LOCATION.-- Lat 42°19'14", long 88°18'46" (NAD of 1983), in NW1/4SW1/4 sec.4, T.44 N., R.8 E., McHenry County, Hydrologic Unit 07120006, on left bank at upstream side of bridge on Bull Valley Road, 2.5 mi southwest of McHenry and at mile 4.8. | |
DRAINAGE AREA.-- 15.5 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: July 1948 to October 1982. | |
SURFACE-WATER QUALITY | |
MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000. | |
BIOLOGICAL | |
ALGAE: Water year 2000. | |
BENTHIC MACROINVERTEBRATES: Water year 2000. | |
HABITAT: Water year 2000-01. | |
REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-79-2: 1970. | |
GAGE.-- Water-stage recorder and concrete control. Datum of gage is 769.56 ft above NGVD of 1929 (769.40 ft NAVD 1988). | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 276 ft3/s June 2, 1970, gage height. 4.87 ft; minimum, 1.6 ft3/s Dec. 25, 1948, gage height, 0.30 ft, result of freezeup. | |
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 40 feet downstream of Bull Valley Road and continues downstream for 525 feet. | |
| 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 7/20/2000 | |||
| Chlorophyta | |||
| Cladophora sp. | 3709.51079 | 315308.4171 | |
| Chrysophyta | |||
| Achnanthes conspicua Mayer | 449.02979 | 33930.00753 | |
| Achnanthidium affine (Grunow) Czarnecki | 4939.32768 | 347814.5706 | |
| Achnanthidium minutissimum (Kützing) Czarnecki | 44004.92028 | 2392662.698 | |
| Achnanthidium pyrenaicum (Hustedt) Kobayasi | 449.02979 | 39858.30507 | |
| Amphora pediculus (Kützing) Grunow | 13470.89368 | 1343990.119 | |
| Caloneis bacillum (Grunow) Cleve | 898.05958 | 385975.0343 | |
| Cocconeis pediculus Ehrenberg | 13021.86389 | 41814030.37 | |
| Cocconeis placentula Ehrenberg | 6286.41705 | 4579978.817 | |
| Cocconeis placentula var. euglypta (Ehrenberg) Cleve | 9654.14047 | 6629170.037 | |
| Cocconeis placentula var. lineata (Ehrenberg) Van Heurck | 6510.93195 | 7292283.935 | |
| Cymatopleura solea var. apiculata (Smith) Ralfs | 449.02979 | 2738277.145 | |
| Encyonema minutum (Hilse) Mann | 2245.14895 | 476228.9096 | |
| Encyonopsis microcephala (Grunow) Krammer | 449.02979 | 27843.09377 | |
| Gomphonema kobayasii Kociolek et Kingston | 1347.08937 | 221908.9136 | |
| Gomphonema minutum (Agardh) Agardh | 898.05958 | 299172.6729 | |
| Gomphonema parvulum (Kützing) Kützing | 449.02979 | 113721.0132 | |
| Mayamaea atomus var. permitis (Hustedt) Lange-Bertalot | 1347.08937 | 54749.56074 | |
| Navicula capitatoradiata Germain | 449.02979 | 257326.2977 | |
| Navicula cryptocephala Kützing | 898.05958 | 302216.2909 | |
| Navicula cryptotenella Lange-Bertalot ex Krammer et Lange-Bertalot | 15042.49794 | 3890226.95 | |
| Navicula erifuga Lange-Bertalot | 449.02979 | 228868.3123 | |
| Navicula tripunctata (Müller) Bory | 1796.11916 | 1677462.022 | |
| Navicula veneta Kützing | 898.05958 | 141721.1578 | |
| Nitzschia amphibia Grunow | 449.02979 | 83300.76167 | |
| Nitzschia dissipata (Kützing) Grunow | 3592.23831 | 914754.6452 | |
| Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot | 1796.11916 | 243092.2506 | |
| Planothidium rostratum (Østrup) Lange-Bertalot | 449.02979 | 34198.40867 | |
| Reimeria sinuata (Gregory) Kociolek et Stoermer | 449.02979 | 75346.45611 | |
| Rhoicosphenia abbreviata (Agardh) Lange-Bertalot | 1347.08937 | 684793.5509 | |
| Staurosirella lapponica (Grunow) Williams et Round | 449.02979 | 300173.2269 | |
| Cyanophyta | |||
| Aphanocapsa grevillei Rabenhorst | 31530.84171 | 1503666.427 | |
| Homoeothrix janthina (Bornet et Flahault) Starmach | 25039.19783 | 194599.783 | |
| Rhodophyta | |||
| Unknown Rhodophyte Florideophycidae (chantransia) | 57497.41723 | 115075590 | |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |