LOCATION.-- Lat 40°49'42", long 88°34'29" (NAD of 1927), in SW1/4 sec.6, T.27 N., R.6 E., Livingston County, Hydrologic Unit 07130002, at county road bridge, 0.3 mi. east of McDowell, 0.4 mi. downstream from Turtle Creek, 7.3 mi downstream from confluence of North and South Branches, and at mile 68.4. | |
DRAINAGE AREA.-- 551 mi2 | |
PERIOD OF RECORD.-- | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1978-91. | |
BIOLOGICAL | |
ALGAE: Water year 1997. | |
BENTHIC MACROINVERTEBRATES: Water year 1997. | |
REMARKS.--Water-discharge records from the Vermilion River at Pontiac (Station 05554500) were used to estimate mean daily discharges for this station. Station established as a low-flow water-quality samping site in August 1997 as part of the National Water-Quality Assessment (NAWQA), Lower Illinos River Basin synoptic study. | |
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 33 meters downstream from the 1400 N bridge and continues downstream for 176 meters. | |
| 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 8/11/1997 | |||
| Chlorophyta | |||
| Cosmarium granulatum West | 605.34632 | 1710708.705 | |
| Cosmarium minor | 605.34632 | 1425590.587 | |
| Oedogonium sp. 0A UL NAWQA KM | 3632.07793 | 9169398.656 | |
| Scenedesmus spinosus Chodat | 2421.38529 | 39935.59002 | |
| Tetrastrum glabrum (Roll) Ahlstrom & Tiffany | 1210.69264 | 28098.41365 | |
| Chrysophyta | |||
| Achnanthidium minutissimum (Kützing) Czarnecki | 271.13462 | 14742.29884 | |
| Amphora copulata (Kützing) Schoeman et Archibald | 90.37821 | 151161.2938 | |
| Amphora montana Krasske | 361.51313 | 77737.54696 | |
| Amphora pediculus (Kützing) Grunow | 180.75641 | 17013.51966 | |
| Aulacoseira granulata (Ehrenberg) Simonsen | 271.13462 | 98478.0928 | |
| Caloneis bacillum (Grunow) Cleve | 180.75641 | 77686.89719 | |
| Cocconeis placentula var. lineata (Ehrenberg) Van Heurck | 180.75641 | 197518.9725 | |
| Craticula molestiformis (Hustedt) Lange-Bertalot | 90.37821 | 10562.89796 | |
| Cyclotella atomus Hustedt | 1265.29609 | 106128.6381 | |
| Cyclotella meneghiniana Kützing | 2395.02488 | 2069562.365 | |
| Cyclotella nana Hustedt | 406.70223 | 9239.67856 | |
| Cymbella affinis Kützing | 180.75641 | 107103.6002 | |
| Gomphonema minutum (Agardh) Agardh | 271.13462 | 90323.7047 | |
| Gomphonema parvulum (Kützing) Kützing | 2169.07906 | 471707.3423 | |
| Gomphonema spp. | 90.37821 | 117672.424 | |
| Mayamaea atomus (Kützing) Lange-Bertalot | 180.75641 | 5069.20713 | |
| Melosira varians Agardh | 180.75641 | 917239.3808 | |
| Navicula arvensis Hustedt | 225.94551 | 16808.14683 | |
| Navicula canalis Patrick | 225.94551 | 75147.56198 | |
| Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 361.51313 | 95515.59854 | |
| Navicula erifuga Lange-Bertalot | 2259.45726 | 990204.3259 | |
| Navicula exilis Kützing | 632.64805 | 225329.9823 | |
| Navicula gregaria Donkin | 90.37821 | 25210.39935 | |
| Navicula minima Grunow | 2214.26816 | 88758.16392 | |
| Navicula reichardtiana Lange-Bertalot | 90.37821 | 11797.48864 | |
| Navicula subminuscula Manguin | 587.45894 | 42778.96997 | |
| Navicula symmetrica Patrick | 451.89133 | 517413.9076 | |
| Navicula tenelloides Hustedt | 316.32402 | 52320.62806 | |
| Navicula trivialis Lange-Bertalot | 45.1891 | 49274.33833 | |
| Nitzschia amphibia Grunow | 225.94551 | 42101.31043 | |
| Nitzschia angustata (Smith) Grunow | 90.37821 | 475355.6581 | |
| Nitzschia frustulum (Kützing) Grunow | 2395.02488 | 117943.3576 | |
| Nitzschia inconspicua Grunow | 6371.66986 | 354435.5588 | |
| Nitzschia linearis (Agardh ex Smith) Smith | 225.94551 | 672286.9232 | |
| Nitzschia palea (Kützing) Smith | 361.51313 | 109478.3679 | |
| Nitzschia palea var. debilis (Kützing) Grunow | 1129.72848 | 192621.3999 | |
| Nitzschia palea var. tenuirostris Grunow | 587.45894 | 202852.2419 | |
| Nitzschia reversa Smith | 271.13462 | 166780.8899 | |
| Nitzschia sociabilis Hustedt | 90.37821 | 20681.07737 | |
| Nitzschia thermalis Kützing | 90.37821 | 14879.41176 | |
| Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot | 90.37821 | 25586.16096 | |
| Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 180.75641 | 92157.66108 | |
| Simonsenia delognei (Grunow) Lange-Bertalot | 406.70223 | 22814.35262 | |
| Thalassiosira weissflogii (Grunow) Fryxell et Hasle | 90.37821 | 80596.75466 | |
| Tryblionella victoriae Grunow | 180.75641 | 156379.937 | |
| Cyanophyta | |||
| Anabaena sp. 0A UL NAWQA KM | 1210.69264 | 15681.49646 | |
| Lyngbya sp. 0C UL NAWQA KM | 13620.29223 | 427677.1761 | |
| Oscillatoria limnetica Lemmermann | 16041.67752 | 555304.7776 | |
| Phormidium ambiguum Gomont | 35110.08665 | 535893.0225 | |
| Phormidium minnesotense (Tilden) Drouet | 12712.27275 | 148890.8188 | |
| Phormidium tenue (Agardh ex Gomont) Anagnostidis & Komárek | 13317.61907 | 2287038.446 | |
| Rhabdogloea smithii (Chodat) Komárek | 3632.07793 | 36213.96089 | |
| Euglenophyta | |||
| Euglena sp. 0A UL NAWQA KM | 302.67316 | 4272494.99 | |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |