LOCATION.-- Latitude 41°44'30", longitude 88°03'56" (NAD of 1927), in NE1/4NW1/4NW1/4 sec.35, T. 38 N., R.10 E., Du Page County, Hydrologic Unit 07120004, on State Highway 53 0.5 mi south of 75th Street, and located at the Woodridge Wastewater Treatment Facility at Woodridge.

PERIOD OF RECORD.--

PRECIPITATION: July 1997 to current year.

GAGE.-- A 12-in.-diameter, heated, 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, 6.77 in., August 4, 1998.