LOCATION.-- Lat 41°59'24", long 87°51'36" (NAD of 1927), in NW¼ SE¼ NW¼ sec.3, T.40N., R.12E., Cook County, Hydrologic Unit 07120004, 113 feet upstream of first bridge upstream of River Road.

DRAINAGE AREA.-- 21.7 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

PARTIAL RECORD: Miscellaneous discharge measurements, water year 2000.

SURFACE-WATER QUALITY

MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000.

BIOLOGICAL

ALGAE: Pigment and biomass, Water year 2000.

BENTHIC MACROINVERTEBRATES: Water year 2000.

FISH: Water year 2001.

HABITAT: Water year 2000.