LOCATION.-- Lat 42°17'19", long 89°03'55", (NAD 1927) in SW1/4SW1/4 sec.13, T.44 N., R.1 E., Winnebago County, Hydrologic Unit 07090005, at bridge on Auburn St., 700 ft. downstream from Spring Creek, 2.25 mi upstream of Rockford dam, and at mile 139.0.

DRAINAGE AREA.-- 6,528 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

STAGE: August 2002 to current year.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 700.00 ft above NGVD of 1929.

REMARKS.--Stages regulated by power plant 17 mi. upstream of gage.

EXTREMES FOR PERIOD OF RECORD.--

STAGE: Maximum gage height, 4.84 ft, June 12, 2004; minimum, 1.65 ft, January 7, 2004.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data