05551985 DATA: Benthic Macroinvertebrates, 2000

ILLINOIS RIVER BASIN

05551985 SOMONAUK CREEK AT SOMONAUK RD NR SANDWICH, IL

LOCATION.-- Lat 41°42'18", long 88°39'09", in SE¼ SE¼ SW¼ sec.3, T.37N., R.5E., DeKalb County, Hydrologic Unit 07120007, 144 feet downstream of bridge at Somonauk Road.

DRAINAGE AREA.-- 37.0 mi².

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

PARTIAL RECORD: Miscellaneous discharge measurements, water year 2000.

SURFACE-WATER QUALITY

MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, 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). A Hess sampler was used to collect five subsamples from coarse-grained substrates in flowing water. The sampler had a sampling area of 0.086 m² and was fitted with a 425 µm mesh net. 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 144 feet upstream of Somonauk Road and continues upstream for 591 feet. The surface area sampled at reach A was 0.43 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)						7/25/2000
				Family
					Subfamily			Life stage	Quantitative sample		Laboratory notes
						(Tribe)
							Taxon		Abundance (count)	Density (number/m²)

PLATYHELMINTHES
	Turbellaria
							Turbellaria	-	101	236	-
NEMATODA
							Nematoda	-	101	236	-
MOLLUSCA
	Gastropoda
		Basommatophora
				Ancylidae
							Ancylidae	-	20	47	dam.
	Bivalvia
		Veneroida
				Sphaeriidae
							Sphaeriidae	-	101	236	imm.; dam.
					Pisidiinae
							Pisidium sp.	-	161	377	-
					Sphaeriinae
							Sphaerium sp.	-	2	5	-
ANNELIDA
	Oligochaeta
		Tubificida
			(Tubificina)
				Naididae
							Naididae	-	202	473	-
				Tubificidae
							Tubificidae	-	161	377	-
ARTHROPODA
	Arachnida
							Acari	-	444	1039	-
	Malacostraca
		Decapoda
			(Pleocyemata)
				Cambaridae
					Cambarinae
							Orconectes sp.	-	1	2	-
	Insecta
		Ephemeroptera
			(Furcatergalia)
				Caenidae
							Caenis sp.	L	20	47	-
				Leptohyphidae
							Tricorythodes sp.	L	101	236	-
			(Pisciforma)
				Baetidae
							Acentrella parvula (McDunnough)	L	20	47	ref.
							Baetidae	L	101	236	imm.; dam.
							Baetis flavistriga McDunnough	L	323	756	-
							Baetis sp.	L	121	283	-
			(Setisura)
				Heptageniidae
							Heptageniidae	L	121	283	imm.; dam.
							Stenacron sp.	L	20	47	-
							Stenonema mediopunctatum (McDunnough)	L	40	94	-
		Odonata
			(Zygoptera)
				Coenagrionidae
							Argia moesta (Hagen)	L	1	2	-
							Argia sp.	L	40	94	-
			(Anisoptera)
				Aeshnidae
							Boyeria sp.	L	20	47	-
		Megaloptera
				Sialidae
							Sialis sp.	L	1	2	-
		Trichoptera
			(Spicipalpia)
				Hydroptilidae
							Hydroptilidae	P	81	189	imm.; dam.
					Hydroptilinae
							Hydroptila sp.	L	685	1602	-
			(Annulipalpia)
				Hydropsychidae
							Hydropsychidae	L	161	377	imm.; dam.
					Hydropsychinae
							Ceratopsyche bronta (Ross)	L	40	94	-
							Ceratopsyche sp.	L	81	189	-
							Cheumatopsyche sp.	L	101	236	-
							Hydropsyche depravata group	L	222	519	-
							Hydropsyche sp.	L	323	756	-
							Hydropsyche sp.	P	1	2	-
				Polycentropodidae
					Polycentropodinae
							Paranyctiophylax sp.	L	40	94	-
			(Integripalpia)
				Helicopsychidae
							Helicopsyche borealis (Hagen)	L	60	140	-
							Helicopsyche borealis (Hagen)	P	21	49	-
		Coleoptera
			(Polyphaga)
				Elmidae
							Dubiraphia sp.	A	81	189	-
							Dubiraphia sp.	L	40	94	-
							Optioservus sp.	L	20	47	-
							Stenelmis crenata (Say)	A	181	423	-
							Stenelmis sp.	L	544	1273	-
				Psephenidae
							Ectopria sp.	L	40	94	-
		Diptera
			(Nematocera)
				Chironomidae
					Chironominae
							Chironominae	P	40	94	-
						(Chironomini)
							Cryptochironomus sp.	L	60	140	-
							Dicrotendipes sp.	L	40	94	-
							Microtendipes sp.	L	40	94	-
							Polypedilum sp.	L	222	519	-
						(Tanytarsini)
							Cladotanytarsus sp.	L	20	47	-
							Paratanytarsus sp.	L	262	613	-
							Rheotanytarsus sp.	L	40	94	-
							Tanytarsus sp.	L	121	283	-
					Orthocladiinae
							Cricotopus sp.	L	222	519	-
							Cricotopus trifascia group	L	20	47	-
							Cricotopus/Orthocladius sp.	L	20	47	-
							Nanocladius sp.	L	40	94	-
							Orthocladiinae	L	40	94	dam.; mount
							Parakiefferiella sp.	L	60	140	-
							Rheocricotopus sp.	L	20	47	-
							Thienemanniella sp.	L	20	47	-
							Tvetenia sp.	L	101	236	-
					Tanypodinae
						(Pentaneurini)
							Thienemannimyia group sp. (Coffman and Ferrington, 1996)	L	101	236	-
				Simuliidae
							Simuliidae	L	60	140	imm.
			(Brachycera)
				Empididae
					Hemerodromiinae
							Hemerodromia sp.	L	40	94	-
				Tabanidae
							Tabanus sp.	L	20	47	-

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data