Station list     Available data
ILLINOIS RIVER BASIN


05584500       LA MOINE RIVER AT COLMAR, IL

 

LOCATION.-- Lat 40°19'49", long 90°53'46" (NAD of 1927), in SE1/4SW1/4 sec.18, T.4 N., R.4 W., McDonough County, Hydrologic Unit 07130010, on right bank at downstream side of bridge on State Highway 61, 0.2 mi downstream from a railroad bridge, 1 mi southwest of Colmar, 1.8 mi upstream from Troublesome Creek, and at mile 61.8.

 

DRAINAGE AREA.-- 655 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: October 1944 to current year.

 

STAGE: Water years 1994 to current year.

SURFACE-WATER QUALITY

 

CHEMICAL: Water years 1975-91 and 1998.

 

MISCELLANEOUS: Contaminants in streambed sediments, July 1997; contaminants in fish tissue, July 1997; streambank sediment size, October 1997; streambed sediment size, October 1997.

BIOLOGICAL

 

ALGAE: Water years 1996-98.

 

BENTHIC MACROINVERTEBRATES: Water years 1996-98.

 

FISH: Water year 1997-98.

 

HABITAT: Water years 1996-98, 2003.

 

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and crest-stage gage. Datum of gage is 491.53 ft above NGVD of 1929 (491.27 ft NAVD 1988). Prior to July 13, 1945, nonrecording gage at same site and datum.

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 38,900 ft3/s, Mar. 5, 1985, gage height, 26.61 ft; maximum gage height, 27.03 ft, Jan. 3, 1965, ice jam; no flow part of each day Dec. 8, 9, 12, 13, 17, 21, 1955, due to temporary dam upstream; no flow Oct. 19, 1988.

 

REMARKS FOR CURRENT YEAR.--Algae community samples were collected as part of the National Water-Quality Assessment program (NAWQA) in the lower Illinois River Basin. A qualitative sample was collected in accordance with NAWQA protocols (Cuffney and others, 1993). The qualitative periphyton sample is a composite of all samples collected from all periphyton microhabitats present within the sampling reach. All samples were processed by the Philadelphia Academy of Natural Sciences. The reach begins 1326 ft downstream of the State Highway 61 bridge, and continues downstream 1283 ft.

PERIPHYTON ALGAE, QUALITATIVE
[The algal taxa listed below were identified at the indicated reach. sp., species; Chlorophyta, Green algae; Cyanophyta, Blue-green algae; Chrysophyta, Golden algae, for example diatoms; Cryptophyta, Cryptophytes; Euglenophyta, Euglenoids; Pyrrhophyta, Dinoflagellates; Rhodophyta, Red algae]
Phylum
Taxon
Reach A
9/11/1996
Chrysophyta
Cocconeis placentula Ehrenberg
Cyclotella meneghiniana Kützing
Fallacia tenera (Hustedt) Mann
Gomphonema parvulum (Kützing) Kützing
Gyrosigma acuminatum (Kützing) Rabenhorst
Gyrosigma exilis (Grunow) Reimer
Hippodonta capitata (Ehrenberg) Lange-Bertalot, Metzeltin et Witkowski
Navicula capitatoradiata Germain
Navicula cari Ehrenberg
Navicula cincta var. minuta Skvortzow
Navicula cryptocephala Kützing
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot
Navicula rostellata Kützing
Nitzschia capitellata Hustedt
Psammodictyon constrictum (Gregory) Mann
Psammothidium marginulatum (Grunow) Bukhtiyarova et Round
Reimeria sinuata (Gregory) Kociolek et Stoermer
Surirella angusta Kützing


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data