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 lower Illinois River Basin. A quantitative sample was collected in accordance with NAWQA protocols (Cuffney and others, 1993). 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, 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 | |||
| Taxon | Cells (number/cm2) | Biovolume (biovolume/cm2) | |
| Reach A 9/8/1998 | |||
| Chrysophyta | |||
| Actinocyclus normanii (Gregory) Hustedt | 211.79587 | 780132.0443 | |
| Amphora montana Krasske | 3706.42763 | 797007.2918 | |
| Amphora pediculus (Kützing) Grunow | 317.6938 | 31085.45832 | |
| Amphora veneta Kützing | 105.89793 | 61505.28371 | |
| Aulacoseira ambigua (Grunow) Simonsen | 529.48966 | 184551.5189 | |
| Aulacoseira granulata (Ehrenberg) Simonsen | 317.6938 | 115388.7327 | |
| Aulacoseira granulata fo. valida (Hustedt) Simonsen | 847.18346 | 355577.1139 | |
| Capartogramma crucicula (Grunow ex Cleve) Ross | 105.89793 | 169890.6163 | |
| Cyclostephanos dubius (Frick) Round | 105.89793 | 27009.05313 | |
| Cyclotella meneghiniana Kützing | 1058.97932 | 914346.3495 | |
| Cymbella tumida (Brébisson ex Kützing) Van Heurck | 105.89793 | 293201.3768 | |
| Gyrosigma scalproides (Rabenhorst) Cleve | 1853.21382 | 2715471.012 | |
| Gyrosigma sciotoense (Sullivan et Wormley) Cleve | 105.89793 | 943126.9646 | |
| Hantzschia distinctepunctata Hustedt | 423.59173 | 4961953.525 | |
| Hippodonta capitata (Ehrenberg) Lange-Bertalot, Metzeltin et Witkowski | 423.59173 | 252314.2142 | |
| Karayevia clevei (Grunow) Kingston | 105.89793 | 18030.65916 | |
| Navicula cincta (Ehrenberg) Ralfs | 5559.64145 | 3482256.348 | |
| Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 211.79587 | 55958.71389 | |
| Navicula erifuga Lange-Bertalot | 105.89793 | 54111.1376 | |
| Navicula germainii Wallace | 370.64276 | 168329.0218 | |
| Navicula menisculus Schumann | 105.89793 | 37096.50765 | |
| Navicula perminuta Grunow | 105.89793 | 7420.1377 | |
| Navicula phyllepta Kützing | 211.79587 | 62267.98578 | |
| Navicula reichardtiana Lange-Bertalot | 105.89793 | 13823.35029 | |
| Navicula rostellata Kützing | 317.6938 | 281601.1856 | |
| Navicula symmetrica Patrick | 317.6938 | 156440.4648 | |
| Nitzschia microcephala Grunow | 105.89793 | 11499.0358 | |
| Nitzschia palea (Kützing) Smith | 264.74483 | 79101.38956 | |
| Opephora martyi Héribaud | 211.79587 | 146063.5879 | |
| Planothidium delicatulum (Kützing) Round et Bukhtiyarova | 317.6938 | 66260.30935 | |
| Pleurosira laevis (Ehrenberg) Compčre | 211.79587 | 23160287.03 | |
| Pseudostaurosira brevistriata (Grunow) Williams et Round | 317.6938 | 45207.98023 | |
| Reimeria sinuata (Gregory) Kociolek et Stoermer | 105.89793 | 17504.21302 | |
| Staurosira construens (Ehrenberg) Williams et Round | 635.38759 | 179889.8226 | |
| Staurosira construens var. venter (Ehrenberg) Hamilton | 317.6938 | 29432.01141 | |
| Staurosirella lapponica (Grunow) Williams et Round | 211.79587 | 141584.0353 | |
| Staurosirella pinnata (Ehrenberg) Williams et Round | 317.6938 | 30639.98807 | |
| Synedra ulna (Nitzsch) Ehrenberg | 211.79587 | 1256048.378 | |
| Tabellaria fenestrata (Lyngbye) Kützing | 211.79587 | 462809.7271 | |
| Cyanophyta | |||
| Anabaena sp. 1 MSU NAWQA KMM 1998 | 2172.26528 | 87724.19628 | |
| Leptolyngbya fragilis (Gomont) Anagnostidis & Komárek | 3801.46424 | 7855.64982 | |
| 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 | |||
| Taxon | Cells (number/cm2) | Biovolume (biovolume/cm2) | |
| Reach A 9/8/1998 | |||
| Chlorophyta | |||
| Cosmarium sp. | 797.07566 | 10838900.88 | |
| Pediastrum simplex (Meyen) Lemmermann | 2789.76481 | 940071.3164 | |
| Pediastrum tetras (Ehrenberg) Ralfs | 398.53783 | 23939.94427 | |
| Scenedesmus acutus Meyen | 1594.15132 | 52736.16764 | |
| Scenedesmus sp. 1? | 1594.15132 | 135502.8622 | |
| Scenedesmus sp. 2? | 1594.15132 | 135502.8622 | |
| Scenedesmus spinosus Chodat | 4782.45396 | 78876.39144 | |
| Chrysophyta | |||
| Achnanthidium pyrenaicum (Hustedt) Kobayasi | 2272.26025 | 309445.1718 | |
| Amphora coffeaeformis (Agardh) Kützing | 8710.33162 | 1327091.057 | |
| Amphora pediculus (Kützing) Grunow | 2650.97042 | 259390.1124 | |
| Aulacoseira ambigua (Grunow) Simonsen | 3029.6806 | 1055983.145 | |
| Aulacoseira granulata (Ehrenberg) Simonsen | 1514.8403 | 550201.1765 | |
| Bacillaria paradoxa Gmelin | 1136.13013 | 1330090.493 | |
| Cyclotella atomus Hustedt | 34841.32688 | 2922369.251 | |
| Cyclotella meneghiniana Kützing | 22722.60449 | 19619203.2 | |
| Gomphonema kobayasii Kociolek et Kingston | 757.41995 | 126264.8445 | |
| Gomphonema parvulum (Kützing) Kützing | 1514.8403 | 386486.6895 | |
| Gomphosphenia lingulatiformis (Lange-Bertalot et Reichardt) Lange-Bertalot | 2272.26025 | 1414796.055 | |
| Gyrosigma nodiferum (Grunow) Reimer | 3029.6806 | 10104694.93 | |
| Luticola goeppertiana (Bleisch) Mann | 3787.10055 | 2963448.558 | |
| Luticola ventricosa (Kützing) Mann | 757.41995 | 380087.3205 | |
| Navicula cincta (Ehrenberg) Ralfs | 757.41995 | 474406.5697 | |
| Navicula exilis Kützing | 3787.10055 | 1348849.974 | |
| Navicula germainii Wallace | 757.41995 | 343985.5651 | |
| Navicula minima Grunow | 37492.2973 | 1504116.358 | |
| Navicula recens Lange-Bertalot | 13633.56269 | 6910236.145 | |
| Navicula rostellata Kützing | 3029.6806 | 2685484.101 | |
| Navicula subminuscula Manguin | 2272.26025 | 163480.4904 | |
| Navicula tenelloides Hustedt | 5301.94085 | 876951.6735 | |
| Nitzschia agnita Hustedt | 5301.94085 | 532068.6392 | |
| Nitzschia amphibia Grunow | 1514.8403 | 281381.8736 | |
| Nitzschia brevissima Grunow ex Van Heurck | 757.41995 | 317283.2171 | |
| Nitzschia filiformis (Smith) Van Heurck | 1514.8403 | 1205650.927 | |
| Nitzschia filiformis var. conferta (Reichardt) Lange-Bertalot | 5301.94085 | 2111149.659 | |
| Nitzschia frustulum (Kützing) Grunow | 12876.14234 | 631748.8672 | |
| Nitzschia heufleriana Grunow | 757.41995 | 8349760.006 | |
| Nitzschia inconspicua Grunow | 2272.26025 | 78487.41376 | |
| Nitzschia intermedia Hantzsch ex Cleve et Grunow | 757.41995 | 695730.4355 | |
| Nitzschia palea (Kützing) Smith | 3029.6806 | 905218.6039 | |
| Nitzschia palea var. debilis (Kützing) Grunow | 7574.2015 | 1290279.844 | |
| Nitzschia perminuta (Grunow) Peragallo | 3029.6806 | 311122.1424 | |
| Nitzschia pumila Hustedt | 757.41995 | 105813.9377 | |
| Nitzschia sp. 1? | 757.41995 | 1171313.036 | |
| Nitzschia subacicularis Hustedt | 3029.6806 | 946775.1875 | |
| Planothidium rostratum (Řstrup) Lange-Bertalot | 757.41995 | 57685.61086 | |
| Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 1514.8403 | 772332.9802 | |
| Staurosira construens (Ehrenberg) Williams et Round | 757.41995 | 214439.4108 | |
| Synedra ulna (Nitzsch) Ehrenberg | 6059.3612 | 35934840.49 | |
| Synedra ulna vars. (Nitzsch) Ehrenberg | 757.41995 | 6529717.389 | |
| Tabularia tabulata (Agardh) Snoeijs | 4544.5209 | 8286033.137 | |
| Thalassiosira pseudonana Hasle et Heimdal | 7952.91127 | 346325.3476 | |
| Tryblionella victoriae Grunow | 757.41995 | 655275.6968 | |
| Cyanophyta | |||
| Aphanothece sp. | 95649.0792 | 2391226.98 | |
| Phormidium formosum | 87279.78477 | 3224133.578 | |
| Phormidium granulatum | 195682.0745 | 7096817.452 | |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |