05527960 DATA: Benthic Macroinvertebrates, 2000

ILLINOIS RIVER BASIN

05527960 MILL CREEK AT WADSWORTH, IL

LOCATION.-- Lat 42°25'07", long 87°56'16", in SW¼ SE¼ sec.32 , T46N, R11E, Lake County, Hydrologic Unit 07120004, 69 feet downstream of Hwy 41 Bridge.

DRAINAGE AREA.-- 65.3 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

PARTIAL RECORD: Annual maximum, water years 1962-1976; Miscellaneous discharge measurements, water year 2000.

SURFACE-WATER QUALITY

MISCELLANEOUS: Water year 2000.

BIOLOGICAL

BENTHIC MACROINVERTEBRATES: Water year 2000.

FISH: Water year 2001.

HABITAT: Water year 2000.

REMARKS FOR CURRENT YEAR.--Benthic macroinvertebrate community samples were collected as part of the National Water-Quality Assessment program (NAWQA) in the upper Illinois River Basin. One quantitative sample was collected in accordance with the NAWQA protocols (Cuffney and others, 1993). The quantitative sample was a composite of macroinvertebrates from about 10 submerged tree branches. Branches were cut underwater, gathered in a 425µm mesh net, and invertebrates were washed or picked from the branches. The average length and average diameter of each branch were measured and used to calculate an approximate surface area. All samples were processed by the USGS National Water-Quality Laboratory. Phylum, Class, Order, Suborder, Family, Subfamily, and Tribe are listed and arranged according to the USGS National Water-Quality Laboratory taxonomic hierarchy. Reach A begins 167 feet downstream of Highway 41 and continues downstream for 558 feet. The surface area sampled at reach A was 0.26 m².

BENTHIC MACROINVERTEBRATES
[sp., species; A, Adults; LV, Larvae; P, Pupae; X, present; -, not found or not applicable; dam., damaged; imm., immature; indet., indeterminate; mount, poor mount; ref., reference]

PHYLUM
	Class
		Order							Reach A
			(Suborder)						7/18/2000
				Family
					Subfamily			Life stage	Quantitative sample		Laboratory notes
						(Tribe)
							Taxon		Abundance (count)	Density (number/m²)

PLATYHELMINTHES
	Turbellaria
							Turbellaria	-	6	23	-
MOLLUSCA
	Gastropoda
		Basommatophora
				Ancylidae
							Ancylidae	-	6	23	dam.
ARTHROPODA
	Malacostraca
		Amphipoda
			(Gammaridea)
				Hyalellidae
							Hyalella azteca (Saussure)	-	6	23	-
	Insecta
		Ephemeroptera
			(Furcatergalia)
				Caenidae
							Caenidae	L	6	23	imm.
			(Pisciforma)
				Baetidae
							Baetidae	L	190	742	dam.
							Baetis intercalaris McDunnough	L	524	2047	-
							Baetis sp.	L	179	699	-
			(Setisura)
				Heptageniidae
							Heptagenia sp.	L	17	66	-
							Heptageniidae	L	52	203	imm.; dam.
							Stenacron interpunctatum (Say)	L	12	47	-
							Stenacron sp.	L	17	66	-
		Trichoptera
			(Annulipalpia)
				Hydropsychidae
							Hydropsychidae	L	294	1148	imm.; dam.
					Hydropsychinae
							Cheumatopsyche sp.	L	300	1172	-
							Hydropsyche bidens Ross/orris Ross	L	12	47	-
							Hydropsyche bidens Ross	L	6	23	-
							Hydropsyche sp.	L	29	113	-
							Hydropsyche venularis Banks	L	29	113	-
		Coleoptera
			(Polyphaga)
				Elmidae
							Stenelmis sp.	L	17	66	-
		Diptera
			(Nematocera)
				Chironomidae
					Chironominae
						(Chironomini)
							Glyptotendipes sp.	L	6	23	-
							Polypedilum sp.	L	98	383	-
							Stenochironomus sp.	L	6	23	-
					Orthocladiinae
							Rheocricotopus sp.	L	6	23	-
					Tanypodinae
						(Pentaneurini)
							Thienemannimyia group sp. (Coffman and Ferrington, 1996)	L	115	449	-
				Simuliidae
							Simuliidae	L	12	47	imm.; dam.
			(Brachycera)
				Empididae
					Hemerodromiinae
							Hemerodromia sp.	L	75	293	-

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data