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 1994-2000.
SURFACE-WATER QUALITY
 

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

SEDIMENT: Water years 1980-99.
 

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, September 1997, September 1998; fish, August 1998.

GAGE.-- U.S. Army Corps of Engineers water-stage recorder, satellite telemeter and rain gage. 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- OXYGEN, PH
AGENCY AGENCY CHARGE, DIS- WATER SPE-
ANA- COL- INST. SOLVED WHOLE CIFIC CALCIUM
LYZING LECTING CUBIC (PER- OXYGEN, FIELD CON- TEMPER- TEMPER- DIS-
SAMPLE SAMPLE GAGE FEET CENT DIS- (STAND- DUCT- ATURE ATURE SOLVED
DATE TIME (CODE (CODE HEIGHT PER SATUR- SOLVED ARD ANCE AIR WATER (MG/L
NUMBER) NUMBER) (FEET) SECOND ATION) (MG/L) UNITS) (US/CM) (DEG C) (DEG C) AS CA)
(00028) (00027) (00065) (00061) (00301) (00300) (00400) (00095) (00020) (00010) (00915)
OCT 1999
12... 1330 80020 81700 2.45 7560 100 9.5 8.0 742 26.0 17.5 55.2
NOV
16... 1400 80020 81700 1.93 5800 112 11.9 7.4 804 14.0 12.6 68.0
DEC
13... 1445 80020 81700 2.43 7500 107 13.2 7.7 828 6.0 6.2 65.4
JAN 2000
12... 1415 80020 81700 2.40 7400 91 12.0 7.5 723 12.0 3.9 72.0
FEB
08... 1435 80020 81700 1.99 6830 102 13.9 8.0 967 7.0 2.3 77.6
MAR
15... 1330 80020 81700 2.29 7030 95 10.4 8.0 1090 23.0 11.4 73.6
APR
11... 1510 80020 81700 2.17 6590 105 11.1 8.4 897 11.0 12.5 71.9
MAY
04... 1150 80020 81700 6.99 24600 94 8.5 8.1 777 25.0 19.2 65.5
JUN
09... 1910 80020 81700 7.56 25000 97 8.1 8.1 691 28.5 23.0 59.2
28... 1220 80020 81700 12.78 40800 70 5.8 7.7 542 23.5 23.9 52.7
AUG
11... 1200 80020 81700 4.66 15500 77 5.8 8.0 753 30.5 28.0 58.3
SEP
14... 1530 80020 81700 2.97 12500 83 6.6 7.9 786 24.5 25.7 57.6
ALKA- BICAR- CAR- NITRO- NITRO-
MAGNE- POTAS- LINITY BONATE BONATE CHLO- FLUO- SILICA, GEN,AM- GEN,AM-
SIUM, SIUM, SODIUM, WAT DIS WATER WATER RIDE, RIDE, DIS- SULFATE MONIA + MONIA +
DIS- DIS- DIS- TOT IT DIS IT DIS IT DIS- DIS- SOLVED DIS- ORGANIC ORGANIC
SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED SOLVED (MG/L SOLVED DIS. TOTAL
DATE (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L AS (MG/L (MG/L (MG/L
AS MG) AS K) AS NA) CACO3 HCO3 CO3 AS CL) AS F) SIO2) AS SO4) AS N) AS N)
(00925) (00935) (00930) (39086) (00453) (00452) (00940) (00950) (00955) (00945) (00623) (00625)
OCT 1999
12... 25.1 6.0 61.5 178 218 -- 84.5 .5 4.4 85.7 .41 1.2  
NOV
16... 29.6 5.1 59.0 209 255 -- 85.5 .5 3.9 85.1 .52 1.1  
DEC
13... 29.2 6.5 65.3 198 231 5 88.5 .5 3.3 94.3 .60 1.5  
JAN 2000
12... 29.6 5.2 53.0 209 255 -- 74.9 .5 5.2 88.5 .51 .97
FEB
08... 33.4 6.6 79.7 223 273 -- 119    .5 4.1 104    .55 .99
MAR
15... 31.3 4.8 104    205 247 1 176    .3 3.9 84.0 --      .99
APR
11... 31.1 4.9 67.8 213 239 8 112    .6 1.1 95.7 .49 1.2  
MAY
04... 28.6 4.0 52.0 186 227 -- 89.1 .3 5.4 68.3 .55 1.3  
JUN
09... 26.0 3.2 31.3 177 216 -- 58.7 .3 6.1 57.4 .50 1.3  
28... 22.3 3.6 18.5 164 200 -- 32.3 .3 9.3 39.0 .60 1.4  
AUG
11... 25.9 4.1 46.9 185 226 -- 73.1 .4 3.2 72.6 .54 1.3  
SEP
14... 27.1 5.2 56.0 188 229 -- 86.7 .5 5.8 76.5 .45 .96
NITRO- NITRO- NITRO- PHOS- CARBON, SOLIDS,
GEN, GEN, GEN, PHOS- PHORUS CARBON, ORGANIC RESIDUE MANGA-
AMMONIA NO2+NO3 NITRITE PHORUS ORTHO, PHOS- ORGANIC PARTIC- AT 180 IRON, NESE,
DIS- DIS- DIS- DIS- DIS- PHORUS DIS- ULATE DEG. C DIS- DIS-
SOLVED SOLVED SOLVED SOLVED SOLVED TOTAL SOLVED TOTAL DIS- SOLVED SOLVED
DATE (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L SOLVED (UG/L (UG/L
AS N) AS N) AS N) AS P) AS P) AS P) AS C) AS C) (MG/L) AS FE) AS MN)
(00608) (00631) (00613) (00666) (00671) (00665) (00681) (00689) (70300) (01046) (01056)
OCT 1999
12... .066 3.02 .032 .435 .431 .670 4.8 2.0 454 <10 E2
NOV
16... <.020 2.15 .015 .283 .240 .393 4.7 2.6 493 <10 E2
DEC
13... .063 3.54 .033 .667 .605 .968 5.1 2.6 506 <10 <2
JAN 2000
12... .111 2.98 .041 .339 .308 .504 4.4 1.7 488 <10 4
FEB
08... .090 4.46 .078 .487 .431 .662 5.0 2.0 602 E10 19
MAR
15... --        --      --        --        --        .377 4.7 2.1 652 <10 3
APR
11... .029 3.13 .038 .254 .211 .430 5.2 1.5 555 <10 <2
MAY
04... .035 5.86 .047 .175 .151 .482 5.3 >5.0 493 <10 <2
JUN
09... <.020 7.27 .035 .225 .189 .548 5.1 5.2 415 <10 <2
28... <.020 5.79 .062 .195 .171 .488 5.2 .9 316 <10 E1
AUG
11... .033 2.40 .065 .315 .265 .555 5.8 4.3 435 <10 E1
SEP
14... <.020 1.59 .054 .333 .317 .556 5.1 1.4 455 <10 <2
2,6-DI- 3HYDRXY ACIFL- ALDI- ALDICA- ALDI-
2,4-DB ETHYL CARBO- ACETO- UORFEN ALA- CARB RB SUL- CARB,
WATER, ANILINE FURAN CHLOR, WATER, CHLOR, SULFONE FOXIDE, WATER,
2,4,5-T 2,4-D, FLTRD, WAT FLT WAT,FLT WATER FLTRD, WATER, WAT,FLT WAT,FLT FLTRD,
DIS- DIS- GF 0.7U 0.7 U GF 0.7U FLTRD GF 0.7U DISS, GF 0.7U GF 0.7U GF 0.7U
DATE SOLVED SOLVED REC GF, REC REC 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)
(39742) (39732) (38746) (82660) (49308) (49260) (49315) (46342) (49313) (49314) (49312)
OCT 1999
12... <.04 <.11 <.10 <.003 <.11 .044 <.09 <.002 <.10 <.02 <.23
NOV
16... <.04 <.29 <.10 <.003 <.30 <.002 <.09 <.002 <.10 <.02 <1.00
DEC
13... <.04 <.59 <.10 <.003 <1.71 .141 <.09 <.002 <.10 <.18 <.21
JAN 2000
12... <.04 <.11 <.22 <.003 <.11 .059 <.09 .010 <.10 <.02 <.21
FEB
08... <.04 <.58 <.10 <.003 <1.69 <.010 <.09 <.002 <.10 <.64 <.62
MAR
15... <.04 <.40 <.12 <.003 <.12 .020 <.09 <.002 <.15 <.31 <.21
APR
11... <.14 <.22 <.19 <.003 <.11 .060 <.09 .014 <.10 <.11 <.21
MAY
04... <.04 <.11 <.10 <.003 <.11 .282 <.09 .015 <.10 <.16 <.67
JUN
09... <.04 <.21 <.10 <.003 <.32 .475 <.09 .017 <.10 <.02 <.21
28... <.04 <.11 <.10 <.003 <.32 .136 E.07 .015 <.10 <.40 <.21
AUG
11... <.04 <.22 <.10 <.003 <.16 .025 <.09 <.002 <.10 <.15 <.45
SEP
14... <.04 <.11 <.22 <.003 <.51 .020 <.09 <.002 <.61 <.39 <.21
BEN- BENTA- BRO- CAR- CAR- CARBO- CARBO-
ATRA- FLUR- ZON, BRO- MOXYNIL BUTYL- BARYL, BARYL FURAN, FURAN
ALPHA ZINE, ALIN WATER, MACIL, WATER, ATE, WATER, WATER WATER, WATER
BHC WATER, WAT FLD FLTRD, WATER, FLTRD, WATER, FLTRD, FLTRD FLTRD, FLTRD
DIS- DISS, 0.7 U GF 0.7U DISS, GF 0.7U DISS, GF 0.7U 0.7 U GF 0.7U 0.7 U
DATE SOLVED REC GF, REC REC REC REC REC 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)
(34253) (39632) (82673) (38711) (04029) (49311) (04028) (49310) (82680) (49309) (82674)
OCT 1999
12... <.002 .305 <.002 <.04 <.28 <.04 <.002 <.07 <.003 <.29 <.003
NOV
16... <.002 .223 <.002 <.04 <.33 <.04 <.002 <.07 <.003 <.68 <.003
DEC
13... <.002 .630 <.002 <.04 <.06 <.13 <.002 <.07 <.003 <.53 <.003
JAN 2000
12... <.002 .518 <.002 <.04 <.11 <.04 <.002 <.07 <.003 <.29 <.003
FEB
08... <.002 .379 <.002 <.04 <.14 <.04 <.002 <.07 <.003 <.91 <.003
MAR
15... <.002 .162 <.002 <.04 <.15 <.04 <.002 <.07 <.003 <.29 <.003
APR
11... <.002 .476 <.002 <.12 <.88 <.04 <.002 <.07 <.003 <.29 <.003
MAY
04... <.002 1.38   <.002 <.09 <.21 <.04 <.010 <.07 <.003 <.29 <.003
JUN
09... <.002 3.05   <.002 .40 <1.00 <.04 <.002 <.07 <.003 <.29 E.019
28... <.002 1.62   <.002 .17 <.67 <.04 <.010 <.07 E.005 <.29 <.010
AUG
11... <.002 .256 <.002 <.04 <.27 <.04 <.002 <.07 <.003 <.29 <.003
SEP
14... <.002 .264 <.002 <.04 <.61 <.04 <.002 <.07 <.003 <1.32 <.003
CHLORO- CLOPYR- DACTHAL DEETHYL DICHLO- DICHLOR
THALO- ALID, CYANA- MONO- DCPA ATRA- DICAMBA BENIL, PROP,
NIL, CHLOR- WATER, ZINE, ACID, WATER ZINE, DI- WATER, WATER, WATER,
WAT,FLT PYRIFOS FLTRD, WATER, WAT,FLT FLTRD WATER, AZINON, FLTRD, FLTRD, FLTRD,
GF 0.7U DIS- GF 0.7U DISS, GF 0.7U 0.7 U DISS, DIS- GF 0.7U GF 0.7U GF 0.7U
DATE REC SOLVED REC REC REC GF, 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)
(49306) (38933) (49305) (04041) (49304) (82682) (04040) (39572) (38442) (49303) (49302)
OCT 1999
12... <.48 <.004 <.23 <.010 <.04 <.002 E.028 .021 <.04 <.07 <.03
NOV
16... <.48 <.004 <.23 <.004 <.04 <.002 E.026 .024 <.04 <.07 <.03
DEC
13... <.48 <.004 <.23 .010 <.04 <.002 E.042 .029 <.04 <.07 <.03
JAN 2000
12... <.48 <.004 <.23 .009 <.04 <.002 E.018 .028 <.04 <.07 <.03
FEB
08... <.48 <.004 <.23 .011 <.04 <.002 E.030 .036 <.04 <.07 <.03
MAR
15... <.48 <.004 <.23 <.010 <.04 <.002 E.036 .035 <.04 <.07 <.03
APR
11... <.48 <.004 <.23 .010 <.11 <.002 E.044 .013 <.13 <.07 <.03
MAY
04... <.48 <.004 <.23 .015 <.04 <.002 E.092 .038 <.04 <.07 <.03
JUN
09... <.48 <.004 <.23 .039 <.04 <.002 E.31   .022 .12 <.07 <.03
28... <.48 <.004 <.23 .023 <.04 <.002 E.41   .011 <.04 <.07 <.03
AUG
11... <.48 <.004 <.23 .009 <.04 <.002 E.065 .015 <.04 <.07 <.03
SEP
14... <.48 <.004 <.23 .008 <.04 <.002 E.043 .014 <.10 <.07 <.03
DISUL- ETHAL- ETHO- FEN- FLUO-
DINOSEB FOTON DIURON, EPTC FLUR- PROP URON, METURON
DI- WATER, WATER WATER, DNOC WATER ALIN WATER WATER, WATER, FONOFOS
ELDRIN FLTRD, FLTRD FLTRD, WAT,FLT FLTRD WAT FLT FLTRD FLTRD, FLTRD, WATER
DIS- GF 0.7U 0.7 U GF 0.7U GF 0.7U 0.7 U 0.7 U 0.7 U GF 0.7U GF 0.7U DISS
DATE SOLVED REC GF, REC REC REC GF, REC GF, REC GF, 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)
(39381) (49301) (82677) (49300) (49299) (82668) (82663) (82672) (49297) (38811) (04095)
OCT 1999
12... <.001 <.06 <.017 .09 <.42 <.002 <.004 <.003 <.07 <.06 <.003
NOV
16... <.001 <.06 <.017 <.06 <.42 <.002 <.004 <.003 <.07 <.06 <.003
DEC
13... <.001 <.06 <.017 <.06 <.42 <.002 <.004 <.003 <.95 <.19 <.003
JAN 2000
12... <.001 <.06 <.017 <.06 <.42 <.002 <.004 <.003 <.07 <.06 <.003
FEB
08... <.001 <.06 <.017 <.25 <.42 <.002 <.004 <.003 <.07 <.06 <.003
MAR
15... <.001 <.06 <.017 <.06 <.42 <.002 <.004 <.003 <.07 <.06 <.003
APR
11... <.001 <.06 <.017 <.06 <.42 <.002 <.004 <.003 <.07 <.06 <.003
MAY
04... <.001 <.06 <.017 .23 <.42 <.002 <.004 <.003 <.07 <.06 <.003
JUN
09... <.001 <.06 <.017 .16 <.42 <.002 <.004 <.003 <.07 <.06 <.003
28... <.001 <.06 <.017 .06 <.42 <.002 <.004 <.003 <.07 <.06 <.003
AUG
11... <.001 <.06 <.017 E.05 <.42 <.002 <.004 <.003 <.13 <.06 <.003
SEP
14... <.001 <.06 <.017 .12 <.42 <.002 <.004 <.003 <.17 <.06 <.003
LIN- METHIO- METH- METHYL METHYL
LINURON URON MCPA, MCPB, CARB, OMYL, AZIN- PARA-
WATER, WATER MALA- WATER, WATER, WATER, WATER, PHOS THION METO-
LINDANE FLTRD, FLTRD THION, FLTRD, FLTRD, FLTRD, FLTRD, WAT FLT WAT FLT LACHLOR
DIS- GF 0.7U 0.7 U DIS- GF 0.7U GF 0.7U GF 0.7U GF 0.7U 0.7 U 0.7 U WATER
DATE SOLVED REC GF, REC SOLVED REC REC REC REC GF, REC GF, REC DISSOLV
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(39341) (38478) (82666) (39532) (38482) (38487) (38501) (49296) (82686) (82667) (39415)
OCT 1999
12... <.004 <.09 <.002 <.005 <.17 <.13 <.03 <2.92 <.001 <.006 .087
NOV
16... <.004 <.09 <.002 <.005 <.17 <.31 <.03 <2.67 <.001 <.006 .049
DEC
13... <.004 <.09 <.002 <.005 <.17 <.20 <.42 <.87 <.001 <.006 .235
JAN 2000
12... <.004 <.09 <.002 <.005 <.17 <.13 <.12 <.02 <.001 <.006 .289
FEB
08... <.004 <.09 <.002 <.005 <.17 <.24 <.50 <.78 <.001 <.006 .200
MAR
15... <.004 <.09 <.002 <.005 <.17 <.21 <.03 <.02 <.001 <.006 .066
APR
11... <.004 <.09 <.002 <.005 <.17 <.13 <.03 <.14 <.001 <.006 .200
MAY
04... <.004 <.09 <.002 <.005 <.17 <.13 <.03 <.90 <.001 <.006 .472
JUN
09... <.004 <.09 <.002 <.005 <.17 <.13 <.03 <.72 <.001 <.006 .572
28... <.004 <.09 <.002 <.005 <.17 <.13 <.03 <.71 <.001 <.006 .392
AUG
11... <.004 <.09 <.002 <.005 <.17 <.13 <.12 <1.50 <.001 <.006 .051
SEP
14... <.004 <.09 <.002 <.005 <.17 <.36 <.39 <.31 <.001 <.006 .020
MOL- NAPROP- NEB- NORFLUR ORY- PEB- PENDI-
METRI- INATE AMIDE URON, AZON, ZALIN, OXAMYL, ULATE METH-
BUZIN WATER WATER WATER, WATER, WATER, WATER, PARA- WATER ALIN
SENCOR FLTRD FLTRD FLTRD, FLTRD, FLTRD, FLTRD, P,P' THION, FILTRD WAT FLT
WATER 0.7 U 0.7 U GF 0.7U GF 0.7U GF 0.7U GF 0.7U DDE DIS- 0.7 U 0.7 U
DATE DISSOLV GF, REC GF, REC REC REC REC REC DISSOLV 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)
(82630) (82671) (82684) (49294) (49293) (49292) (38866) (34653) (39542) (82669) (82683)
OCT 1999
12... <.004 <.004 <.003 <.11 <.04 <.31 <.02 <.006 <.004 <.004 <.004
NOV
16... <.004 <.004 <.003 <.07 <.04 <.31 <.17 <.006 <.004 <.004 <.004
DEC
13... <.004 <.004 <.003 <.07 <.04 <.31 <.02 <.006 <.004 <.004 <.004
JAN 2000
12... <.004 <.004 <.003 <.07 <.04 <4.75 <.02 <.006 <.004 <.004 <.004
FEB
08... <.004 <.004 <.003 <.07 <.04 <.31 <.02 <.006 <.004 <.004 <.004
MAR
15... <.004 <.004 <.003 <.07 <.04 <.31 <.02 E.003 <.004 <.004 <.004
APR
11... <.004 <.004 <.003 <.07 <.04 <.31 <.02 <.006 <.004 <.004 <.004
MAY
04... <.020 <.004 <.003 <.07 <.04 <.31 <.02 <.006 <.004 <.004 <.004
JUN
09... .024 <.004 <.003 <.07 <.04 <.31 <.02 <.006 <.004 <.004 <.004
28... .010 <.004 <.003 <.07 <.04 <.31 <.11 <.006 <.004 <.004 <.004
AUG
11... <.004 <.004 <.003 <.07 <.04 <.31 <.22 <.006 <.004 <.004 <.004
SEP
14... <.004 <.004 <.003 <.07 <.04 <.38 <.02 <.006 <.004 <.004 <.004
PER- PIC- PRON- PRO- PRO- PRO- PRO-
METHRIN PHORATE LORAM, PRO- AMIDE PROPA- PANIL PARGITE PHAM, POXUR,
CIS WATER WATER, METON, WATER CHLOR, WATER WATER WATER, WATER,
WAT FLT FLTRD FLTRD, WATER, FLTRD WATER, FLTRD FLTRD FLTRD, FLTRD, SILVEX,
0.7 U 0.7 U GF 0.7U DISS, 0.7 U DISS, 0.7 U 0.7 U GF 0.7U GF 0.7U DIS-
DATE GF, REC GF, REC REC REC GF, REC REC GF, REC GF, REC REC REC SOLVED
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(82687) (82664) (49291) (04037) (82676) (04024) (82679) (82685) (49236) (38538) (39762)
OCT 1999
12... <.005 <.002 <.05 E.017 <.003 <.007 <.004 <.013 <.04 <.08 <.06
NOV
16... <.005 <.002 <.05 .018 <.003 <.007 <.004 <.013 <.04 <.08 <.11
DEC
13... <.005 <.002 <.05 E.014 <.003 <.007 <.004 <.013 <.04 <.08 <.06
JAN 2000
12... <.005 <.002 <.05 E.015 <.003 <.007 <.004 <.013 <.04 <.08 <.06
FEB
08... <.005 <.002 <.05 E.015 <.003 <.007 <.004 <.013 <.04 <.08 <.06
MAR
15... <.005 <.002 <.05 E.009 <.003 <.007 <.004 <.013 <.69 <.08 <.06
APR
11... <.005 <.002 <.05 E.012 <.003 <.007 <.004 <.013 <.16 <.08 <.06
MAY
04... <.005 <.002 <.05 .018 <.003 <.007 <.004 <.013 <4.20 <.08 <.06
JUN
09... <.005 <.002 <.14 .023 <.003 <.007 <.004 <.013 <10.0   <.08 <.06
28... <.005 <.002 <.14 E.018 <.003 <.007 <.004 <.013 <4.50 <.94 <.06
AUG
11... <.005 <.002 <.05 .025 <.003 <.007 <.004 <.013 <.04 <.08 <.06
SEP
14... <.005 <.002 <.15 .023 <.003 <.007 <.004 <.013 <1.25 <.61 <.06
TEBU- TER- TER- TER- THIO- TRIAL- TRI- TRI- SED.
SI- THIURON BACIL BUFOS BUTHYL- BENCARB LATE CLOPYR, FLUR- SUSP.
MAZINE, WATER WATER WATER AZINE, WATER WATER WATER, ALIN SEDI- SIEVE
WATER, FLTRD FLTRD FLTRD WATER, FLTRD FLTRD FLTRD, WAT FLT MENT, DIAM.
DISS, 0.7 U 0.7 U 0.7 U DISS, 0.7 U 0.7 U GF 0.7U 0.7 U SUS- % FINER
DATE REC GF, REC GF, REC GF, REC REC GF, REC GF, REC REC GF, REC PENDED THAN
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (MG/L) .062 MM
(04035) (82670) (82665) (82675) (04022) (82681) (82678) (49235) (82661) (80154) (70331)
OCT 1999
12... <.005 <.010 <.007 <.013 --        <.002 <.001 <.25 <.002 152 100
NOV
16... .045 <.010 <.007 <.013 --        <.002 <.001 <.25 <.002 84 98
DEC
13... .037 <.010 <.007 <.013 --        <.002 <.001 <.25 <.002 231 94
JAN 2000
12... .018 <.010 <.007 <.013 --        <.002 <.001 <.25 <.002 127 97
FEB
08... .011 <.010 <.007 <.013 --        <.002 <.001 <.25 <.002 160 98
MAR
15... .010 <.010 <.007 <.013 --        <.002 .008 <.25 <.002 144 96
APR
11... .009 <.010 <.007 <.013 --        <.002 .005 <.25 <.002 169 95
MAY
04... .036 E.010 <.007 <.013 --        <.002 .007 <.25 <.002 265 96
JUN
09... .030 .016 <.007 <.013 --        <.002 E.002 <.25 <.002 314 96
28... .025 .013 <.007 <.013 --        <.002 <.001 <.25 E.003 304 96
AUG
11... .010 .017 <.007 <.013 E.006 <.002 <.001 <.25 <.002 265 98
SEP
14... .012 .024 <.007 <.013 E.014 <.002 <.001 <.51 <.002 203 95


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data