Station list     Available data
ILLINOIS RIVER BASIN


05586100       ILLINOIS RIVER AT VALLEY CITY, IL



LOCATION.-- Lat 39°42'12", long 90°38'43", 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 1995-2001.
SURFACE-WATER QUALITY
 

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

SEDIMENT: Water years 1980 to current.
 

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 sea level (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- PH
AGENCY AGENCY CHARGE, WATER SPE- MAGNE- POTAS-
ANA- COL- INST. WHOLE CIFIC CALCIUM SIUM, SIUM,
LYZING LECTING CUBIC OXYGEN, FIELD CON- TEMPER- TEMPER- DIS- DIS- DIS-
SAMPLE SAMPLE GAGE FEET DIS- (STAND- DUCT- ATURE ATURE SOLVED SOLVED SOLVED
DATE TIME (CODE (CODE HEIGHT PER SOLVED ARD ANCE AIR WATER (MG/L (MG/L (MG/L
NUMBER) NUMBER) (FEET) SECOND (MG/L) UNITS) (US/CM) (DEG C) (DEG C) AS CA) AS MG) AS K)
(00028) (00027) (00065) (00061) (00300) (00400) (00095) (00020) (00010) (00915) (00925) (00935)
OCT 2000
10... 1430 80020 81700 3.54 14300 9.4 7.9 618 20.0 13.5 51.0 21.2 6.21
NOV 2000
15... 1430 80020 81700 5.68 20600 10.9 8.2 801 9.5 7.0 70.2 30.6 5.44
DEC 2000
11... 1450 80020 81700 2.42 10800 13.8 8.4 812 -9.0 1.7 71.5 31.3 4.52
JAN 2001
17... 1410 80020 81700 6.39 -- 12.8 7.7 1170 -3.0 0 74.7 32.8 5.08
FEB 2001
13... 1500 80020 81700 14.01 53900 12.4 7.5 572 5.5 1.8 47.8 19.4 4.53
MAR 2001
20... 1400 80020 81700 13.71 48000 10.9 7.7 679 14.5 6.3 65.8 27.3 3.02
APR 2001
25... 1150 80020 81700 10.96 30400 8.3 7.9 759 21.0 17.8 73.3 30.1 3.36
MAY 2001
16... 1520 80020 81700 11.62 -- 8.4 7.9 778 30.0 22.0 69.6 30.4 3.45
JUN 2001
13... 1520 80020 81700 15.52 -- 5.1 7.7 542 31.0 24.1 54.5 23.2 4.06
JUL 2001
19... 1430 80020 81700 2.85 8800 5.6 7.8 720 25.5 27.8 60.9 28.9 3.87
AUG 2001
22... 1330 80020 81700 1.91 7290 7.6 7.9 778 32.0 26.9 59.1 26.6 5.24
ALKA- BICAR- CAR- SOLIDS, NITRO- NITRO- NITRO- NITRO-
LINITY BONATE BONATE CHLO- FLUO- SILICA, RESIDUE GEN, GEN,AM- GEN,AM- GEN,
SODIUM, WAT DIS WATER WATER RIDE, RIDE, DIS- SULFATE AT 180 AMMONIA MONIA + MONIA + NO2+NO3
DIS- TOT IT DIS IT DIS IT DIS- DIS- SOLVED DIS- DEG. C DIS- ORGANIC ORGANIC DIS-
SOLVED FIELD FIELD FIELD SOLVED SOLVED (MG/L SOLVED DIS- SOLVED DIS. TOTAL SOLVED
DATE (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L AS (MG/L SOLVED (MG/L (MG/L (MG/L (MG/L
AS NA) CACO3 HCO3 CO3 AS CL) AS F) SIO2) AS SO4) (MG/L) AS N) AS N) AS N) AS N)
(00930) (39086) (00453) (00452) (00940) (00950) (00955) (00945) (70300) (00608) (00623) (00625) (00631)
OCT 2000
10... 47.3 156 190 -- 70.0 .4 6.2 59.6 380 .050 .56 .89 2.54
NOV 2000
15... 55.8 194 237 -- 82.6 .5 5.0 80.5 476 .100 .56 1.2 3.55
DEC 2000
11... 45.6 224 273 -- 74.3 .4 6.4 79.8 492 <.041 <.10 1.1 4.22
JAN 2001
17... 116 235 287 -- 183 .4 6.9 87.5 700 -- -- -- --
FEB 2001
13... 30.2 140 170 -- 57.6 .2 6.8 37.7 327 .333 .84 1.8 5.87
MAR 2001
20... 30.2 189 231 -- 59.6 .3 7.3 57.5 411 .126 .59 1.0 6.97
APR 2001
25... 37.5 203 247 -- 69.5 .3 4.3 61.7 463 <.041 .44 1.1 7.10
MAY 2001
16... 42.0 218 259 4 74.4 .3 2.6 65.9 460 <.040 .40 1.3 4.43
JUN 2001
13... 19.3 153 187 -- 37.8 .3 7.4 40.9 324 <.040 .54 1.2 6.81
JUL 2001
19... 40.7 196 240 -- 65.7 .4 3.0 64.1 411 .140 .59 .82 2.40
AUG 2001
22... 58.2 203 247 -- 89.1 .5 6.2 69.7 457 <.040 .46 .93 1.28
NITRO- PHOS- CARBON, 2,4-D 2,6-DI-
GEN, PHOS- PHORUS CARBON, ORGANIC MANGA- METHYL 2,4-DB ETHYL
NITRITE PHORUS ORTHO, PHOS- ORGANIC PARTIC- IRON, NESE, ESTER, WATER, ANILINE
DIS- DIS- DIS- PHORUS DIS- ULATE DIS- DIS- 2,4,5-T WATER 2,4-D, FLTRD, WAT FLT
SOLVED SOLVED SOLVED TOTAL SOLVED TOTAL SOLVED SOLVED DIS- FLTRD DIS- GF 0.7U 0.7 U
DATE (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L (UG/L SOLVED REC SOLVED REC GF, REC
AS N) AS P) AS P) AS P) AS C) AS C) AS FE) AS MN) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(00613) (00666) (00671) (00665) (00681) (00689) (01046) (01056) (39742) (50470) (39732) (38746) (82660)
OCT 2000
10... .017 .359 .331 .532 5.7 2.8 M <3.2 <.04 -- <.11 <.10 <.002
NOV 2000
15... .018 .471 .427 .748 4.5 5.1 <10 <3.2 <.12 -- <.11 <.13 --
DEC 2000
11... .027 <.060 .278 .483 19 -- <10 9.1 <.04 -- .11 <.10 <.002
JAN 2001
17... -- -- -- -- 4.2 1.0 <10 31.3 <.04 -- <.11 <.17 <.002
FEB 2001
13... .041 .204 .185 .638 -- -- 10 27.3 <.04 -- <.11 <.10 <.002
MAR 2001
20... .043 .151 .136 .318 4.4 2.2 <10 E2.6 <.04 -- <.11 <.10 <.002
APR 2001
25... .051 .165 .152 .407 3.8 >5.0 M <3.2 -- <.086 .09 <.05 <.002
MAY 2001
16... .072 .179 .168 .312 4.0 3.4 <10 <3.0 -- <.009 .17 <.02 <.002
JUN 2001
13... .079 .154 .123 .429 4.3 4.2 <10 <3.0 -- <.009 .05 <.02 <.002
JUL 2001
19... .026 .252 .241 .369 6.1 2.7 <10 <3.0 -- <.009 .08 <.02 <.002
AUG 2001
22... .137 .362 E.321 .456 5.1 3.2 <10 <3.0 -- <.009 .05 <.02 <.002
3HYDRXY 3-KETO ACIFL- ALDI- ALDICA- ALDI- BEN-
CARBO- CARBO- ACETO- UORFEN ALA- CARB RB SUL- CARB, ATRA- BENDIO- FLUR-
FURAN FURAN CHLOR, WATER, CHLOR, SULFONE FOXIDE, WATER, ALPHA ZINE, CARB, ALIN BENOMYL
WAT,FLT WATER WATER FLTRD, WATER, WAT,FLT WAT,FLT FLTRD, BHC WATER, WATER WAT FLD WATER
GF 0.7U FLTRD FLTRD GF 0.7U DISS, GF 0.7U GF 0.7U GF 0.7U DIS- DISS, FLTRD 0.7 U FLTRD
DATE REC REC REC REC REC, REC REC REC SOLVED REC REC GF, REC 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)
(49308) (50295) (49260) (49315) (46342) (49313) (49314) (49312) (34253) (39632) (50299) (82673) (50300)
OCT 2000
10... <.23 -- <.004 <.05 <.002 <.47 <.16 <1.82 <.005 .096 -- <.010 --
NOV 2000
15... <.01 -- -- <.05 -- <.26 <.26 <.21 -- -- -- -- --
DEC 2000
11... <.14 -- .007 <.05 <.002 <.20 <.36 <1.34 <.005 .107 -- <.010 --
JAN 2001
17... <.21 -- .067 <.05 <.002 <.20 <.27 <1.53 <.005 .359 -- <.010 --
FEB 2001
13... <.24 -- .029 <.12 <.002 <.20 <.02 <.40 <.005 .122 -- <.010 --
MAR 2001
20... <.56 -- .014 <.05 .004 <.20 <.17 <.21 <.005 .138 -- <.010 --
APR 2001
25... <.06 <.072 .181 <.06 .018 <.16 <.03 <.08 <.005 .787 <.061 <.010 E.011
MAY 2001
16... <.01 <1.50 .763 <.01 .012 <.02 <.01 <.04 <.005 4.24 <.025 <.010 <.004
JUN 2001
13... <.01 <1.50 .453 <.01 .022 <.02 <.01 <.04 <.005 E3.09 <.025 <.010 <.004
JUL 2001
19... <.01 <1.50 .102 <.01 <.002 <.02 <.01 <.04 <.005 .652 <.025 <.010 <.004
AUG 2001
22... <.01 <1.50 .022 <.01 <.002 <.02 <.01 <.04 <.005 .274 <.025 <.010 <.004
BEN- BENTA- BRO- CAR- CAR- CARBO- CARBO- CHLOR- CHLORO-
SUL- ZON, BRO- MOXYNIL BUTYL- CAF- BARYL, BARYL FURAN, FURAN AMBEN, CHLORI- THALO-
FURON WATER, MACIL, WATER, ATE, FEINE, WATER, WATER WATER, WATER METHYL MURON, NIL,
METHYL FLTRD, WATER, FLTRD, WATER, WATER FLTRD, FLTRD FLTRD, FLTRD ESTER WATER WAT,FLT
WAT FLT GF 0.7U DISS, GF 0.7U DISS, FLTRD GF 0.7U 0.7 U GF 0.7U 0.7 U WATER FLTRD GF 0.7U
DATE REC REC REC REC REC REC REC GF, REC REC GF, REC FLTRD REC 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)
(61693) (38711) (04029) (49311) (04028) (50305) (49310) (82680) (49309) (82674) (61188) (50306) (49306)
OCT 2000
10... -- <.04 <1.17 <.07 <.002 -- <.02 <.041 <.45 <.020 <.14 -- <.28
NOV 2000
15... -- <.04 <.74 <.07 -- -- <.02 -- <.54 -- <.14 -- <.28
DEC 2000
11... -- <.04 <1.14 <.07 <.002 -- <.02 <.041 <.40 <.020 <.14 -- <.13
JAN 2001
17... -- <.04 <.33 <.07 <.002 -- <.02 E.006 <.94 <.020 <.14 -- <.13
FEB 2001
13... -- <.04 <.14 <.07 <.002 -- <.02 <.041 <.29 <.020 <.14 -- <.13
MAR 2001
20... -- <.04 <.35 <.07 <.002 -- <.02 <.041 <.29 <.020 <.14 -- <.13
APR 2001
25... <.0482 E.04 E.03 M <.002 E.065 <.06 <.041 <.06 <.020 <.11 <.037 <.05
MAY 2001
16... <.0158 E.05 E.02 <.02 <.002 <.010 <.03 <.041 <.01 <.020 <.02 E.023 <.04
JUN 2001
13... <.0158 E.06 E.04 <.02 <.002 .020 <.03 <.041 M <.020 <.02 <.010 <.04
JUL 2001
19... <.0158 E.07 E.01 <.02 <.002 <.010 <.03 <.041 <.01 <.020 <.02 <.010 <.04
AUG 2001
22... <.0158 E.02 E.09 <.02 <.002 <.010 <.03 <.041 <.01 <.020 <.02 <.010 <.04
CLOPYR- DACTHAL DEETHYL DEETHYL DEISO- DICHLO- DICHLOR
ALID, CYANA- SI- MONO- DCPA ATRA- DEISO- PROPYL DICAMBA BENIL, PROP,
CHLOR- WATER, ZINE, CLOATE, ACID, WATER ZINE, PROPYL ATRAZIN DI- WATER, WATER, WATER,
PYRIFOS FLTRD, WATER, WATER, WAT,FLT FLTRD WATER, ATRAZIN WATER, AZINON, FLTRD, FLTRD, FLTRD,
DIS- GF 0.7U DISS, DISS, GF 0.7U 0.7 U DISS, DISS, DISS, DIS- GF 0.7U GF 0.7U GF 0.7U
DATE SOLVED REC REC REC REC GF, REC REC REC REC SOLVED REC REC 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)
(38933) (49305) (04041) (04031) (49304) (82682) (04040) (04039) (04038) (39572) (38442) (49303) (49302)
OCT 2000
10... <.005 <.42 <.018 -- <.07 <.003 E.036 -- -- .024 <.04 <.05 <.05
NOV 2000
15... -- <.42 -- -- <.24 -- -- -- -- -- <.04 <.05 <.10
DEC 2000
11... <.005 <.42 <.018 -- <.07 <.003 E.040 -- -- .010 <.04 <.05 <.05
JAN 2001
17... <.005 <.42 <.018 -- <.07 <.003 E.029 -- -- .017 <.04 <.23 <.05
FEB 2001
13... <.005 <.42 E.016 -- <.07 <.003 E.046 -- -- E.004 <.04 <.05 <.05
MAR 2001
20... <.005 <.42 E.008 -- <.07 <.003 E.041 -- -- E.002 <.04 <.05 <.05
APR 2001
25... <.005 <.04 E.008 <.05 <.07 <.003 E.056 E.17 <.07 .009 E.02 -- <.05
MAY 2001
16... <.005 .03 <.018 <.01 <.01 <.003 E.134 E.06 E.06 .007 .21 -- <.01
JUN 2001
13... E.003 <.01 E.012 <.01 <.01 <.003 E.398 <.01 E.07 .009 .13 -- <.01
JUL 2001
19... <.005 <.01 <.018 <.01 <.01 <.003 E.025 <.01 E.03 .008 .04 -- <.01
AUG 2001
22... <.005 <.01 <.018 <.01 <.01 <.003 E.027 <.01 <.04 .011 .08 -- <.01
DISUL- ETHAL- ETHO- FEN- FLUO-
DINOSEB DIPHEN- FOTON DIURON, EPTC FLUR- PROP URON, FLUMET- METURON
DI- WATER, AMID, WATER WATER, DNOC WATER ALIN WATER WATER, SULAM WATER, FONOFOS
ELDRIN FLTRD, WATER, FLTRD FLTRD, WAT,FLT FLTRD WAT FLT FLTRD FLTRD, WATER FLTRD, WATER
DIS- GF 0.7U DISS, 0.7 U GF 0.7U GF 0.7U 0.7 U 0.7 U 0.7 U GF 0.7U FLTRD GF 0.7U DISS
DATE SOLVED REC REC GF, REC REC REC GF, REC GF, REC GF, REC REC REC REC 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)
(39381) (49301) (04033) (82677) (49300) (49299) (82668) (82663) (82672) (49297) (61694) (38811) (04095)
OCT 2000
10... <.005 <.09 -- <.021 <.10 <.25 <.002 <.009 <.005 <.52 -- <.06 <.003
NOV 2000
15... -- <.17 -- -- M <.25 -- -- -- <.07 -- <.06 --
DEC 2000
11... <.005 <.09 -- <.021 <.06 <.25 <.002 <.009 <.005 <.34 -- <.06 <.003
JAN 2001
17... <.005 <.22 -- <.021 <.22 <.25 <.002 <.009 <.005 <.18 -- <.06 <.003
FEB 2001
13... <.005 <.09 -- <.021 <.06 <.25 E.004 <.009 <.005 <.16 -- <.06 <.003
MAR 2001
20... <.005 <.09 -- <.021 <.06 <.25 <.002 <.009 <.005 <.21 -- <.06 <.003
APR 2001
25... <.005 <.04 <.06 <.021 .08 -- E.001 <.009 <.005 <.07 <.0866 <.06 <.003
MAY 2001
16... <.005 <.01 <.03 <.021 .10 -- <.002 <.009 <.005 <.03 <.0110 <.03 <.003
JUN 2001
13... <.005 <.01 <.0024 <.021 .05 -- <.002 <.009 <.005 <.03 E.0625 <.03 <.003
JUL 2001
19... <.005 <.01 <.03 <.021 .06 -- <.002 <.009 <.005 <.0030 E.0219 <.03 <.003
AUG 2001
22... <.005 <.01 <.03 <.021 .09 -- <.002 <.009 <.005 <.03 <.0110 <.03 <.003
HYDROXY IMID- LIN- METHIO- METH-
ATRA- IMAZ- IMAZE- ACLOP- LINURON URON MCPA, MCPB, METAL- CARB, OMYL
ZINE AQUIN THAPYR RID WATER, WATER MALA- WATER, WATER, AXYL WATER, OXIME
WATER WATER WATER WATER LINDANE FLTRD, FLTRD THION, FLTRD, FLTRD, WATER FLTRD, WATER
FLTRD FLTRD FLTRD FLTRD DIS- GF 0.7U 0.7 U DIS- GF 0.7U GF 0.7U FLTRD GF 0.7U FLTRD
DATE REC REC REC REC SOLVED REC GF, REC SOLVED REC REC REC REC 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)
(50355) (50356) (50407) (61695) (39341) (38478) (82666) (39532) (38482) (38487) (50359) (38501) (61696)
OCT 2000
10... -- -- -- -- <.004 <.33 <.035 <.027 <.08 <.13 -- <.18 --
NOV 2000
15... -- -- -- -- -- <.02 -- -- <.08 <.21 -- <.07 --
DEC 2000
11... -- -- -- -- <.004 <.02 <.035 <.027 <.08 <.13 -- <.21 --
JAN 2001
17... -- -- -- -- <.004 <.63 <.035 <.027 <.08 <.13 -- <.57 --
FEB 2001
13... -- -- -- -- <.004 <.10 <.035 <.027 <.08 <.13 -- <.07 --
MAR 2001
20... -- -- -- -- <.004 <.02 <.035 <.027 <.08 <.13 -- <.07 --
APR 2001
25... E.451 <.103 E.014 <.1060 <.004 <.07 <.035 <.027 E.01 <.06 <.057 <.08 <.0102
MAY 2001
16... E.418 <.016 <.017 <.0068 <.004 <.01 <.035 <.027 <.02 <.01 <.020 <.01 <.0110
JUN 2001
13... <.008 <.016 <.017 <.0068 <.004 <.01 <.035 <.027 <.02 <.01 <.020 <.01 <.0110
JUL 2001
19... E.285 <.016 <.017 <.0068 <.004 <.01 <.035 <.027 <.02 <.01 <.020 <.01 <.0110
AUG 2001
22... E.307 <.016 <.017 <.0068 <.004 <.01 <.035 <.027 <.02 <.01 E.013 <.01 <.0110
METH- METHYL METHYL MET- MOL- NAPROP- NEB- NORFLUR ORY-
OMYL, AZIN- PARA- METRI- SUL- INATE AMIDE URON, NICOSUL AZON, ZALIN, OXAMYL
WATER, PHOS THION METO- BUZIN FURON WATER WATER WATER, FURON WATER, WATER, OXIME
FLTRD, WAT FLT WAT FLT LACHLOR SENCOR METHYL FLTRD FLTRD FLTRD, WATER FLTRD, FLTRD, WATER
GF 0.7U 0.7 U 0.7 U WATER WATER WAT FLT 0.7 U 0.7 U GF 0.7U FLTRD GF 0.7U GF 0.7U FLTRD
DATE REC GF, REC GF, REC DISSOLV DISSOLV REC GF, REC GF, REC REC REC REC REC 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)
(49296) (82686) (82667) (39415) (82630) (61697) (82671) (82684) (49294) (50364) (49293) (49292) (50410)
OCT 2000
10... <.12 <.050 <.006 .051 <.006 -- <.002 <.007 <.02 -- <.04 <.28 --
NOV 2000
15... <.02 -- -- -- -- -- -- -- <.02 -- <.04 <.28 --
DEC 2000
11... <.87 <.050 <.006 .037 <.006 -- <.002 <.007 <.02 -- <.04 <.49 --
JAN 2001
17... <.96 <.050 <.006 .073 <.006 -- <.002 <.007 <.02 -- <.04 <.61 --
FEB 2001
13... <.80 <.050 <.006 .369 <.006 -- <.002 <.007 <.02 -- <.04 <.73 --
MAR 2001
20... <1.08 <.050 <.006 .186 <.006 -- <.002 <.007 <.02 -- <.04 <.95 --
APR 2001
25... <.08 <.050 <.006 .391 E.006 E.2275 <.002 <.007 <.07 <.065 <.08 <.07 <.064
MAY 2001
16... <.0044 <.050 <.006 .491 .013 <.0250 <.002 <.007 <.01 <.013 <.02 <.02 <.013
JUN 2001
13... <.0044 <.050 <.006 .727 .017 <.0250 E.001 <.007 <.01 <.013 <.02 <.02 <.013
JUL 2001
19... <.0044 <.050 <.006 .074 <.006 <.0250 <.002 <.007 <.01 <.013 <.02 <.02 <.013
AUG 2001
22... <.0044 <.050 <.006 .030 <.006 <.0250 <.002 <.007 <.01 <.013 <.02 <.02 <.013
PEB- PENDI- PER- PIC- PRON- PRO- PRO-
OXAMYL, ULATE METH- METHRIN PHORATE LORAM, PRO- AMIDE PROPA- PANIL PARGITE
WATER, PARA- WATER ALIN CIS WATER WATER, METON, WATER CHLOR, WATER WATER
FLTRD, P,P' THION, FILTRD WAT FLT WAT FLT FLTRD FLTRD, WATER, FLTRD WATER, FLTRD FLTRD
GF 0.7U DDE DIS- 0.7 U 0.7 U 0.7 U 0.7 U GF 0.7U DISS, 0.7 U DISS, 0.7 U 0.7 U
DATE REC DISSOLV SOLVED GF, REC GF, REC GF, REC GF, REC REC 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)
(38866) (34653) (39542) (82669) (82683) (82687) (82664) (49291) (04037) (82676) (04024) (82679) (82685)
OCT 2000
10... <.86 <.003 <.007 <.002 <.010 <.006 <.011 <.20 .020 <.004 <.010 <.011 <.023
NOV 2000
15... <.02 -- -- -- -- -- -- <.21 -- -- -- -- --
DEC 2000
11... <.75 <.003 <.007 <.002 <.010 <.006 <.011 <.09 E.012 <.004 <.010 <.011 <.023
JAN 2001
17... <.45 <.003 <.007 <.002 <.010 <.006 <.011 <.09 E.008 <.004 <.010 <.011 <.023
FEB 2001
13... <.20 E.002 <.007 <.002 <.010 <.006 <.011 <.09 E.006 <.004 <.010 <.011 <.023
MAR 2001
20... <.21 <.003 <.007 <.002 <.010 <.006 <.011 <.09 E.005 <.004 <.010 <.011 <.023
APR 2001
25... <.02 <.003 <.007 <.002 <.010 <.006 <.011 <.07 E.006 <.004 <.010 <.011 <.023
MAY 2001
16... <.01 <.003 <.007 <.002 <.010 <.006 <.011 <.02 .016 <.004 <.010 <.011 <.023
JUN 2001
13... <.01 <.003 <.007 <.002 <.010 <.006 <.011 <.02 E.011 <.004 <.010 <.011 <.023
JUL 2001
19... <.01 <.003 <.007 <.002 <.010 <.006 <.011 <.02 .024 <.004 <.010 <.011 <.023
AUG 2001
22... <.01 <.003 <.007 <.002 <.010 <.006 <.011 <.02 .038 <.004 <.010 <.011 <.023
PRO- PROP- PRO- SULFO- TEBU- TER- TER- TER- THIO-
PHAM, ICONA- POXUR, SI- MET- THIURON TER- BACIL BUFOS BUTHYL- BENCARB
WATER, ZOLE , WATER, SIDURON MAZINE, RURON WATER BACIL, WATER WATER AZINE, WATER
FLTRD, WATER FLTRD, WATER SILVEX, WATER, METHYL FLTRD WATER, FLTRD FLTRD WATER, FLTRD
GF 0.7U FLTRD GF 0.7U FLTRD DIS- DISS, WTR FLT 0.7 U DISS, 0.7 U 0.7 U DISS, 0.7 U
DATE REC REC REC REC SOLVED REC REC GF, REC REC GF, REC GF, REC 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)
(49236) (50471) (38538) (38548) (39762) (04035) (50337) (82670) (04032) (82665) (82675) (04022) (82681)
OCT 2000
10... <.68 -- <.68 -- <.03 .049 -- .021 -- <.034 <.017 -- <.005
NOV 2000
15... <.72 -- <.12 -- <.11 -- -- -- -- -- -- -- --
DEC 2000
11... <.51 -- <.91 -- <.03 .089 -- E.015 -- <.034 <.017 -- <.005
JAN 2001
17... <1.52 -- <.93 -- <.03 E.010 -- <.016 -- <.034 <.017 -- <.005
FEB 2001
13... <.60 -- <.75 -- <.13 .036 -- E.008 -- <.034 <.017 -- <.005
MAR 2001
20... <.61 -- <.79 -- <.03 .022 -- E.005 -- <.034 <.017 -- <.005
APR 2001
25... <.07 <.064 <.06 <.093 -- .042 E.007 E.007 <.10 <.034 <.017 -- <.005
MAY 2001
16... <.01 <.021 <.01 E.003 -- .083 E.011 E.010 <.01 <.034 <.017 -- <.005
JUN 2001
13... <.01 <.021 <.01 <.017 -- .058 <.009 E.011 <.01 <.034 <.017 E.004 <.005
JUL 2001
19... <.01 <.004 <.01 <.017 -- .030 <.009 E.011 <.01 <.034 <.017 E.018 <.005
AUG 2001
22... <.01 <.021 <.01 <.017 -- E.006 E.014 .026 <.01 <.034 <.017 -- <.005
TRIAL- TRI- TRI- UREA 3( SED.
LATE TRI- CLOPYR, FLUR- 4-CHLOR SUSP.
WATER BENURON WATER, ALIN OPHENYL SIEVE SEDI-
FLTRD METHYL FLTRD, WAT FLT METHYL DIAM. MENT,
0.7 U WATER GF 0.7U 0.7 U WAT FLT % FINER SUS-
DATE GF, REC FLTRD REC GF, REC REC THAN PENDED
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) .062 MM (MG/L)
(82678) (61159) (49235) (82661) (61692) (70331) (80154)
OCT 2000
10... <.002 -- <.07 <.009 -- 97 160
NOV 2000
15... -- -- <1.32 -- -- 98 228
DEC 2000
11... .025 -- <.56 <.009 -- 93 168
JAN 2001
17... .034 -- <.14 <.009 -- 72 127
FEB 2001
13... E.002 -- <.41 E.002 -- 95 315
MAR 2001
20... E.002 -- <.29 <.009 -- 95 165
APR 2001
25... E.002 <.07 E.01 <.009 <.0915 94 243
MAY 2001
16... .003 <.01 <.02 <.009 <.0242 98 135
JUN 2001
13... <.002 <.01 <.02 <.009 <.0242 89 366
JUL 2001
19... <.002 <.01 E.02 <.009 <.0242 100 126
AUG 2001
22... <.002 <.01 <.02 <.009 <.0242 97 139
<</td> Less than
> Greater than
E Estimated value
M Presence verified, not quantified


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data