LOCATION.-- Lat 38°37'38", long 89°59'04" (NAD of 1927), in NW1/4NW1/4 sec. 15, T. 2 N., R. 8 W., St Clair County, Hydrologic Unit 07140101, at culvert on State Highway 159, 3.0 mi south of Collinsville.

DRAINAGE AREA.-- 1.62 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

PARTIAL RECORD: Annual maximum, water years 1959 to 1972.

GAGE.-- Crest-stage gage. Datum not determined.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 613 ft³/sec, June 30, 1960, gage height, 17.89 ft.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data