LOCATION.-- Lat 40°27'15", long 89°36'22" (NAD of 1927), in SE1/4SE1/4 sec.12, T.23 N., R.5 W., Tazewell County, Hydrologic Unit 07130004, on right downstream side of bridge on Towerline Road, 2.5 mi east of State Highway 29, 3.9 mi northeast of Green Valley, 5.8 mi south of Pekin, 10.2 mi north of U.S. Highway 136, and at mile 17.3. | |
DRAINAGE AREA.-- 1,073 mi2. Area at site used prior to Oct. 1, 1988, 1,089 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: March 1921 to September 1956; June 1988 to current year. | |
STAGE: Water years 1994 to current year. | |
PARTIAL RECORD: Annual maximum, water years 1957-88. | |
SURFACE-WATER QUALITY | |
CHEMICAL: October 1997 to September 1998. | |
SEDIMENT: October 1994 to September 1997. | |
MISCELLANEOUS: Contaminants of streambed sediment, July 1997; contaminants of fish tissue, July 1997; streambank sediment size, October 1997; Streambed sediment size, October 1997; sediment concentration and particle size, water years 1996-98. | |
BIOLOGICAL | |
ALGAE: Water years 1996-97. | |
BENTHIC MACROINVERTEBRATES: Water year 1996-97. | |
FISH: Water year 1997. | |
HABITAT: Water year 1996, 2003. | |
GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and a crest-stage gage. Datum of gage is 477.10 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers) (476.76 ft NAVD 1988). Prior to Jan. 17, 1933, chain gage at site 3.5 mi downstream on railroad bridge at datum 2.00 ft higher. Jan. 17, 1933, to May 13, 1940, chain gage, and May 14, 1940 to Sept. 30, 1952, wire-weight gage at site 3.6 mi downstream at datum 2.00 ft higher. Oct. 1, 1952 to Oct. 31, 1956, wire-weight gage, and Nov. 1, 1956 to Sept. 30, 1988, crest-stage gage at site 3.6 mi down stream at present datum. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 51,000 ft3/s, Dec. 6, 1982, gage height, 16.13 ft, site then in use; maximum recorded gage height, 28.44 ft, Jan. 16, 2005, discharge, 16,400 ft3/s; minimum discharge observed, 17 ft3/s, Oct. 26, 27, 1940. | |
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 6,160 mg/L, May 27, 1996; minimum daily, 4 mg/L, May 11, 1997. | |
SUSPENDED-SEDIMENT LOADS: Maximum daily 99,800 tons, May 27, 1996; minimum daily, 0.83 tons, Dec. 21, 1996. | |
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 reach begins 2001 feet upstream of the Towerline Road bridge and continues upstream for 1099 feet. |
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 9/9/1996 | |||
Chlorophyta | |||
Cosmarium granulatum West | 8135.14896 | 22989930.96 | |
Gloeocystis vesiculosa Nägeli | 16270.29792 | 4793150.681 | |
Scenedesmus quadricauda (Turpin) Brébisson | 65081.19166 | 2265593.81 | |
Chrysophyta | |||
Amphora pediculus (Kützing) Grunow | 60371.36344 | 5682395.275 | |
Aulacoseira granulata (Ehrenberg) Simonsen | 30185.68172 | 10963662.24 | |
Cocconeis placentula Ehrenberg | 30185.68172 | 22761193.16 | |
Craticula cuspidata (Kützing) Mann | 15092.84086 | 107898349.1 | |
Cyclostephanos dubius (Frick) Round | 150928.4168 | 21598456.99 | |
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson | 332042.5234 | 59750324.64 | |
Cyclotella atomus Hustedt | 664085.0467 | 55701145.39 | |
Cyclotella meneghiniana Kützing | 618806.5241 | 534716238.9 | |
Cyclotella stelligera (Cleve et Grunow) Van Heurck | 407506.7358 | 98771045.21 | |
Cymatopleura solea var. apiculata (Smith) Ralfs | 90557.04517 | 552235715.7 | |
Cymbella affinis Kützing | 45278.52258 | 26828883.89 | |
Gyrosigma scalproides (Rabenhorst) Cleve | 15092.84086 | 22115187.94 | |
Gyrosigma spencerii (Smith) Griffith et Henfrey | 15092.84086 | 59061916.12 | |
Luticola mutica (Kützing) Mann | 15092.84086 | 6473430.463 | |
Lyrella lyra (Ehrenberg) Karajeva | 60371.36344 | 452845597.2 | |
Navicula canalis Patrick | 45278.52258 | 15059252.63 | |
Navicula capitatoradiata Germain | 150928.4168 | 87197742.05 | |
Navicula cincta (Ehrenberg) Ralfs | 618806.5241 | 387586675.6 | |
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 75464.20431 | 19938442.42 | |
Navicula germainii Wallace | 301856.8416 | 199244485.4 | |
Navicula kotschyi Grunow | 15092.84086 | 3320546.814 | |
Navicula minima Grunow | 30185.68172 | 1209982.483 | |
Navicula recens Lange-Bertalot | 241485.4701 | 123293678.2 | |
Navicula reichardtiana Lange-Bertalot | 30185.68172 | 3940277.791 | |
Navicula rostellata Kützing | 196206.9475 | 173916232.3 | |
Navicula subminuscula Manguin | 15092.84086 | 1099066.06 | |
Navicula symmetrica Patrick | 90557.04517 | 103687482.6 | |
Navicula trivialis Lange-Bertalot | 45278.52258 | 49371841.84 | |
Nitzschia acicularis (Kützing) Smith | 301856.8416 | 56465650.97 | |
Nitzschia angustatula Lange-Bertalot | 30185.68172 | 11160633.08 | |
Nitzschia capitellata Hustedt | 30185.68172 | 11931240 | |
Nitzschia gracilis Hantzsch ex Rabenhorst | 60371.36344 | 24076260.53 | |
Nitzschia inconspicua Grunow | 437692.4175 | 15144118.95 | |
Nitzschia intermedia Hantzsch ex Cleve et Grunow | 30185.68172 | 27727151.32 | |
Nitzschia palea (Kützing) Smith | 1086684.631 | 329084759.1 | |
Nitzschia palea var. debilis (Kützing) Grunow | 1584748.421 | 270203384.7 | |
Nitzschia palea var. tenuirostris Grunow | 30185.68172 | 10423253.03 | |
Nitzschia perminuta (Grunow) Peragallo | 90557.04517 | 9299429.575 | |
Nitzschia solita Hustedt | 135835.5759 | 36236549.24 | |
Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 60371.36344 | 30780007.2 | |
Sellaphora pupula (Kützing) Meresckowsky | 120742.735 | 76151020.76 | |
Sellaphora pupula var. capitata Skvortzvow et Mayer | 30185.68172 | 66220253.63 | |
Surirella minuta Brébisson | 30185.68172 | 22127306.13 | |
Surirella splendida (Ehrenberg) Kützing | 15092.84086 | 379814337 | |
Thalassiosira pseudonana Hasle et Heimdal | 256578.3109 | 11173212.66 | |
Thalassiosira weissflogii (Grunow) Fryxell et Hasle | 45278.52258 | 40378119.3 | |
Tryblionella apiculata Gregory | 120742.735 | 294693919.1 | |
Tryblionella calida (Grunow) Mann | 105649.8942 | 232824957.9 | |
Tryblionella hungarica (Grunow) Mann | 120742.735 | 106743638.6 | |
Tryblionella victoriae Grunow | 45278.52258 | 39172344.95 | |
Cryptophyta | |||
Cryptomonas sp. 0A UL NAWQA 1996 TS | 8135.14896 | 81351.48958 | |
Cyanophyta | |||
Merismopedia tenuissima Lemmermann | 211513.8729 | 250317.8012 | |
Oscillatoria limnetica Lemmermann | 130162.3833 | 4505750.302 | |
Phormidium formosum | 203378.724 | 7512853.324 | |
Phormidium tenue (Agardh ex Gomont) Anagnostidis & Komárek | 81351.48958 | 13970514.05 | |
Euglenophyta | |||
Strombomonas verrucosa (Daday) Deflandre | 16270.29792 | 24405446.87 | |
Trachelomonas granulosa Playfair | 81351.48958 | 246077409.1 | |
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 9/9/1996 | |||
Chlorophyta | |||
Ankistrodesmus falcatus (Corda) Ralfs | 2252.12992 | 97604.05168 | |
Cosmarium granulatum West | 750.70997 | 2121506.384 | |
Gloeocystis vesiculosa Nägeli | 3753.54986 | 1105777.545 | |
Protococcus viridis var. 0A UL NAWQA 1996 TS | 3002.83989 | 1299412.412 | |
Scenedesmus bijuga (Turpin) Lagerheim | 1501.41995 | 60546.62101 | |
Scenedesmus quadricauda (Turpin) Brébisson | 7507.09973 | 261335.6984 | |
Chrysophyta | |||
Achnanthidium minutissimum (Kützing) Czarnecki | 35433.51072 | 1926612.725 | |
Amphora inariensis Krammer | 2530.96462 | 366945.1007 | |
Amphora pediculus (Kützing) Grunow | 12654.82462 | 1191122.935 | |
Cocconeis pediculus Ehrenberg | 2530.96462 | 8065760.436 | |
Cocconeis placentula var. lineata (Ehrenberg) Van Heurck | 8858.37768 | 9679864.975 | |
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson | 32902.54535 | 5920740.953 | |
Cyclotella atomus Hustedt | 36698.99304 | 3078183.972 | |
Cyclotella meneghiniana Kützing | 36698.99304 | 31711927.34 | |
Cyclotella nana Hustedt | 10123.85999 | 229999.2612 | |
Cyclotella sp. 0B UL NAWQA 96 KM | 7592.89462 | 3796447.31 | |
Cyclotella stelligera (Cleve et Grunow) Van Heurck | 46822.85303 | 11348872.86 | |
Cymatopleura solea var. apiculata (Smith) Ralfs | 1265.48231 | 7717174.612 | |
Cymbella obscura Krasske | 2530.96462 | 2325323.747 | |
Geissleria decussis (Hustedt) Lange-Bertalot et Metzeltin | 2530.96462 | 668521.7061 | |
Gomphonema minutum (Agardh) Agardh | 75928.95145 | 25294387.91 | |
Gomphonema olivaceum (Lyngbye) Kützing | 1265.48231 | 494374.6924 | |
Gomphonema parvulum (Kützing) Kützing | 22778.68536 | 4953656.757 | |
Gomphonema sp. 0E UL NAWQA 96 KM | 21513.2023 | 28010189.39 | |
Melosira varians Agardh | 5061.93 | 25686510.89 | |
Navicula arvensis Hustedt | 2530.96462 | 188279.1305 | |
Navicula capitatoradiata Germain | 11389.3423 | 6580105.681 | |
Navicula cincta (Ehrenberg) Ralfs | 10123.85999 | 6341034.048 | |
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 110096.9791 | 29088788.5 | |
Navicula germainii Wallace | 3796.44693 | 2505893.561 | |
Navicula menisculus Schumann | 7592.89462 | 2659824.152 | |
Navicula minima Grunow | 2530.96462 | 101452.8307 | |
Navicula recens Lange-Bertalot | 58212.19608 | 29721025.34 | |
Navicula reichardtiana Lange-Bertalot | 2530.96462 | 330378.6141 | |
Navicula rostellata Kützing | 1265.48231 | 1121713.163 | |
Navicula symmetrica Patrick | 2530.96462 | 2897945.155 | |
Navicula tripunctata (Müller) Bory | 1265.48231 | 1181880.672 | |
Nitzschia acicularis (Kützing) Smith | 5061.93 | 946889.8265 | |
Nitzschia amphibia Grunow | 12654.82462 | 2358022.91 | |
Nitzschia capitellata Hustedt | 2530.96462 | 1000393.054 | |
Nitzschia frustulum (Kützing) Grunow | 7592.89462 | 373913.2292 | |
Nitzschia inconspicua Grunow | 70867.02145 | 2451992.677 | |
Nitzschia intermedia Hantzsch ex Cleve et Grunow | 2530.96462 | 2324825.383 | |
Nitzschia linearis (Agardh ex Smith) Smith | 2530.96462 | 7530728.913 | |
Nitzschia palea (Kützing) Smith | 29106.09767 | 8814308.089 | |
Nitzschia palea var. debilis (Kützing) Grunow | 30371.57998 | 5178426.81 | |
Nitzschia sociabilis Hustedt | 21513.2023 | 4922826.221 | |
Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 29106.09767 | 14839583.62 | |
Tryblionella hungarica (Grunow) Mann | 2530.96462 | 2237520.732 | |
Tryblionella levidensis Smith | 1265.48231 | 14823859.8 | |
Cyanophyta | |||
Chroococcus dispersus (Keissler) Lemmermann | 28526.97897 | 4922675.161 | |
Cyanosarcina spectabilis (Geitler) Kovácik | 3002.83989 | 289644.0513 | |
Merismopedia tenuissima Lemmermann | 6005.67978 | 7107.47025 | |
Microcystis aeruginosa Kützing | 60056.79784 | 59232.71882 | |
Oscillatoria limnetica Lemmermann | 36784.78868 | 1273356.16 | |
Phormidium aerugineo-caeruleum | 27025.55903 | 1354321.348 | |
Phormidium formosum | 5254.96981 | 194119.7026 | |
Planktolyngbya subtilis (Lemmermann) Anagnostidis & Komárek | 20269.16927 | 1332527.126 | |
Rhabdogloea smithii (Chodat) Komárek | 750.70997 | 7485.02156 | |
Unknown Cyanophyte curved filam. UL NAWQA 96 TS | 3002.83989 | 2166629.055 | |
Euglenophyta | |||
Euglena polymorpha Dangeard | 1501.41995 | 10147926.21 | |
Trachelomonas volvocina Ehrenberg | 1501.41995 | 2206809.895 | |
Rhodophyta | |||
Unknown Rhodophyte UL NAWQA 1996 TS (filament) | 7507.09973 | 6155269.427 | |
Unknown Rhodophyte UL NAWQA 1996 TS (resting spore, filament) NAWQA 96 TS | 1501.41995 | 600567.9784 | |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |