05584500 DATA: Benthic Macroinvertebrates, 1997

ILLINOIS RIVER BASIN

05584500 LA MOINE RIVER AT COLMAR, IL

LOCATION.-- Lat 40°19'49", long 90°53'46", in SE1/4SW1/4 sec.18, T.4 N., R.4 W., McDonough County, Hydrologic Unit 07130010, on right bank at downstream side of bridge on State Highway 61, 0.2 mi downstream from a railroad bridge, 1 mi southwest of Colmar, 1.8 mi upstream from Troublesome Creek, and at mile 61.8.

DRAINAGE AREA.-- 655 mi².

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

DISCHARGE: October 1944 to current year.

STAGE: Water years 1994-2000.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1975-91 and 1998.

MISCELLANEOUS: Contaminants in streambed sediments, July 1997; contaminants in fish tissue, July 1997; streambank sediment size, October 1997; streambed sediment size, October 1997.

BIOLOGICAL: Benthic macroinvertebrates, September 1996, September 1997, and September 1998; fish, July 1997 and July 1998.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 491.53 ft above sea level. Prior to July 13, 1945, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 38,900 ft³/s, Mar. 5, 1985, gage height, 26.61 ft; maximum gage height, 27.03 ft, Jan. 3, 1965 (ice jam); no flow part of each day Dec. 8, 9, 12, 13, 17, 21, 1955, due to temporary dam upstream; no flow Oct. 19, 1988.

REMARKS FOR CURRENT YEAR.--Benthic macroinvertebrate community samples were collected as part of the National Water-Quality Assessment program (NAWQA) in the lower Illinois River Basin. One quantitative (Richest-Targeted Habitat) and one qualitative (Qualitative-Multiple Habitat) sample were 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. The qualitative sample was collected from many habitat types within the sampling reach to obtain as complete a list of invertebrate taxa as possible. 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. The reach begins 1326 ft downstream of the State Highway 61 bridge (gage), and continues downstream 1283 ft. The surface area sampled at reach A was 0.33 m².

BENTHIC MACROINVERTEBRATES
[sp., species; A, Adults; LV, Larvae; P, Pupae; X, present; -, not found]

PHYLUM
	Class
		Order
			(Suborder)
				Family					Reach A
					Subfamily				9/4/97
						(Tribe)
							Taxon	Life stage	Quantitative	Qualitative

CNIDARIA
				Hydridae
							Hydra sp.		2	-
MOLLUSCA
	Gastropoda
				Lymnaeidae
							Lymnaeidae		-	X
				Physidae
							Physidae		-	X
ANNELIDA
	Oligochaeta
				Naididae
							Naididae		2	-
				Tubificidae
							Tubificidae		-	X
							Branchiura sowerbyi Beddard		-	X
ARTHROPODA
	Malacostraca
		Amphipoda
				Crangonyctidae
							Crangonyx sp.		-	X
	Insecta
		Ephemeroptera
			(Furcatergalia)
				Leptophlebiidae
							Leptophlebiidae	LV	2	-
				Caenidae
							Caenis sp.	LV	12	-
				Leptohyphidae
							Tricorythodes sp.	LV	53	-
			(Pisciforma)
				Baetidae
							Baetidae	LV	139	-
							Baetis sp.	LV	62	X
							Labiobaetis sp.	LV	-	X
			(Setisura)
				Heptageniidae
							Heptageniidae	LV	58	X
							Heptagenia flavescens (Walsh)	LV	7	-
							Stenacron sp.	LV	17	-
							Stenacron interpunctatum (Say)	LV	2	X
							Stenonema sp.	LV	50	-
							Stenonema exiguum Traver	LV	2	X
							Stenonema terminatum (Walsh)	LV	14	X
				Isonychiidae
							Isonychia sp.	LV	2	X
		Odonata
			(Zygoptera)
				Calopterygidae
							Hetaerina sp.	LV	2	-
				Coenagrionidae
							Argia sp.	LV	2	X
			(Anisoptera)
				Gomphidae
							Gomphidae	LV	-	X
		Hemiptera
			(Heteroptera)
				Corixidae
							Corixidae	LV	-	X
					Corixinae
						(Corixini)
							Trichocorixa sp.	A	-	X
				Gerridae
					Trepobatinae
							Metrobates sp.	A	2	-
		Megaloptera
				Corydalidae
					Corydalinae
							Corydalus cornutus (Linnaeus)	LV	10	X
		Trichoptera
			(Annulipalpia)
				Philopotamidae
					Chimarrinae
							Chimarra sp.	LV	-	X
				Hydropsychidae
							Hydropsychidae	LV	367	-
							Hydropsychidae	P	-	X
					Hydropsychinae
							Cheumatopsyche sp.	LV	2	X
							Hydropsyche sp.	P	2	-
							Hydropsyche bidens Ross	LV	82	X
							Hydropsyche bidens Ross/orris Ross	LV	12	-
							Hydropsyche rossi Flint, Voshell, and Parker/simulans Ross	LV	82	X
				Polycentropodidae
							Polycentropodidae	LV	5	-
					Polycentropodinae
							Paranyctiophylax sp.	LV	2	-
			(Integripalpia)
				Leptoceridae
							Leptoceridae	LV	12	-
					Leptocerinae
							Nectopsyche sp.	LV	-	X
		Lepidoptera
							Lepidoptera	LV	2	-
		Coleoptera
			(Adephaga)
				Dytiscidae
					Hydroporinae
						(Hydroporini)
							Hydroporini	A	-	X
					Laccophilinae
						(Laccophilini)
							Laccophilus sp.	A	-	X
			(Polyphaga)
				Hydrophilidae
							Helochares sp.	A	-	X
							Laccobius sp.	A	-	X
				Scirtidae
							Scirtidae	LV	-	X
				Dryopidae
							Helichus lithophilus (Germar)	A	17	-
							Helichus lithophilus (Germar)	LV	-	X
				Elmidae
							Elmidae	LV	5	-
							Ancyronyx variegata (Germar)	LV	-	X
							Dubiraphia sp.	A	2	-
							Dubiraphia sp.	LV	-	X
							Macronychus glabratus Say	A	5	X
							Macronychus glabratus Say	LV	22	-
							Stenelmis sp.	LV	-	X
		Diptera
			(Nematocera)
				Chironomidae
							Chironomidae	LV	-	X
					Chironominae
							Chironominae	P	12	X
						(Chironomini)
							Chironomini	LV	-	X
							Chironomus sp.	LV	-	X
							Cryptochironomus sp.	LV	-	X
							Cryptotendipes sp.	LV	-	X
							Dicrotendipes sp.	LV	-	X
							Glyptotendipes sp.	LV	2	-
							Harnischia sp.	LV	-	X
							Phaenopsectra sp.	LV	5	-
							Polypedilum sp.	LV	29	X
							Stelechomyia sp.	LV	2	-
							Stenochironomus sp.	LV	2	-
							Tribelos sp.	LV	-	X
						(Tanytarsini)
							Tanytarsini	LV	2	-
							Cladotanytarsus sp.	LV	2	-
							Rheotanytarsus sp.	LV	19	X
							Tanytarsus sp.	LV	7	X
					Orthocladiinae
							Orthocladiinae	LV	-	X
							Orthocladiinae	P	2	-
							Rheocricotopus sp.	LV	7	-
							Thienemanniella sp.	LV	-	X
					Tanypodinae
						(Pentaneurini)
							Ablabesmyia sp.	LV	2	X
							Labrundinia sp.	LV	-	X
							Thienemannimyia group sp.	LV	5	X
						(Procladiini)
							Procladius sp.	LV	-	X
				Simuliidae
							Simuliidae	LV	74	X
							Simulium sp.	LV	14	-
							Simulium sp.	P	5	-
			(Brachycera)
							Brachycera	P	-	X
				Empididae
							Hemerodromia sp.	LV	10	-
				Tabanidae
							Tabanidae	LV	-	X
							Tabanus sp.	LV	-	X

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data