Station list     Available data
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