USGS Water-Year Summary 2019
04057811 GREENWOOD RESERVOIR NEAR GREENWOOD, MI
LOCATION - Lat 46°26'32", long 87°48'02" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.27, T.47 N., R.28 W., Marquette County, MI, Hydrologic Unit 04030110, at control structure on Middle Branch Escanaba River, 3.7 mi southwest of Greenwood.
DRAINAGE AREA - 67.4 mi².
PERIOD OF RECORD - December 1972 to current year. Prior to October 1997, month end elevations and contents only.
GAGE - Water-stage recorder. Datum of gage is 1,400.00 ft above NGVD 1929 (levels by Cleveland-Cliffs Inc.); EXTREMES reported below have been converted to sea level elevations. Prior to Feb. 20, 1973, nonrecording gage at same site and datum.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 1,517.42 ft, Oct. 12, 2018; minimum since first filling, 1,491.1 ft, Mar. 12, 1977.