05533000 DATA: Benthic Macroinvertebrates, 2000

ILLINOIS RIVER BASIN

05533000 FLAG CREEK NEAR WILLOW SPRINGS, IL

LOCATION.-- Lat 41°44'20", long 87°53'47", in SE1/4NE1/4 sec.31, T.38 N., R.12 E., Cook County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on German Church Road, 1.1 mi northwest of Willow Springs, and at mile 2.2.

DRAINAGE AREA.-- 16.5 mi².

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

DISCHARGE: July 1951 to current year.

STAGE: Water years 1994-2001.

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.

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 606.36 ft above sea level. Prior to June 17, 1963, water-stage recorder at same site at datum 3.73 ft higher. June 17, 1963, to June 26, 1964, nonrecording gage at site 0.5 mi upstream at datum 4.82 ft higher.

REMARKS.-- Effluent from sewage-treatment plant 2 mi upstream.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,680 ft³/s, Sept. 14, 1961, gage height, 13.71 ft, present datum; minimum daily, 0.1 ft³/s, Dec. 9, 1957.

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 36 feet upstream of German Church 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)						7/13/2000
				Family
					Subfamily			Life stage	Quantitative sample		Laboratory notes
						(Tribe)
							Taxon		Abundance (count)	Density (number/m²)

MOLLUSCA
	Gastropoda
		Basommatophora
				Ancylidae
							Ancylidae	-	58	113	indet.
	Bivalvia
		Veneroida
				Sphaeriidae
					Pisidiinae
							Pisidium sp.	-	1	2	-
					Sphaeriinae
							Musculium sp.	-	19	37	-
ANNELIDA
	Oligochaeta
		Tubificida
			(Tubificina)
				Tubificidae
							Tubificidae	-	422	823	-
		Enchytraeida
				Enchytraeidae
							Enchytraeidae	-	19	37	-
ARTHROPODA
	Arachnida
							Acari	-	134	261	-
	Malacostraca
		Decapoda
			(Pleocyemata)
				Cambaridae
					Cambarinae
							Orconectes sp.	-	1	2	-
		Isopoda
			(Asellota)
				Asellidae
							Caecidotea sp.	-	250	487	-
	Insecta
		Ephemeroptera
			(Pisciforma)
				Baetidae
							Baetis sp.	L	19	37	-
			(Setisura)
				Heptageniidae
							Heptageniidae	L	19	37	imm.
		Trichoptera
			(Spicipalpia)
				Hydroptilidae
					Hydroptilinae
							Hydroptila sp.	L	192	374	-
			(Annulipalpia)
				Hydropsychidae
							Hydropsychidae	L	1382	2694	imm.; dam.
					Hydropsychinae
							Cheumatopsyche sp.	L	902	1758	-
							Hydropsyche depravata group	L	173	337	-
							Hydropsyche sp.	L	864	1684	-
			(Integripalpia)
				Leptoceridae
							Leptoceridae	L	19	37	imm.
		Coleoptera
			(Polyphaga)
				Elmidae
							Stenelmis crenata (Say)	A	58	113	-
							Stenelmis sp.	L	250	487	-
		Diptera
			(Nematocera)
				Chironomidae
					Chironominae
						(Chironomini)
							Polypedilum sp.	L	192	374	-
					Orthocladiinae
							Cricotopus bicinctus group	L	96	187	-
							Cricotopus sp.	L	422	823	-
							Cricotopus trifascia group	L	96	187	-
							Cricotopus/Orthocladius sp.	L	19	37	-
							Orthocladiinae	P	19	37	-
							Thienemanniella sp.	L	19	37	-
					Tanypodinae
						(Pentaneurini)
							Thienemannimyia group sp. (Coffman and Ferrington, 1996)	L	38	74	-
				Simuliidae
							Simuliidae	L	96	187	imm.
							Simulium sp.	L	58	113	-
							Simulium sp.	P	19	37	-
				Tipulidae
					Tipulinae
							Tipula sp.	L	1	2	-

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data