LOCATION.-- Lat 41°49'20", long 88°19'29" (NAD of 1927), in NE¼ NE¼ sec.33, T.39N., R.8E., Kane County, Hydrologic Unit 07120007, 164 feet downstream of first low-head dam upstream of Hwy 31.

DRAINAGE AREA.-- 31.00 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, w ater year 2000.

BIOLOGICAL

ALGAE: Water year 2000.

BENTHIC MACROINVERTEBRATES: Water year 2000.

FISH: Water year 2001.

HABITAT: Water year 2000-01.

REMARKS FOR CURRENT YEAR.--Fish community samples were collected as part of the National Water-Quality Assessment program (NAWQA) in the upper Illinois River Basin. Taxonomy is based on Robins and others (1991), except where modified for the family Moronidae (Johnson, 1984) and the order Cyprinidontiformes (Parenti, 1981). Collections were made with a single pass of the entire reach with a barge or a backpack electroshocker with supplementary seine hauls and kicks. Fishes were identified by C. A. Taylor, Illinois Natural History Survey, Champaign. Reach A begins 341 feet upstream of the first low-head dam upstream of Highway 31 and continues upstream for 984 feet.