LOCATION.-- Lat 41°37'45", long 87°38'30" (NAD of 1927), in NE1/4 NW1/4 NE1/4 sec.8, T.36 N., R.14 E., Cook County, Hydrologic Unit 07120003.

DRAINAGE AREA.-- 254 mi²

PERIOD OF RECORD.--

BIOLOGICAL

ALGAE: Water year 1990.

REMARKS: Station established as a low-flow water-quality sampling site in 1990 as part of the upper Illinois River basin pilot project for the National Water-Quality Assessment Program.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data