USGS Water-Year Summary 2020
14168000 FERN RIDGE LAKE NEAR ELMIRA
LOCATION - Lat 44°07'15", long 123°18'00" referenced to North American Datum of 1927, in sec.04, T.17 S., R.5 W., Lane County, OR, Hydrologic Unit 17090003, in control house at spillway section of dam across Long Tom River and Coyote Creek, 4.5 mi northeast of Elmira and at mile 25.7.
DRAINAGE AREA - 252 mi². not including Amazon Creek basin.
PERIOD OF RECORD - November 1941 to September 2003, August 2013 to current year. Prior to October 1971, published as Fern Ridge Reservoir near Elmira.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Army Corps of Engineers).
COOPERATION - Capacity table furnished by U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 124,500 acre-ft Dec. 27, 1955, elevation, 375.83 ft; minimum contents since first filling in 1942, 163 acre-ft Nov. 11, 1950, elevation, 344.00 ft.