LOCATION.--Lat 45°23'14", long 87°42'07", in SE 1/4 NE 1/4, sec.36, T. 35 N., R .28 W., Michigan Meridian, Menominee County, MI, Hydrologic Unit 04030108, on left upstream bank 30 ft from river and 18 ft west of County Trunk JJ (Koss) bridge, 0.3 mi. southeast of Koss and 3.4 mi upstream of Grand Rapids.
DRAINAGE AREA.-- 3,700 square miles.
PERIOD OF RECORD.-- July 1907 to March 1909 monthly discharge only (published as "at Koss"), July 1913 to September 1981 (published as 04067000 Menominee River below Koss, MI), June 1998 to current year. Records prior to October 1913 published in WSP 244, 264, and 384.
REVISED RECORDS.--WRD WI-80-1: Drainage area.
GAGE.--Water-stage recorder and acoustic velocity meter. Elevation of gage is 655.36 +/-0.02 ft NAVD88 from Aeropoint GPS survey. June 1913 to September 1981, headwater and tailwater gages and generation data entered hourly in daily log sheet by Wisconsin Public Service Corp. employees at powerplant 4 mi downstream. Records of daily discharge furnished by Wisconsin Public Service Corp. Prior to June 1913, chain gage on railroad bridge at Koss.
REMARKS.--Flow regulated by powerplants and by Michigamme Reservoir, capacity, 119,950 acre-ft, and Peavy Pond, capacity, 33,860 acre-ft, on the Michigamme River, and by many smaller reservoirs above station. Gage-height telemeter at station.
Use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
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