Station list     Available data
ILLINOIS RIVER BASIN


05553800       ILLINOIS RIVER NEAR LOCK AND DAM AT STARVED ROCK, IL

 

LOCATION.-- Lat 41°19'40", long 89°00'29" (NAD of 1927),in SE1/4 SW1/4 sec. 16 T.33N. R.2E., La Salle County, Hydrologic Unit 07130001, on left bank just upstream of boat launch at Starved Rock State Park 1.2 miles downstream of the lock and dam at Starved Rock.

 

DRAINAGE AREA.-- 11072 mi2.

 

PERIOD OF RECORD.--

BIOLOGICAL

 

ALGAE: Water year 1997.

 

BENTHIC MACROINVERTEBRATES: Water year 1997.

 

HABITAT: Water year 1997

 

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 quantitative sample was collected in accordance with NAWQA protocols (Cuffney and others, 1993). The sampling reach begins at the boat ramp (1.2 mi downstream of dam) in Starved Rock State park and continues upstream for 0.8 mi around Plum Island.

PERIPHYTON ALGAE, QUANTITATIVE, DTH (Depositional-targeted habitat)
[sp., species; Chlorophyta, Green algae; Cyanophyta, Blue-green algae; Chrysophyta, Golden algae, for example diatoms; Cryptophyta, Cryptophytes; Euglenophyta, Euglenoids; Pyrrhophyta, Dinoflagellates; Rhodophyta, Red algae]
Quantitative sample
Phylum
TaxonCells
(number/cm2)		Biovolume
(biovolume/cm2)
Reach A
9/10/1997
Chrysophyta
Achnanthidium minutissimum (Kützing) Czarnecki 327.98352 17833.32273
Achnanthidium pyrenaicum (Hustedt) Kobayasi 655.97496 90857.12199
Capartogramma crucicula (Grunow ex Cleve) Ross 655.97496 1052371.755
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson 2623.91567 472167.8772
Cyclotella atomus Hustedt 18039.4262 1513084.365
Cyclotella meneghiniana Kützing 3279.89064 2834182.765
Cyclotella nana Hustedt 325037.7659 7384381.657
Cymbella affinis Kützing 655.97496 388684.8575
Gomphonema angustatum (Kützing) Rabenhorst 655.97496 205889.286
Gomphonema olivaceum (Lyngbye) Kützing 655.97496 256263.8903
Mayamaea atomus (Kützing) Lange-Bertalot 655.97496 18396.43155
Navicula erifuga Lange-Bertalot 1311.95784 574963.8848
Navicula gregaria Donkin 1311.95784 365961.9121
Navicula minima Grunow 3607.88207 144620.6897
Navicula recens Lange-Bertalot 1311.95784 669837.8476
Navicula spp. 655.97496 4920857.677
Navicula tripunctata (Müller) Bory 655.97496 612639.2463
Nitzschia aurariae Cholnoky 3279.89064 126105.806
Nitzschia filiformis var. conferta (Reichardt) Lange-Bertalot 655.97496 261198.9364
Nitzschia inconspicua Grunow 3279.89064 182449.7966
Nitzschia palea var. debilis (Kützing) Grunow 5247.83135 894767.759
Nitzschia palea var. tenuirostris Grunow 655.97496 226511.1346
Nitzschia reversa Smith 2623.91567 1614028.468
Pseudostaurosira brevistriata (Grunow) Williams et Round 1311.95784 186692.2247
Thalassiosira weissflogii (Grunow) Fryxell et Hasle 655.97496 584980.1137
Cyanophyta
Jaaginema pseudogeminatum (Schmidle) Anagnostidis & Komárek 1424295.162 5581962.222
Merismopedia punctata Meyen 379812.0432 4700609.649
Oscillatoria fremyii De Toni 1194825.386 1668882.658
Oscillatoria limnetica Lemmermann 229469.7761 7943412.577
Oscillatoria subbrevis fo. minor Desik. 134516.7653 4904214.471
Phormidium amphibium 300684.5342 6124377.254
Trichormus naviculoides (Fritsch) Komárek & Anagnostidis 229469.7761 8259133.548
PERIPHYTON ALGAE, QUANTITATIVE, RTH (Richest-targeted habitat, cobbles or snags)
[sp., species; Chlorophyta, Green algae; Cyanophyta, Blue-green algae; Chrysophyta, Golden algae, for example diatoms; Cryptophyta, Cryptophytes; Euglenophyta, Euglenoids; Pyrrhophyta, Dinoflagellates; Rhodophyta, Red algae]
Quantitative sample
Phylum
TaxonCells
(number/cm2)		Biovolume
(biovolume/cm2)
Reach A
9/10/1997
Chlorophyta
Spirogyra sp. 0A UL NAWQA EJ 16546.62973 1574425573
Chrysophyta
Actinocyclus normanii (Gregory) Hustedt 1943.48646 7158666.815
Amphora montana Krasske 1943.48646 417915.3105
Amphora pediculus (Kützing) Grunow 6802.20159 640250.542
Aulacoseira ambigua (Grunow) Simonsen 6802.20159 2370880.375
Aulacoseira granulata (Ehrenberg) Simonsen 20406.6089 7411830.863
Aulacoseira sp. 0D UL NAWQA 96 KM 21378.35317 10689176.58
Bacillaria paradoxa Gmelin 13604.40524 15926951.99
Cocconeis pediculus Ehrenberg 1943.48646 6193565.917
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson 10689.17658 1923493.908
Cyclotella atomus Hustedt 103976.5372 8721190.52
Cyclotella meneghiniana Kützing 18463.12244 15954148.84
Cyclotella nana Hustedt 76767.72255 1744050.144
Fragilaria vaucheriae (Kützing) Petersen 1943.48646 1279204.26
Gomphonema parvulum (Kützing) Kützing 1943.48646 422647.958
Gomphosphenia grovei (Schmid) Lange-Bertalot 5830.45939 6256380.33
Gyrosigma acuminatum (Kützing) Rabenhorst 1943.48646 13645197.85
Gyrosigma nodiferum (Grunow) Reimer 971.7422 3240987.993
Melosira varians Agardh 20406.6089 103552317.4
Navicula cincta (Ehrenberg) Ralfs 1943.48646 1217293.981
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot 1943.48646 513489.7174
Navicula exilis Kützing 1943.48646 692210.7376
Navicula germainii Wallace 5830.45939 3848469.608
Navicula gregaria Donkin 1943.48646 542122.6217
Navicula lanceolata (Agardh) Ehrenberg 7773.94585 9790704.157
Navicula minima Grunow 5830.45939 233711.9232
Navicula recens Lange-Bertalot 106891.7679 54575040.22
Navicula rostellata Kützing 1943.48646 1722690.494
Navicula subminuscula Manguin 1943.48646 141525.3782
Nitzschia acicularis (Kützing) Smith 5830.45939 1090651.725
Nitzschia amphibia Grunow 3886.97293 724274.8509
Nitzschia filiformis (Smith) Van Heurck 5830.45939 4640422.349
Nitzschia filiformis var. conferta (Reichardt) Lange-Bertalot 5830.45939 2321597.437
Nitzschia frustulum (Kützing) Grunow 1943.48646 95707.28108
Nitzschia inconspicua Grunow 17491.37817 972989.2677
Nitzschia palea (Kützing) Smith 5830.45939 1765659.758
Nitzschia palea var. debilis (Kützing) Grunow 20406.6089 3479375.479
Nitzschia palea var. tenuirostris Grunow 1943.48646 671094.7052
Nitzschia reversa Smith 1943.48646 1195481.436
Nitzschia thermalis Kützing 31095.78548 5119453.216
Rhoicosphenia abbreviata (Agardh) Lange-Bertalot 1943.48646 990875.8712
Stephanodiscus minutulus (Kützing) Cleve et Möller 27208.81256 8665089.524
Surirella minuta Brébisson 1943.48646 1660963.862
Surirella ovalis Brébisson 1943.48646 37968227.39
Thalassiosira weissflogii (Grunow) Fryxell et Hasle 4858.71512 4332866.175
Cyanophyta
Oscillatoria foreaui Fremy 355752.5392 2408896.695


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