LOCATION.-- Latitude 42°03'54", longitude 88°17'05" (NAD of 1927), in SW1/4NE1/4NE1/4 sec.2, T.41 N., R.8 E., Kane County, Hydrologic Unit 07120006, within the water-treatment facility on the south side of the frontage road (along the south side of U.S. Highway 90), approximately 0.5 mi east of State Highway 31 at Elgin.

PERIOD OF RECORD.--

PRECIPITATION: March 1989 to September 1995 and March 1997 to current year.

GAGE.-- A 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, 4.22 in.(estimated), August 22, 2002.