Station list     Available data
ILLINOIS RIVER BASIN


05570350       BIG CREEK AT ST. DAVID, IL

 

LOCATION.-- Lat 40°29'51", long 90°03'12" (NAD of 1927), in SE1/4SE1/4 sec.16, T.6 N., R.4 E., Fulton County, Hydrologic Unit 07130005, on right bank 40 ft upstream from highway bridge at north edge of St. David, 4.5 mi upstream from Evelyn Branch and at mile 19.2.

 

DRAINAGE AREA.-- 28.0 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: November 1971 to December 1985.

SURFACE-WATER QUALITY

 

CHEMICAL: Water years 1975-86.

 

SEDIMENT: Water years 1977-80.

 

SPECIFIC CONDUCTANCE: Water years 1972-83.

 

WATER TEMPERATURE: Water years 1972-83.

 

REVISED RECORDS.-- WDR IL-81-2: Drainage area.

 

GAGE.-- Water-stage recorder, specific conductance and temperature recorder. Datum of gage is 548.88 ft above NGVD of 1929.

 

REMARKS.-- Suspended-sediment samples were collected by a local observer on a daily basis with additional samples collected during high runoff periods.

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,080 ft3/s, June 23, 1974, gage height, 10.25 ft; maximum gage height, 10.54 ft, June 2, 1980; minimum daily discharge, 1.4 ft3/s, Oct. 1, 4-6, 1984.

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,860 mg/L July 27, 1976; minimum daily mean, 3 mg/L Dec. 17, 18, 1979.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 6,660 tons June 22, 1974; minimum daily, 0.03 ton Dec. 17, 18, 1979.




Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data