LOCATION.-- Lat 41°19'40", long 89°00'29" (NAD of 1927),in SE1/4 SW1/4 sec. 16 T.33N. R.2E., La Salle County, Hydrologic Unit 07130001, on left bank just upstream of boat launch at Starved Rock State Park 1.2 miles downstream of the lock and dam at Starved Rock.

DRAINAGE AREA.-- 11072 mi².

PERIOD OF RECORD.--

BIOLOGICAL

BENTHIC MACROINVERTEBRATES: Water year 1997.

HABITAT: Water year 1997

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data