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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
415057087524801 RAIN GAGE AT WESTCHESTER, IL
LOCATION - Lat 41°50'57", long 87°52'48" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SW 1/4 sec.21, T.39 N., R.12 E., Cook County, IL, Hydrologic Unit 07120004,
SURFACE-WATER RECORDS
PERIOD OF RECORD - Data collection began 25 June 2020 to present.
CLIMATOLOGICAL RECORDS
INSTRUMENTATION - A 30-watt solar panel with voltage regulator, a Campbell Scientific Inc. CR-310/CELL-210 datalogger/modem combo, and an OTT Pluvio 2L weighing bucket precipitation gage.
EXTREMES FOR PERIOD OF RECORD -
Precipitation:
The maximum daily precipitation was 2.37 inches on June 26, 2021.
The maximum annual precipitation was 33.30 inches in water year 2021.
Air Temperature:
The maximum air temperature recorded was 39.9 degrees C on June 11, 2021.
The minimum air temperature recorded was -19.9 degrees C on February 7, 2021.
REMARKS - This gage is operated as part of Lake Michigan Diversion Accounting and is funded by the U.S. Army Corps of Engineers
