October 1943 to September 1959, as "below Fern Ridge Dam, near Smithfield." Prior 
to October 1985, published figures included diversion from Fern Ridge Reservoir into Coyote Creek 
channel (station 14169001).
GAGE.--Water-stage recorder and masonry control. Datum of gage is 332.00 ft above NGVD of 1929 
(levels by Corps of Engineers). Prior to Sept. 21, 1939, nonrecording gage and Sept. 21, 1939, to 
Sept. 30, 1943, water-stage recorder at site 2.5 mi downstream at datum 11.09 ft lower.
REMARKS.--Flow regulated since 1941 by Fern Ridge Lake (station 14168000). Several small 
diversions for irrigation upstream from station. Approximately 7 ft3/s diverted from Fern Ridge 
Reservoir into Coyote Creek channel. Discharge not adjusted for storage or release from Fern Ridge 
Lake as evaporation from reservoir at times exceeds natural flow and diversions, and beginning in 
November 1951, most of flow of Amazon Creek has been diverted into Fern Ridge Lake.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,500 ft3/s Jan. 1, 1943, gage 
height, 15.12 ft, site and datum then in use; minimum daily discharge, 2 ft3/s Aug. 7, 1941.

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