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 quantitative sample was collected in accordance with NAWQA protocols (Cuffney and others, 1993). The reach begins 1326 ft downstream of the State Highway 61 bridge (gage), and continues downstream 1283 ft. |
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 9/4/1997 | |||
Chlorophyta | |||
Chlorella vulgaris Beyerinck | 7380.36402 | 1464228.911 | |
Unknown Chlorophyte colonial coccoid medium sp. 0B NAWQA EDJ | 29521.45609 | 3337105.397 | |
Chrysophyta | |||
Achnanthidium minutissimum (Kützing) Czarnecki | 671.96 | 36536.22422 | |
Amphora montana Krasske | 895.94667 | 192658.8315 | |
Cocconeis placentula var. euglypta (Ehrenberg) Cleve | 671.96 | 463682.9055 | |
Craticula citrus (Krasske) Reichardt | 447.97334 | 147426.8311 | |
Craticula halophila (Grunow) Mann | 223.98667 | 125440.584 | |
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson | 5151.69336 | 927035.9334 | |
Cyclotella atomus Hustedt | 4367.73633 | 366350.5414 | |
Cyclotella meneghiniana Kützing | 4367.73633 | 3774199.935 | |
Cyclotella nana Hustedt | 1119.93334 | 25443.24405 | |
Cyclotella pseudostelligera Hustedt | 1343.92001 | 116133.8589 | |
Cylindrotheca gracilis (Brébisson) Grunow | 895.94667 | 375202.7746 | |
Fallacia monoculata (Hustedt) Mann | 895.94667 | 245379.367 | |
Fallacia tenera (Hustedt) Mann | 1007.93631 | 156717.2974 | |
Geissleria decussis (Hustedt) Lange-Bertalot et Metzeltin | 223.98667 | 59163.19332 | |
Gomphonema minutum (Agardh) Agardh | 447.97334 | 149234.3975 | |
Gomphonema olivaceum (Lyngbye) Kützing | 671.96 | 262508.6237 | |
Gomphonema pumilum (Grunow) Reichardt et Lange-Bertalot | 223.98667 | 49430.51742 | |
Gyrosigma scalproides (Rabenhorst) Cleve | 1119.93334 | 1641012.219 | |
Hantzschia amphioxys (Ehrenberg) Grunow | 1231.92298 | 1299097.934 | |
Luticola mutica (Kützing) Mann | 223.98667 | 129919.0707 | |
Melosira varians Agardh | 335.97631 | 1704895.008 | |
Navicula canalis Patrick | 447.97334 | 148992.1323 | |
Navicula capitatoradiata Germain | 223.98667 | 129406.5895 | |
Navicula cincta (Ehrenberg) Ralfs | 447.97334 | 280586.0783 | |
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 1343.92001 | 355077.9062 | |
Navicula erifuga Lange-Bertalot | 895.94667 | 392647.5104 | |
Navicula exilis Kützing | 1343.92001 | 478663.4105 | |
Navicula germainii Wallace | 3471.78966 | 2291599.357 | |
Navicula gregaria Donkin | 5487.66967 | 1530748.952 | |
Navicula meniscus Schumann | 223.98667 | 374602.4553 | |
Navicula minima Grunow | 2463.85335 | 98762.69864 | |
Navicula reichardtiana Lange-Bertalot | 783.94965 | 102332.603 | |
Navicula rostellata Kützing | 671.96 | 595619.8469 | |
Navicula sp. 0Z UL NAWQA KM | 223.98667 | 65649.89551 | |
Navicula subminuscula Manguin | 1119.93334 | 81553.94558 | |
Navicula tenelloides Hustedt | 447.97334 | 74095.68848 | |
Nitzschia acicularis (Kützing) Smith | 223.98667 | 41899.17622 | |
Nitzschia amphibia Grunow | 1791.89334 | 333890.4869 | |
Nitzschia aurariae Cholnoky | 223.98667 | 8611.87838 | |
Nitzschia capitellata Hustedt | 1567.90667 | 619733.2561 | |
Nitzschia dissipata (Kützing) Grunow | 1007.93631 | 256242.8821 | |
Nitzschia frustulum (Kützing) Grunow | 111.98964 | 5514.94672 | |
Nitzschia palea (Kützing) Smith | 3583.78668 | 1085291.485 | |
Nitzschia palea var. debilis (Kützing) Grunow | 5599.66669 | 954756.5241 | |
Nitzschia palea var. tenuirostris Grunow | 671.96 | 232030.8418 | |
Nitzschia perminuta (Grunow) Peragallo | 1903.88299 | 195512.4056 | |
Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot | 2239.86668 | 634108.5091 | |
Reimeria sinuata (Gregory) Kociolek et Stoermer | 111.98964 | 18511.13263 | |
Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 223.98667 | 114198.3691 | |
Sellaphora pupula (Kützing) Meresckowsky | 671.96 | 377785.1319 | |
Simonsenia delognei (Grunow) Lange-Bertalot | 1679.89632 | 94235.39938 | |
Stauroneis gracillima Hustedt | 223.98667 | 195046.7945 | |
Stephanodiscus minutulus (Kützing) Cleve et Möller | 1791.89334 | 570657.6202 | |
Surirella angusta Kützing | 447.97334 | 491289.3531 | |
Surirella minuta Brébisson | 2463.85335 | 2078450.735 | |
Surirella spp. | 223.98667 | 2055136.461 | |
Thalassiosira weissflogii (Grunow) Fryxell et Hasle | 895.94667 | 798980.1677 | |
Cyanophyta | |||
Jaaginema pseudogeminatum (Schmidle) Anagnostidis & Komárek | 191889.4646 | 752034.9509 | |
Jaaginema subtilissima (Kützing) Anagnostidis & Komárek | 265693.1048 | 6642327.621 | |
Lyngbya spiralis Geitler | 125466.1884 | 6155684.868 | |
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 8/5/1997 | |||
Chlorophyta | |||
Chlorella ellipsoidea Gerneck | 5684.83672 | 550255.6893 | |
Chlorella vulgaris Beyerinck | 5684.83672 | 1127844.407 | |
Gloeocystis vesiculosa Nägeli | 5684.83672 | 1674725.266 | |
Chrysophyta | |||
Amphora montana Krasske | 1967.82329 | 423148.5503 | |
Amphora pediculus (Kützing) Grunow | 1967.82329 | 185219.4336 | |
Caloneis bacillum (Grunow) Cleve | 1967.82329 | 845746.4053 | |
Cocconeis placentula var. euglypta (Ehrenberg) Cleve | 3935.65226 | 2715778.715 | |
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson | 21646.10731 | 3895169.589 | |
Cyclotella atomus Hustedt | 61986.58417 | 5199219.217 | |
Cyclotella meneghiniana Kützing | 19678.27834 | 17004175.9 | |
Cyclotella planctonica Brunnthaler | 3935.65226 | 1285492.105 | |
Cymatopleura solea var. apiculata (Smith) Ralfs | 1967.82329 | 12000196.11 | |
Diadesmis confervacea Kützing | 69857.89437 | 35313738.25 | |
Fallacia pygmaea (Kützing) Stickle et Mann | 1967.82329 | 2143354.575 | |
Gomphonema angustatum (Kützing) Rabenhorst | 1967.82329 | 617635.9688 | |
Gomphonema angustum Agardh | 1967.82329 | 1664362.782 | |
Gomphonema minutum (Agardh) Agardh | 56083.09725 | 18683092.42 | |
Gomphonema parvulum (Kützing) Kützing | 23613.93628 | 5135297.898 | |
Gyrosigma acuminatum (Kützing) Rabenhorst | 13774.79143 | 96712664.52 | |
Gyrosigma scalproides (Rabenhorst) Cleve | 21646.10731 | 31717536.54 | |
Luticola goeppertiana (Bleisch) Mann | 983.9088 | 769919.6437 | |
Melosira lineata Agardh | 7871.3102 | 8044746.728 | |
Melosira varians Agardh | 41324.38565 | 209698530.6 | |
Navicula canalis Patrick | 1967.82329 | 654481.3368 | |
Navicula cryptocephala Kützing | 1967.82329 | 665922.716 | |
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 1967.82329 | 519919.7638 | |
Navicula erifuga Lange-Bertalot | 24597.85077 | 10779977.4 | |
Navicula exilis Kützing | 5903.48123 | 2102640.369 | |
Navicula germainii Wallace | 34436.98994 | 22730577.53 | |
Navicula gregaria Donkin | 3935.65226 | 1097824.019 | |
Navicula meniscus Schumann | 1967.82329 | 3291050.499 | |
Navicula minima Grunow | 30501.332 | 1222635.213 | |
Navicula subminuscula Manguin | 27549.58854 | 2006170.874 | |
Navicula symmetrica Patrick | 9839.13917 | 11265778.05 | |
Navicula tenelloides Hustedt | 1967.82329 | 325481.9197 | |
Nitzschia amphibia Grunow | 7871.3102 | 1466691.981 | |
Nitzschia dissipata (Kützing) Grunow | 1967.82329 | 500270.407 | |
Nitzschia frustulum (Kützing) Grunow | 8855.22469 | 436076.8618 | |
Nitzschia linearis (Agardh ex Smith) Smith | 5903.48123 | 17565443.78 | |
Nitzschia palea (Kützing) Smith | 29517.41751 | 8938869.612 | |
Nitzschia palea var. debilis (Kützing) Grunow | 42308.30014 | 7213666.062 | |
Psammothidium marginulatum (Grunow) Bukhtiyarova et Round | 983.9088 | 209968.969 | |
Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 49195.70154 | 25082157.52 | |
Sellaphora pupula (Kützing) Meresckowsky | 1967.82329 | 1106337.247 | |
Simonsenia delognei (Grunow) Lange-Bertalot | 1967.82329 | 110386.9396 | |
Surirella angusta Kützing | 1967.82329 | 2158098.603 | |
Surirella minuta Brébisson | 5903.47555 | 4566752.614 | |
Cyanophyta | |||
Anabaena iyengarii var. tenuis Rao | 79587.71413 | 5081410.255 | |
Jaaginema pseudogeminatum (Schmidle) Anagnostidis & Komárek | 147805.7548 | 579266.2656 | |
Jaaginema subtilissima (Kützing) Anagnostidis & Komárek | 17054.51017 | 426362.7543 | |
Jaaginema unigranulatum (Biswas) Anagnostidis | 312666.0198 | 2285809.034 | |
Leptolyngbya tenuis (Gomont) Anagnostidis & Komárek | 204654.122 | 2063047.973 | |
Oscillatoria angustissima West & West | 85272.55085 | 10068647.11 | |
Oscillatoria fremyii De Toni | 227393.4689 | 317613.788 | |
Planktolyngbya subtilis (Lemmermann) Anagnostidis & Komárek | 329720.53 | 21676347.18 | |
Reach A 9/4/1997 | |||
Chlorophyta | |||
Actinastrum hantzschii var. elongatum GM Smith | 898.96995 | 16445.15702 | |
Chrysophyta | |||
Achnanthidium minutissimum (Kützing) Czarnecki | 74.94918 | 4075.18309 | |
Amphora montana Krasske | 112.42377 | 24174.91221 | |
Amphora pediculus (Kützing) Grunow | 374.74616 | 35272.61379 | |
Aulacoseira alpigena (Grunow) Krammer | 262.32226 | 14818.12594 | |
Craticula citrus (Krasske) Reichardt | 224.84767 | 73996.76842 | |
Cyclostephanos invisitatus (Hohn et Hellerman) Theriot, Stoermer et Hĺkansson | 224.84767 | 40460.84525 | |
Cyclotella atomus Hustedt | 1611.40878 | 135159.3672 | |
Cyclotella meneghiniana Kützing | 374.74616 | 323821.4972 | |
Cyclotella nana Hustedt | 299.79698 | 6810.94791 | |
Cymbella affinis Kützing | 149.89849 | 88819.35414 | |
Fallacia omissa (Hustedt) Mann | 74.94918 | 14130.9046 | |
Fallacia tenera (Hustedt) Mann | 74.94918 | 11653.34827 | |
Gomphonema minutum (Agardh) Agardh | 1986.15506 | 661652.4485 | |
Gomphonema parvulum (Kützing) Kützing | 599.59395 | 130393.0665 | |
Gyrosigma acuminatum (Kützing) Rabenhorst | 112.42377 | 789326.0951 | |
Gyrosigma scalproides (Rabenhorst) Cleve | 224.84767 | 329464.0473 | |
Luticola mutica (Kützing) Mann | 112.42377 | 65209.20125 | |
Mayamaea atomus (Kützing) Lange-Bertalot | 2285.95217 | 64108.18249 | |
Navicula arvensis Hustedt | 224.84767 | 16726.47774 | |
Navicula canalis Patrick | 112.42377 | 37391.19241 | |
Navicula cincta (Ehrenberg) Ralfs | 224.84767 | 140832.3228 | |
Navicula cryptocephala Kützing | 149.89849 | 50726.51037 | |
Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 1049.28942 | 277233.3825 | |
Navicula erifuga Lange-Bertalot | 1349.08652 | 591235.4843 | |
Navicula exilis Kützing | 299.79698 | 106778.56 | |
Navicula germainii Wallace | 936.86552 | 618390.1188 | |
Navicula gregaria Donkin | 524.64464 | 146346.1338 | |
Navicula minima Grunow | 974.34024 | 39056.08724 | |
Navicula subminuscula Manguin | 1124.23873 | 81867.46535 | |
Navicula symmetrica Patrick | 449.69546 | 514899.6476 | |
Navicula tenelloides Hustedt | 374.74616 | 61983.76609 | |
Navicula trivialis Lange-Bertalot | 374.74616 | 408624.374 | |
Nitzschia acicularis (Kützing) Smith | 149.89849 | 28040.16521 | |
Nitzschia amphibia Grunow | 449.69546 | 83793.51271 | |
Nitzschia angustatula Lange-Bertalot | 74.94918 | 27711.16132 | |
Nitzschia dissipata (Kützing) Grunow | 187.37308 | 47634.97142 | |
Nitzschia frustulum (Kützing) Grunow | 299.79698 | 14763.54686 | |
Nitzschia gracilis Hantzsch ex Rabenhorst | 74.94918 | 29889.93253 | |
Nitzschia inconspicua Grunow | 299.79698 | 16676.74425 | |
Nitzschia palea (Kützing) Smith | 449.69546 | 136182.9543 | |
Nitzschia palea var. debilis (Kützing) Grunow | 1424.0357 | 242801.4828 | |
Nitzschia palea var. tenuirostris Grunow | 74.94918 | 25880.2923 | |
Pinnularia gibba Ehrenberg | 74.94918 | 115996.8855 | |
Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot | 224.84767 | 63654.60094 | |
Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 149.89849 | 76424.91871 | |
Sellaphora mutata (Krasske) Lange-Bertalot | 74.94918 | 17237.19158 | |
Sellaphora pupula (Kützing) Meresckowsky | 149.89849 | 84274.98635 | |
Sellaphora pupula var. capitata Skvortzvow et Mayer | 262.32226 | 102521.5722 | |
Simonsenia delognei (Grunow) Lange-Bertalot | 299.79698 | 16817.39967 | |
Stephanodiscus minutulus (Kützing) Cleve et Möller | 149.89849 | 47737.61501 | |
Surirella angusta Kützing | 74.94918 | 82196.26296 | |
Surirella minuta Brébisson | 224.84767 | 192161.7968 | |
Thalassiosira weissflogii (Grunow) Fryxell et Hasle | 262.32226 | 233931.6484 | |
Tryblionella calida (Grunow) Mann | 74.94918 | 165168.5482 | |
Cyanophyta | |||
Phormidium ambiguum Gomont | 5008.54689 | 76446.55953 | |
Phormidium minnesotense (Tilden) Drouet | 14383.51926 | 168465.0732 | |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |