LOCATION.-- Latitude 41°54'23", longitude 88°08'15" (NAD of 1927), in SE1/4NW1/4SE1/4 sec.31, T.40 N., R.10 E., Du Page County, Hydrologic Unit 07120004, on Kuhn Road 100 ft north of State Highway 64, and located on the north side of the main building of the Carol Stream Wastewater Treatment Facility, at Carol Stream.

PERIOD OF RECORD.--

PRECIPITATION: July 1997 to current year.

GAGE.-- A 6-in.-diameter, unheated, tipping-bucket rain gage.

REMARKS.-- Snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as temperatures rise. Snowfall-affected data are subject to appreciable errors.

EXTREMES FOR PERIOD OF RECORD.--

PRECIPITATION: Maximum daily total, 2.51 in., October 13, 2001.