LOCATION.-- Latitude 41°50'37", longitude 88°11'06" (NAD of 1927), in SW1/4SW1/4SW1/4 sec.23, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on Mack Road 1 mi east of State Highway 59, and located on the north side of the roof of the Blackwell Forest Preserve maintenance building near Warrenville. | |
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, 5.06 in., September 11, 2000. |