05584500 DATA: Benthic Macroinvertebrates, 1996

Station list Available data
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 425╡m 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 0.30 m².

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

PHYLUM
	Class
		Order
			(Suborder)
				Family					Reach A
					Subfamily				9/11/96
						(Tribe)
							Taxon	Life stage	Quantitative	Qualitative

ANNELIDA
	Oligochaeta
				Tubificidae
							Tubificidae		-	X
ARTHROPODA
		Acari
							Hydrachnidia		8	-
	Malacostraca
		Isopoda
				Asellidae
							Caecidotea sp.		-	X
	Insecta
		Ephemeroptera
							Ephemeroptera	LV	120	-
			(Furcatergalia)
				Caenidae
							Caenis sp.	LV	16	-
				Leptohyphidae
							Tricorythodes sp.	LV	32	-
			(Pisciforma)
				Baetidae
							Baetidae	LV	176	X
							Baetis sp.	LV	40	-
			(Setisura)
				Heptageniidae
							Heptageniidae	LV	265	X
							Leucrocuta sp.	LV	-	X
							Stenacron interpunctatum (Say)	LV	-	X
							Stenonema sp.	LV	122	-
							Stenonema exiguum Traver	LV	-	X
							Stenonema pulchellum (Walsh)	LV	1	-
							Stenonema terminatum (Walsh)	LV	-	X
				Isonychiidae
							Isonychia sp.	LV	54	X
		Odonata
			(Zygoptera)
				Coenagrionidae
							Argia sp.	LV	-	X
			(Anisoptera)
				Aeshnidae
							Boyeria vinosa (Say)	LV	-	X
				Gomphidae
							Gomphus sp.	LV	-	X
		Hemiptera
			(Heteroptera)
				Gerridae
							Gerridae	-	8	-
					Rhagodotarsinae
							Rheumatobates sp.	A	-	X
					Trepobatinae
							Metrobates sp.	A	-	X
				Veliidae
					Microveliinae
							Microvelia sp.	LV	-	X
					Rhagoveliinae
							Rhagovelia sp.	A	-	X
		Megaloptera
				Corydalidae
					Corydalinae
							Corydalus cornutus (Linnaeus)	LV	3	X
		Trichoptera
							Trichoptera	LV	8	-
			(Annulipalpia)
				Hydropsychidae
							Hydropsychidae	LV	392	X
					Hydropsychinae
							Cheumatopsyche sp.	LV	8	X
							Hydropsyche sp.	LV	72	-
							Hydropsyche bidens Ross	LV	24	-
							Hydropsyche rossi Flint, Voshell, and Parker/simulans Ross	LV	-	X
							Potamyia flava (Hagen)	LV	-	X
		Coleoptera
			(Polyphaga)
				Scirtidae
							Scirtidae	LV	-	X
				Dryopidae
							Helichus lithophilus (Germar)	A	11	X
				Elmidae
							Elmidae	LV	16	-
							Dubiraphia sp.	LV	-	X
							Macronychus glabratus Say	A	1	X
							Stenelmis sp.	A	-	X
							Stenelmis sp.	LV	9	X
							Stenelmis grossa Sanderson	A	-	X
		Diptera
							Diptera	P	8	-
			(Nematocera)
				Ceratopogonidae
					Ceratopogoninae
							Probezzia sp.	LV	-	X
				Chironomidae
							Chironomidae	LV	284	X
							Chironomidae	P	8	-
					Chironominae
							Chironominae	P	-	X
						(Chironomini)
							Chironomini	LV	-	X
							Cryptochironomus sp.	LV	-	X
							Dicrotendipes sp.	LV	-	X
							Glyptotendipes sp.	LV	-	X
							Harnischia sp.	LV	-	X
							Polypedilum sp.	LV	-	X
						(Tanytarsini)
							Cladotanytarsus sp.	LV	-	X
							Rheotanytarsus sp.	LV	-	X
							Tanytarsus sp.	LV	-	X
					Orthocladiinae
							Rheocricotopus sp.	LV	-	X
					Tanypodinae
						(Macropelopiini)
							Macropelopia sp.	LV	-	X
						(Pentaneurini)
							Ablabesmyia sp.	LV	-	X
							Larsia sp.	LV	-	X
							Thienemannimyia group sp.	LV	-	X
				Simuliidae
							Simuliidae	LV	8	-
			(Brachycera)
				Empididae
							Hemerodromia sp.	LV	16	-