LOCATION.-- Lat 42°36'42", long 89°23'53" (NAD of 1927), in SW 1/4 sec.26, T.2 N., R.9 E., Green County, Hydrologic Unit 07090004, on left bank at downstream side of highway bridge, 1.2 mi southwest of Brodhead, and 1.9 mi upstream from Sylvester Creek.

DRAINAGE AREA.-- 523 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: January 1914 to current year. Monthly discharge for January and February 1914 published in WSP 1308.

REVISED RECORDS.-- WSP 1238: 1914-16, 1918, 1922, 1927, 1933. WSP 1508: 1916-17(M), 1919(M), 1920, 1921(M), 1927-28(M), 1930(M), 1931, 1936(M), 1943(M). WDR WI-73-1: Drainage area.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 768.14 ft above NGVD of 1929 (767.88 ft NAVD 1988). Prior to Oct. 17, 1938, nonrecording gage 20 ft upstream at same datum.

REMARKS.-- Some regulation from dam and non-operational powerplant upstream.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 14,800 ft³/s. September 13, 1915, from rating curve extended above 7,500 ft³/s, gage height, 11.40 feet, from floodmarks; minimum discharge, 35 ft³/s, September 19, 1959.