Station list     Available data
ILLINOIS RIVER BASIN


05586100       ILLINOIS RIVER AT VALLEY CITY, IL

 

LOCATION.-- Lat 39°42'12", long 90°38'43" (NAD of 1927), in SE1/4NW1/4 sec.34, T.15 N., R.14 W., Scott County, Hydrologic Unit 07130011, on upstream side of Norfolk & Southern Corporation Railroad bridge at Flints Creek, 0.4 mi east of Valley City, 1.8 mi downstream from Mauvaise Terre Creek, and at mile 61.3.
 

DRAINAGE AREA.-- 26,743 mi2, does not include diversion from Lake Michigan through the Chicago Sanitary and Ship Canal, which has occurred since Jan. 17, 1900.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1938 to current year. Prior to October 1960, at site 0.2 mi upstream at same datum. Prior to October 1989, published as "at Meredosia." Records are considered equivalent.
 

STAGE: Water years 1994-2002.

SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1975-93 and 1996 to current.
 

SEDIMENT: February 1980 to current year.
 

SPECIFIC CONDUCTANCE: Water years 1975-81.
 

WATER TEMPERATURE: Water years 1975-81.
 

MISCELLANEOUS: Contaminants in streambed sediments, October 1996; contaminants in fish tissue, October 1996.

BIOLOGICAL
 

ALGAE: Water years 1980-81.
 

BENTHIC MACROINVERTEBRATES: Water years 1997-98.
 

FISH: Water year 1998.
 

HABITAT: Water years 1997 and 1998.
 

GAGE.-- U.S. Army Corps of Engineer's water-stage recorder, satellite telemeter and rain gage, crest-stage gage, and water-quality monitor. Datum of gage is 418.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers).
 

REMARKS.-- Occasional regulation at low flow by navigation dam at La Grange. Since Jan. 17, 1900, flow has included diversion from Lake Michigan through Chicago Sanitary and Ship Canal. Suspended-sediment samples were collected by a local observer twice weekly with additional samples collected during high runoff periods. Since February 1994, samples used to compute sediment record have been collected at upstream side Rt. 106 bridge at Florence at mile 56.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 123,000 ft3/s, May 26-28, 1943; maximum gage height, 28.61 ft, May 26, 1943; minimum daily discharge, 1,330 ft3/s, Sept. 2, 1984.

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 3,720 mg/L, Apr. 14, 1981; minimum daily, 14 mg/L, Dec. 26, 1984, July 21, 1993.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 410,000 tons, June 4, 1980; minimum daily, 172 tons, Sept. 2, 1984.
 

REMARKS FOR CURRENT YEAR.--Sampled as part of the Lower Illinois River Basin (LIRB) National Water Quality Assessment Program (NAWQA).
SURFACE-WATER QUALITY
DIS- OXYGEN, PH ALKA- BICAR-
AGENCY AGENCY CHARGE, DIS- WATER SPE- LINITY BONATE
ANA- COL- INST. SOLVED WHOLE CIFIC WAT DIS WATER
LYZING LECTING CUBIC OXYGEN, (PER- FIELD CON- TEMPER- TEMPER- TOT IT DIS IT
SAMPLE SAMPLE GAGE FEET DIS- CENT (STAND- DUCT- ATURE ATURE FIELD FIELD
(CODE (CODE HEIGHT PER SOLVED SATUR- ARD ANCE AIR WATER MG/L AS MG/L AS
NUMBER) NUMBER) (FEET) SECOND (MG/L) ATION) UNITS) (US/CM) (DEG C) (DEG C) CACO3 HCO3
Date Time (00028) (00027) (00065) (00061) (00300) (00301) (00400) (00095) (00020) (00010) (39086) (00453)
OCT 2001
09... 1200 80020 81700 2.78 10300 8.7 90 8.2 686 21.0 16.4 162 197
DEC
17... 1200 80020 81700 5.50 17400 11.5 97 8.3 758 7.0 6.9 230 280
FEB 2002
20... 1150 80020 81700 8.87 28300 10.7 87 8.5 830 7.0 5.2 211 247
APR
10... 1000 80020 81700 10.21 34600 10.2 88 8.2 708 16.5 9.1 180 220
MAY
08... 1100 80020 81700 17.24 49800 9.9 105 8.3 599 22.0 18.2 161 196
JUN
12... 1010 80020 81700 16.08 46200 6.1 70 7.9 491 26.5 22.2 151 184
JUL
17... 1030 80020 81700 3.10 9850 7.7 98 8.3 734 32.0 27.7 223 272
AUG
15... 1020 80020 81700 2.70 8450 6.7 84 8.3 745 27.0 27.5 184 220
CAR- NITRO- NITRO- NITRO- NITRO- ORTHO- 2,6-DI-
BONATE CHLO- GEN, GEN,AM- GEN, GEN, PHOS- ETHYL ACETO- ALA-
WATER RIDE, SULFATE AMMONIA MONIA + NO2+NO3 NITRITE PHATE, PHOS- ANILINE CHLOR, CHLOR, ALPHA
DIS IT DIS- DIS- DIS- ORGANIC DIS- DIS- DIS- PHORUS WAT FLT WATER WATER, BHC
FIELD SOLVED SOLVED SOLVED TOTAL SOLVED SOLVED SOLVED TOTAL 0.7 U FLTRD DISS, DIS-
MG/L AS (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L GF, REC REC REC, SOLVED
CO3 AS CL) AS SO4) AS N) AS N) AS N) AS N) AS P) AS P) (UG/L) (UG/L) (UG/L) (UG/L)
Date (00452) (00940) (00945) (00608) (00625) (00631) (00613) (00671) (00665) (82660) (49260) (46342) (34253)
OCT 2001
09... <1 80.3 60.0 .11 .84 1.82 .025 .26 .41 <.002 .007 <.002 <.005
DEC
17... <1 62.3 71.2 E.02 .84 5.05 .023 .23 .41 <.002 .010 .007 <.005
FEB 2002
20... 5 86.3 64.8 <.04 1.0   6.95 .051 .16 .36 <.006 .027 <.004 <.005
APR
10... <1 61.1 60.6 .04 1.0   6.51 .034 .14 .40 <.006 .054 .013 <.005
MAY
08... <1 42.1 46.9 <.04 1.2   6.44 .067 .09 .28 <.006 .656 .038 <.005
JUN
12... <1 31.4 37.9 .06 2.8   4.12 .069 .11 1.32 <.006 1.00   .019 <.005
JUL
17... <1 59.6 66.0 <.04 1.2   3.27 .045 .20 .39 <.006 .092 <.004 <.005
AUG
15... 2 80.8 74.8 .08 1.0   1.39 .065 .30 .46 <.006 .052 <.004 <.005
BEN- CAR- CARBO- DEETHYL DISUL-
ATRA- FLUR- BUTYL- BARYL FURAN CYANA- DCPA ATRA- FOTON EPTC
ZINE, ALIN ATE, WATER WATER CHLOR- ZINE, WATER ZINE, DI- DI- WATER WATER
WATER, WAT FLD WATER, FLTRD FLTRD PYRIFOS WATER, FLTRD WATER, AZINON, ELDRIN FLTRD FLTRD
DISS, 0.7 U DISS, 0.7 U 0.7 U DIS- DISS, 0.7 U DISS, DIS- DIS- 0.7 U 0.7 U
REC GF, REC REC GF, REC GF, REC SOLVED REC GF, REC REC SOLVED SOLVED GF, REC GF, REC
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
Date (39632) (82673) (04028) (82680) (82674) (38933) (04041) (82682) (04040) (39572) (39381) (82677) (82668)
OCT 2001
09... .123 <.010 <.002 <.041 <.020 <.005 <.018 <.003 E.020 .043 <.005 <.02 <.002
DEC
17... .171 <.010 <.002 <.041 <.020 <.005 <.018 <.003 E.025 .008 <.005 <.02 <.002
FEB 2002
20... .205 <.010 <.002 <.041 <.020 <.005 <.018 <.003 E.041 .008 <.005 <.02 <.002
APR
10... .293 <.010 <.002 <.041 <.020 <.005 <.018 <.003 E.009 E.004 <.005 <.02 <.002
MAY
08... 5.33   <.010 <.002 <.041 <.020 E.005 <.018 <.003 E.218 .006 <.005 <.02 E.002
JUN
12... 11.5     <.010 <.002 <.041 E.012 <.020 <.020 <.003 E.365 E.004 <.005 <.02 <.002
JUL
17... 1.27   <.010 <.002 <.041 <.020 <.005 <.018 <.003 E.125 .006 <.005 <.02 <.002
AUG
15... .644 <.010 <.002 <.041 <.020 <.005 <.018 <.003 E.066 .008 <.005 <.02 <.002
ETHAL- ETHO- LIN- METHYL METHYL MOL- NAPROP-
FLUR- PROP URON AZIN- PARA- METRI- INATE AMIDE
ALIN WATER FONOFOS WATER MALA- PHOS THION METO- BUZIN WATER WATER
WAT FLT FLTRD WATER LINDANE FLTRD THION, WAT FLT WAT FLT LACHLOR SENCOR FLTRD FLTRD P,P'
0.7 U 0.7 U DISS DIS- 0.7 U DIS- 0.7 U 0.7 U WATER WATER 0.7 U 0.7 U DDE
GF, REC GF, REC REC SOLVED GF, REC SOLVED GF, REC GF, REC DISS DISS GF, REC GF, REC DISS
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
Date (82663) (82672) (04095) (39341) (82666) (39532) (82686) (82667) (39415) (82630) (82671) (82684) (34653)
OCT 2001
09... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 .055 <.006 <.002 <.007 <.003
DEC
17... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 .084 <.006 <.002 <.007 <.003
FEB 2002
20... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 .112 <.006 <.002 <.007 <.003
APR
10... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 .092 <.006 <.002 <.007 <.003
MAY
08... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 1.20   .011 <.002 <.007 <.003
JUN
12... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 2.01   <.006 <.002 <.007 <.003
JUL
17... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 .118 <.006 <.002 <.007 <.003
AUG
15... <.009 <.005 <.003 <.004 <.035 <.027 <.050 <.006 .046 <.006 <.002 <.007 <.003
PEB- PENDI- PER- PRON- PRO- PRO- TEBU- TER-
ULATE METH- METHRIN PHORATE PRO- AMIDE PROPA- PANIL PARGITE SI- THIURON BACIL
PARA- WATER ALIN CIS WATER METON, WATER CHLOR, WATER WATER MAZINE, WATER WATER
THION, FILTRD WAT FLT WAT FLT FLTRD WATER, FLTRD WATER, FLTRD FLTRD WATER, FLTRD FLTRD
DIS- 0.7 U 0.7 U 0.7 U 0.7 U DISS, 0.7 U DISS, 0.7 U 0.7 U DISS, 0.7 U 0.7 U
SOLVED GF, REC GF, REC GF, REC GF, REC REC GF, REC REC GF, REC GF, REC REC GF, REC GF, REC
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
Date (39542) (82669) (82683) (82687) (82664) (04037) (82676) (04024) (82679) (82685) (04035) (82670) (82665)
OCT 2001
09... <.007 <.002 <.010 <.006 <.011 .03 <.004 <.010 <.011 <.02 .120 .02 <.034
DEC
17... <.007 <.002 <.010 <.006 <.011 E.01 <.004 <.010 <.011 <.02 .035 <.02 <.034
FEB 2002
20... <.010 <.004 <.022 <.006 <.011 E.01 <.004 .027 <.011 <.02 .044 <.02 <.034
APR
10... <.010 <.004 <.022 <.006 <.011 E.01 <.004 <.010 <.011 <.04 .054 <.02 <.034
MAY
08... <.010 <.004 <.022 <.006 <.011 E.01 <.004 <.010 <.011 <.02 .189 E.01 <.034
JUN
12... <.010 <.004 <.022 <.006 <.011 E.01 <.004 <.010 <.011 <.02 .228 <.02 <.034
JUL
17... <.010 <.004 <.022 <.006 <.011 .02 <.004 <.010 <.011 <.02 .029 <.02 <.034
AUG
15... <.010 <.004 <.022 <.006 <.011 .04 <.004 <.010 <.011 <.02 .015 .02 <.034
TER- TER- THIO- TRIAL- TRI- SED.
BUFOS BUTHYL- BENCARB LATE FLUR- SUSP.
WATER AZINE, WATER WATER ALIN SIEVE SEDI-
FLTRD WATER, FLTRD FLTRD WAT FLT DIAM. MENT,
0.7 U DISS, 0.7 U 0.7 U 0.7 U % FINER SUS-
GF, REC REC GF, REC GF, REC GF, REC THAN PENDED
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) .062 MM (MG/L)
Date (82675) (04022) (82681) (82678) (82661) (70331) (80154)
OCT 2001
09... <.02 M <.005 .003 <.009 99 157
DEC
17... <.02 U <.005 .003 <.009 93 200
FEB 2002
20... <.02 U <.005 .009 <.009 95 241
APR
10... <.02 -- <.005 .003 <.009 95 269
MAY
08... <.02 -- <.005 .005 <.009 95 206
JUN
12... <.02 -- <.005 <.002 <.009 99 1680
JUL
17... <.02 -- <.005 <.002 <.009 98 196
AUG
15... <.02 -- <.005 <.002 <.009 96 65
Remark codes:
< -- Less than
E -- Estimated value
M -- Presence verified, not quantified
U -- Analyzed for, not detected


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data