LOCATION.-- Lat 41°58'19", long 88°16'47" (NAD of 1983), in SW1/4SW1/4 sec. 12, T.40 N., R. 8 E., Kane County, Hydrologic Unit 07120007, on private property about 500 feet upstream of state Highway 25 at Valley View, 2.5 miles southeast of South Elgin, and at mile 0.8.

DRAINAGE AREA.-- 14.0 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: May 2002 to current year.

STAGE: May 2002 to current year.

PARTIAL RECORD: Annual maximum, water years 1962 to 1979, at site 500 ft downstream on State Highway 25 and at datum 10.08 ft higher.

SURFACE-WATER QUALITY

SEDIMENT: June 2002 to current year.

MISCELLANEOUS: Sediment concentration and particle size, water years 2002-04.

PRECIPITATION: May 2002 to current year.

REVISED RECORDS.-- WDR IL-75-1:Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, automatic water sampler, and rain gage. Datum of gage is 700.00 ft above NAVD of 1988 (700.25 ft NGVD 1929). Prior to May 3, 2002, at site 500 ft downstream and at datum 10.08 ft higher.

REMARKS.-- Occasional pumpage from quarry into creek about 0.5 mi. upstream. Collection, computation and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 687 ft³/s, June 10, 1967, gage height, 1.65 ft, site and datum then in use; no flow, many days in 2005.

PRECIPITATION: Maximum daily total, 3.32 in., August 13, 2002.

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 1450 mg/L, Mar. 29, 2004; minimum daily, 0 mg/L, many days during July to Sept. 2005.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 217 tons, Mar. 29, 2004; minimum daily, 0 tons, many days during July to Sept. 2005.