LOCATION.-- Lat 42°30'36", long 89°48'05" (NAD of 1983), in NE 1/4 SE 1/4 sec.32, T.1 N., R.6 E., Green County, Hydrologic Unit 07090003, on right bank 8 ft downstream from highway bridge in Martintown, 0.4 mi upstream from Wisconsin-Illinois State line and 8.7 mi downstream from Skinner Creek.

DRAINAGE AREA.-- 1,034 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1939 to current year.

REVISED RECORDS.-- WSP 1308: 1949-50(M). WDR WI-71-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 757.83 ft above NGVD of 1929 (757.49 ft NAVD 1988). Prior to Jan. 6, 1940, nonrecording gage at site 400 ft downstream at same datum. From Jan. 6, 1940 to Nov. 12, 2004, recording gage at site 400 ft downstream at same datum. Auxiliary wire-weight gage 1.3 mi downstream at same datum.

REMARKS.-- Diurnal fluctuation at low flow may occur from powerplant operations in Argyle, 28.1 mi upstream.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 15,100 ft³/s, July 1, 1969, gage height, 21.46 ft; no flow, December 14, 1939, result of regulation.