Station list     Available data
ILLINOIS RIVER BASIN


05533000       FLAG CREEK NEAR WILLOW SPRINGS, IL

 

LOCATION.-- Lat 41°44'20", long 87°53'47" (NAD of 1927), in SE1/4NE1/4 sec.31, T.38 N., R.12 E., Cook County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on German Church Road, 1.1 mi northwest of Willow Springs, and at mile 2.2.

 

DRAINAGE AREA.-- 16.5 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: July 1951 to current year.

 

STAGE: Water years 1994 to current year.

SURFACE-WATER QUALITY

 

MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000.

BIOLOGICAL

 

ALGAE: Pigment and biomass, Water year 2000.

 

BENTHIC MACROINVERTEBRATES: Water year 2000.

 

FISH: Water year 2001.

 

HABITAT: Water year 2000.

 

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

 

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 606.36 ft above NGVD of 1929. Prior to June 17, 1963, water-stage recorder at same site at datum 3.73 ft higher. June 17, 1963, to June 26, 1964, nonrecording gage at site 0.5 mi upstream at datum 4.82 ft higher.

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,680 ft3/s, Sept. 14, 1961, gage height, 13.71 ft, present datum; minimum daily, 0.1 ft3/s, Dec. 9, 1957.




Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data