LOCATION.-- Latitude 41°47'47", longitude 87°58'27" (NAD of 1927), in SW1/4SW1/4NW1/4 sec. 10, T.38 N., R.11 E., Du Page County, Hydrologic Unit 07120004, on Burlington Avenue 500 ft east of Cass Avenue, and located at the Westmont Water Department at Westmont.

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, 2.94 in., October 17, 1998.