USGS Water-Year Summary 2019
06861500 CEDAR BLUFF RESERVOIR NEAR ELLIS, KS
LOCATION - Lat 38°47'21", long 99°43'13" referenced to North American Datum of 1927, in NE 1/4 SW 1/4 sec.36, T.14 S., R.22 W., Trego County, KS, Hydrologic Unit 10260003, in control house structure of outlet works conduit at dam on Smoky Hill River, 18 mi southwest of Ellis, and at mile 333.7.
DRAINAGE AREA - 5,530 mi², approximately.
PERIOD OF RECORD - November 1950 to current year. Monthly records only prior to August 1960.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by Bureau of Reclamation). Prior to Aug. 20, 1960, nonrecording mercury-column gage at same site and datum.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 2,154.90 ft, July 2, 1951, July 4, 5, 1957, contents, 269,400 acre-ft; minimum elevation since irrigation pool was first filled, 2,092.20 ft, Sept. 28, 1992, contents, 10,450 acre-ft.