Station list     Available data
ILLINOIS RIVER BASIN


05553500       ILLINOIS RIVER AT OTTAWA, IL

 

LOCATION.-- Lat 41°20'17", long 88°51'10" (NAD of 1927), in SW1/4SW1/4 sec.11, T.33 N., R.3 E., LaSalle County, Hydrologic Unit 07130001, downstream of the railroad bridge, 0.25 miles, and downstream 0.5 miles of the Route 23 bridge in Ottawa and the confluence with the Fox River.

 

DRAINAGE AREA.-- 10,949 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: March 11, 1903 to December 31, 1903.

 

PARTIAL RECORD: Miscellaneous discharge measurements, water years 1903-1904.

SURFACE-WATER QUALITY

 

CHEMICAL: Water years 1997 to 2004.

 

MISCELLANEOUS: Contaminants in streambed sediments, August 1998; contaminants in fish tissue, August, 1998.

BIOLOGICAL

 

ALGAE: Water years 1997-99 and 2002-04.

 

BENTHIC MACROINVERTEBRATES: Water years 1998-99, 2002-04.

 

FISH: Water years 1998-99, 2002-04.

 

HABITAT: Water years 1998-2000, 2003.

 

GAGE.-- Prior to November 1, 1903, vertical staff at west end of first pier from the north abutment of the railroad bridge at same datum. November 1, 1903 to February 21, 1904, chain gage read twice daily. Datum of gage is 579.48 ft above NGVD of 1929 (579.30 ft NAVD 1988).

 

REMARKS.-- Discharges for surface-water quality data for water years 1997 to current are computed by adding discharges of Illinois River at Marseilles (05543500) and Fox River at Dayton, IL (05552500).

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 46,900 ft3/s, Apr. 15, 1903, gage height, -119.08 ft (460.40 ft above NGVD of 1929); minimum discharge, 6,740 ft3/s, Sept. 8, 1903.

 

REMARKS FOR CURRENT YEAR.--Algae community samples were collected as part of the National Water-Quality Assessment program (NAWQA) in the upper 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. Reach A begins at the red buoy near river mile 239, marking the top of Hitt Island, and continues downstream for 3281 ft, which is 492 ft downstream of the Ottawa navigation light number 238.5.

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
7/20/1999
Chlorophyta
Cladophora sp.
Crucigenia rectangularis (Braun) Gay
Pediastrum duplex Meyen
Scenedesmus acuminatus (Lagerheim) Chodat
Scenedesmus bijuga (Turpin) Lagerheim
Scenedesmus bijuga var. alternans (Reinsch) Hansgirg
Scenedesmus quadricauda var. quadrispina (Chodat) GM Smith
Scenedesmus sp.
Stigeoclonium sp.
Unknown Chlorophyte coccoid (3-5µ)
Chrysophyta
Achnanthidium minutissimum (Kützing) Czarnecki
Amphora pediculus (Kützing) Grunow
Amphora veneta Kützing
Aulacoseira ambigua (Grunow) Simonsen
Aulacoseira granulata var. angustissima (Müller) Simonsen
Aulacoseira muzzanensis (Meister) Krammer
Bacillaria paradoxa Gmelin
Cocconeis pediculus Ehrenberg
Cocconeis placentula var. lineata (Ehrenberg) Van Heurck
Craticula accomoda (Hustedt) Mann
Craticula molestiformis (Hustedt) Lange-Bertalot
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson
Cyclotella atomus Hustedt
Cyclotella meneghiniana Kützing
Encyonema prostratum (Berkeley) Kützing
Gomphonema angustatum (Kützing) Rabenhorst
Gomphonema gracile Ehrenberg emend Van Heurck
Gomphonema parvulum (Kützing) Kützing
Gomphosphenia lingulatiformis (Lange-Bertalot et Reichardt) Lange-Bertalot
Gyrosigma nodiferum (Grunow) Reimer
Hippodonta capitata (Ehrenberg) Lange-Bertalot, Metzeltin et Witkowski
Karayevia clevei (Grunow) Kingston
Luticola goeppertiana (Bleisch) Mann
Luticola ventricosa (Kützing) Mann
Melosira varians Agardh
Navicula capitatoradiata Germain
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot
Navicula erifuga Lange-Bertalot
Navicula exilis Kützing
Navicula gregaria Donkin
Navicula lanceolata (Agardh) Ehrenberg
Navicula menisculus Schumann
Navicula minima Grunow
Navicula subminuscula Manguin
Navicula symmetrica Patrick
Navicula tenelloides Hustedt
Nitzschia amphibia Grunow
Nitzschia clausii Hantzsch
Nitzschia dissipata (Kützing) Grunow
Nitzschia filiformis (Smith) Van Heurck
Nitzschia filiformis var. conferta (Reichardt) Lange-Bertalot
Nitzschia frustulum (Kützing) Grunow
Nitzschia gracilis Hantzsch ex Rabenhorst
Nitzschia inconspicua Grunow
Nitzschia linearis (Agardh ex Smith) Smith
Nitzschia palea (Kützing) Smith
Nitzschia palea var. debilis (Kützing) Grunow
Nitzschia pumila Hustedt
Nitzschia sociabilis Hustedt
Pleurosira laevis (Ehrenberg) Compčre
Skeletonema potamos (Weber) Hasle
Stephanodiscus medius Hĺkansson
Surirella brebissonii Krammer et Lange-Bertalot
Surirella minuta Brébisson
Synedra ulna vars. (Nitzsch) Ehrenberg
Tabellaria fenestrata (Lyngbye) Kützing
Tabularia tabulata (Agardh) Snoeijs
Thalassiosira pseudonana Hasle et Heimdal
Thalassiosira weissflogii (Grunow) Fryxell et Hasle
Tryblionella apiculata Gregory
Tryblionella victoriae Grunow
Cyanophyta
Anabaena flos-aquae (Linnaeus) Brébisson
Gloeocapsa rupestris Kützing
Lyngbya sp.
Phormidium tenue (Agardh ex Gomont) Anagnostidis & Komárek
Unknown Cyanophyte Oscillatoriaceae sp. 1 MSU


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data