LOCATION.-- Lat 43°03'12", long 88°11'41" (NAD of 1927), in NW1/4 SE1/4 sec.24, T.7N., R.19E., Waukesha County, Hydrologic Unit 07120006, on left bank at upstream side of Watertown Road bridge, 3.5 mi northeast of Waukesha.

DRAINAGE AREA.-- 77.4 mi²

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: December 1992 to September 2000 (discontinued).

SURFACE-WATER QUALITY

MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000.

BIOLOGICAL

BENTHIC MACROINVERTEBRATES: Water year 2000.

FISH: Water year 2001.

HABITAT: Water year 2000.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Elevation of gage is 820 ft above sea level, from NGVD of 1929.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1430 ft³/s, Aug. 8, 1998, gage height, 12.07 ft; minimum discharge, 13 ft³/s, Sept. 16, 1995.

REMARKS FOR CURRENT YEAR.--Fish community samples were collected as part of the National Water-Quality Assessment program (NAWQA) in the upper Illinois River Basin. Collections were made with a single pass of the entire reach with a barge or a backpack electroshocker with supplementary seine hauls and kicks. Fishes were identified in the field by D.J. Sullivan, U.S. Geological Survey, Madison, Wisconsin. Reach A begins 43 feet upstream of Watertown Road and continues upstream for 853 feet.