05583000 DATA: Benthic Macroinvertebrates, 1996

ILLINOIS RIVER BASIN

05583000 SANGAMON RIVER NEAR OAKFORD, IL

LOCATION.-- Lat 40°07'26", long 89°59'06", in NW1/4SE1/4 sec.3, T.19 N., R.8 W., Mason County, Hydrologic Unit 07130008, on right bank at downstream side of bridge on State Highway 97, 300 ft upstream from a railroad bridge, 0.8 mi downstream from Crane Creek, 1.8 mi northwest of Oakford, and at mile 25.7.

DRAINAGE AREA.-- 5,093 mi².

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

DISCHARGE: October 1909 to October 1911, December 1911 to March 1912, August 1914 to June 1919, March 1921 to September 1922, October 1928 to December 1933, October 1939 to current year. Monthly discharge only for some periods, published in WSP 1308.

STAGE: Water years 1994-2000.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-94 and 1998.

SEDIMENT: Water years 1981, 1983-86, 1995-97.

SPECIFIC CONDUCTANCE: Water years 1979-81.

WATER TEMPERATURE: Water years 1976-77, 1979-81.

MISCELLANEOUS: Contaminants in streambed sediments, August 1996; contaminants in fish tissue, August 1996; streambank sediment size, October 1997; streambed sediment size, October 1997.

BIOLOGICAL: Algae, water year 1981; benthic macroinvertebrates, September 1996; fish, July 1997.

REVISED RECORDS.-- WSP 715: 1922(M). WSP 1175: 1912(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and artificial control. Datum of gage is 452.88 ft above sea level (U.S. Army Corps of Engineers bench mark). Prior to Jan. 1, 1934, nonrecording gage at site 2.4 mi upstream at datum 458.66 ft above sea level. Oct. 1, 1939, to May 14, 1940, nonrecording gage at present site at sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 123,000 ft³/s, May 20, 1943, gage height, 25.63 ft.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 3,540 mg/L, June 9, 1984; minimum daily, 1 mg/L, Dec. 7, 8, 1996, Jan. 11, 1997.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 120,000 tons, Feb. 24, 1985; minimum daily, 1.6 tons, Dec. 7, 1996.

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 is located 591 ft upstream of the State Highway 97 bridge (gage), and continues upstream for 3264 ft. The surface area sampled at reach A was 0.25 m².

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

PHYLUM
	Class
		Order
			(Suborder)
				Family					Reach A
					Subfamily				9/10/96
						(Tribe)
							Taxon	Life stage	Quantitative	Qualitative

ANNELIDA
	Oligochaeta
							Oligochaeta		64	-
				Naididae
							Naididae		48	-
				Tubificidae
							Tubificidae		-	X
ARTHROPODA
	Insecta
		Ephemeroptera
							Ephemeroptera	A	16	-
							Ephemeroptera	LV	80	-
			(Furcatergalia)
				Leptohyphidae
							Tricorythodes sp.	LV	-	X
			(Pisciforma)
				Baetidae
							Baetidae	LV	208	X
							Labiobaetis sp.	LV	-	X
			(Setisura)
				Heptageniidae
							Stenonema mexicanum (Ulmer)	LV	-	X
				Isonychiidae
							Isonychia sp.	LV	-	X
		Odonata
			(Zygoptera)
				Coenagrionidae
							Argia sp.	LV	-	X
			(Anisoptera)
		Hemiptera
			(Heteroptera)
				Corixidae
							Corixidae	-	5	-
					Corixinae
						Corixini
							Trichocorixa sp.	-	1	-
							Trichocorixa sp.	A	-	X
				Gerridae
					Rhagodotarsinae
							Rheumatobates sp.	A	-	X
				Veliidae
					Rhagoveliinae
							Rhagovelia sp.	A	-	X
		Megaloptera
				Corydalidae
					Corydalinae
							Corydalus cornutus (Linnaeus)	LV	-	X
		Trichoptera
							Trichoptera	LV	176	-
			(Annulipalpia)
				Hydropsychidae
							Hydropsychidae	LV	1072	X
					Hydropsychinae
							Cheumatopsyche sp.	LV	-	X
							Hydropsyche sp.	LV	865	-
							Hydropsyche sp.	P	1	X
							Hydropsyche bidens Ross	LV	946	X
							Hydropsyche rossi Flint, Voshell, and Parker/simulans Ross	LV	144	X
							Potamyia flava (Hagen)	LV	-	X
		Coleoptera
			(Adephaga)
				Gyrinidae
							Gyrinus analis Say	A	-	X
		Diptera
			(Nematocera)
				Chironomidae
							Chironomidae	A	-	X
							Chironomidae	LV	2404	X
							Chironomidae	P	64	-
					Chironominae
							Chironominae	P	-	X
						(Chironomini)
							Chironomini	LV	-	X
							Glyptotendipes sp.	LV	-	X
							Parachironomus sp.	LV	-	X
							Polypedilum sp.	LV	-	X
						(Tanytarsini)
							Rheotanytarsus sp.	LV	-	X
					Orthocladiinae
							Corynoneura sp.	LV	-	X
							Cricotopus sp.	LV	-	X
							Cricotopus/Orthocladius sp.	LV	-	X
					Tanypodinae
						(Pentaneurini)
							Larsia sp.	LV	-	X
							Thienemannimyia group sp.	LV	-	X
				Simuliidae
							Simuliidae	LV	114	X
							Simulium sp.	LV	-	X
			(Brachycera)
				Empididae
							Chelifera/Hemerodromia sp.	P	-	X
							Hemerodromia sp.	LV	32	-

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data