LOCATION.-- Latitude 41°58'01", longitude 88°09'57" (NAD of 1927), in SE1/4SE1/4NE1/4 sec.11, T.40 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on Stearns Road 0.7 mi west of Jefferson Road, and located on the building next to the overflow settlement tanks of the Bartlett Wastewater Treatment Facility, near Bartlett.

PERIOD OF RECORD.--

PRECIPITATION: July 1997 to current year.

GAGE.-- An 8-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, 3.20 in., August 22, 2002.