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.--Water-quality records, water years 1975 to 1993, 1996 to current year.
WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DIS- PH OXYGEN,
AGENCY AGENCY CHARGE, NUMBER SPE- WATER DIS-
COL- ANA- INST. OF CIFIC WHOLE SOLVED
LECTING LYZING CUBIC SAM- TEMPER- CON- FIELD OXYGEN, (PER-
SAMPLE SAMPLE GAGE FEET STREAM PLING ATURE DUCT- (STAND- DIS- CENT
DATE TIME (CODE (CODE HEIGHT PER WIDTH POINTS WATER ANCE ARD SOLVED SATUR-
NUMBER) NUMBER) (FEET) SECOND (FT) (COUNT) (DEG C) (US/CM) UNITS) (MG/L) ATION)
(00027) (00028) (00065) (00061) (00004) (00063) (00010) (00095) (00400) (00300) (00301)
OCT 1997
21... 1310 81700 80020 2.00 6630 700 10 16.3 735 7.8 9.3 95
NOV
18... 1330 81700 80020 2.47 8280 660 10 5.1 776 7.7 12.5 98
DEC
16... 1320 81700 80020 3.22 10900 700 10 2.3 826 8.1 14.4 105
JAN 1998
13... 1450 81700 80020 10.25 39300 900 10 2.0 720 7.7 12.8 93
FEB
04... 1330 81700 80020 7.77 27300 800 10 3.5 762 8.0 12.7 96
MAR
10... 1530 81700 80020 12.08 39900 800 10 4.5 598 8.1 12.3 96
APR
01... 1600 81700 80020 18.43 69600 1000 10 13.6 594 7.8 8.8 85
14... 1250 81700 80020 17.83 59100 1200 10 13.3 610 7.9 9.4 90
28... 1220 81700 80020 14.55 46000 1000 10 15.2 699 8.3 10.3 102
MAY
12... 1250 81700 80020 17.46 69300 2000 10 19.6 574 8.0 8.6 94
27... 1240 81700 80020 16.98 61300 2000 10 21.4 519 7.5 5.9 67
JUN
09... 1830 81700 80020 10.39 32800 900 10 19.3 688 7.9 7.4 81
18... 1330 81700 80020 14.01 49800 900 10 22.8 491 7.5 6.7 78
23... 1350 81700 80020 17.80 63900 2000 10 24.7 491 7.5 6.0 72
JUL
07... 1250 81700 80020 14.98 50400 800 10 27.8 623 7.8 5.7 72
07... 1251 81700 9720 --      -- -- -- --    -- --    --    --
21... 1400 81700 80020 10.12 35400 800 10 30.1 574 7.7 5.2 69
21... 1401 81700 9720 --      -- -- -- --    -- --    --    --
AUG
04... 1510 81700 80020 3.05 9680 700 10 27.6 669 7.9 7.5 96
04... 1511 81700 9720 --      -- -- -- --    -- --    --    --
12... 1750 81700 80020 7.20 21500 800 10 28.4 630 7.7 4.9 63
18... 1230 81700 80020 3.82 12400 800 10 28.6 621 7.5 5.3 69
18... 1231 81700 9720 --      -- -- -- --    -- --    --    --
SEP
01... 1230 81700 80020 3.20 10200 760 10 27.0 659 7.9 5.4 68
01... 1231 81700 9720 --      -- -- -- --    -- --    --    --
15... 1230 81700 80020 2.17 6600 680 10 24.7 685 7.8 6.4 78
15... 1231 81700 9720 --      -- -- -- --    -- --    --    --

ALKA- CAR- BICAR- SOLIDS,
MAGNE- POTAS- LINITY BONATE BONATE CHLO- FLUO- SILICA, RESIDUE
CALCIUM SIUM, SODIUM, SIUM, WAT DIS WATER WATER RIDE, SULFATE RIDE, DIS- AT 180
DIS- DIS- DIS- DIS- TOT IT DIS IT DIS IT DIS- DIS- DIS- SOLVED DEG. C
SOLVED SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED SOLVED SOLVED (MG/L DIS-
DATE (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L (MG/L AS SOLVED
AS CA) AS MG) AS NA) AS K) CACO3 CO3 HCO3 AS CL) AS SO4) AS F) SIO2) (MG/L)
(00915) (00925) (00930) (00935) (39086) (00452) (00453) (00940) (00945) (00950) (00955) (70300)
OCT 1997
21... 63 25 51 5.2 192 0 234 78 81 .51 3.4 446
NOV
18... 66 27 54 4.8 196 0 239 77 82 .45 5.7 488
DEC
16... 73 30 56 4.4 200 0 244 85 81 .41 5.3 509
JAN 1998
13... 69 28 38 3.7 178 0 217 75 58 .30 8.4 430
FEB
04... 77 32 40 3.4 208 0 254 73 72 .30 8.2 478
MAR
10... 63 28 23 2.9 160 0 195 51 56 .23 6.6 374
APR
01... 58 24 27 3.0 158 0 193 52 46 .28 7.4 352
14... 63 26 24 2.8 176 0 215 45 54 .26 7.1 373
28... 75 30 29 2.7 212 10 239 57 65 .25 3.9 432
MAY
12... 57 25 19 3.2 178 0 217 36 48 .24 4.7 340
27... 53 22 15 3.3 156 0 190 29 41 .22 7.8 315
JUN
09... 68 30 28 3.3 212 0 259 46 60 .31 6.0 410
18... 50 22 15 3.9 142 0 173 27 37 .29 8.0 286
23... 48 21 13 3.6 144 0 176 24 35 .21 7.2 317
JUL
07... 64 26 21 3.5 202 0 246 39 50 .32 7.2 367
07... -- -- -- --    -- -- -- -- -- --      --    --
21... 58 26 21 3.5 176 0 215 35 45 .29 6.6 360
21... -- -- -- --    -- -- -- -- -- --      --    --
AUG
04... 63 29 30 3.5 210 0 256 46 57 .36 6.1 371
04... -- -- -- --    -- -- -- -- -- --      --    --
12... 52 22 39 4.4 154 0 188 53 61 .44 6.1 377
18... 54 23 33 4.7 170 0 207 51 58 .39 7.2 360
18... -- -- -- --    -- -- -- -- -- --      --    --
SEP
01... 57 26 38 4.4 182 0 222 58 63 .37 5.3 402
01... -- -- -- --    -- -- -- -- -- --      --    --
15... 54 25 46 5.0 172 0 210 69 68 .49 4.3 410
15... -- -- -- --    -- -- -- -- -- --      --    --

NITRO- NITRO- NITRO- NITRO- NITRO- PHOS- CARBON,
GEN, GEN, GEN,AM- GEN,AM- GEN, PHOS- PHORUS MANGA- CARBON, ORGANIC
AMMONIA NITRITE MONIA + MONIA + NO2+NO3 PHOS- PHORUS ORTHO, IRON, NESE, ORGANIC SUS-
DIS- DIS- ORGANIC ORGANIC DIS- PHORUS DIS- DIS- DIS- DIS- DIS- PENDED
SOLVED SOLVED DIS. TOTAL SOLVED TOTAL SOLVED SOLVED SOLVED SOLVED SOLVED TOTAL
DATE (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L (UG/L (MG/L (MG/L
AS N) AS N) AS N) AS N) AS N) AS P) AS P) AS P) AS FE) AS MN) AS C) AS C)
(00608) (00613) (00623) (00625) (00631) (00665) (00666) (00671) (01046) (01056) (00681) (00689)
OCT 1997
21... .137 .061 .55 1.2   1.93 .453 .274 .225 <3.0 3.5 4.4 1.8  
NOV
18... .187 .047 .62 .86 4.05 .435 .395 .341 <3.0 2.5 4.3 1.6  
DEC
16... <.020 .097 .56 .69 3.82 .436 .383 .291 <10    <4.0 4.3 1.7  
JAN 1998
13... .137 .064 .46 1.2   7.17 .437 .171 .228 11    7.9 4.5 2.4  
FEB
04... .114 .037 .58 .78 5.64 .236 .133 .148 <10    5.6 3.8 1.6  
MAR
10... .064 .022 .44 1.3   6.48 .491 .139 .130 <10    <4.0 4.5 4.8  
APR
01... .099 .056 .60 .92 6.72 .241 .152 .148 <10    <4.0 4.1 1.1  
14... .046 .070 .41 1.0   6.52 .297 .135 .107 <10    <4.0 4.2 3.1  
28... .030 .036 .35 .87 6.08 .194 .068 .075 <10    <4.0 4.0 1.0  
MAY
12... .032 .085 .44 .65 5.89 .121 .087 .082 <10    <4.0 4.2 1.5  
27... .046 .131 .45 .70 5.27 .206 .138 .125 <10    <4.0 4.4 2.2  
JUN
09... .107 .076 .48 2.0   5.09 .743 .110 .139 <10    <4.0 3.7 4.1  
18... <.020 .088 .50 1.1   6.76 .437 .157 .148 <10    <4.0 4.3 3.7  
23... .034 .096 .46 1.0   6.28 .299 .136 .125 <10    <4.0 4.0 --     
JUL
07... .068 .078 .64 .77 4.94 .299 .133 .108 <10    <4.0 3.7 2.0  
07... --        --        --      --      --      --        --        --        --    --    --    --     
21... .021 .128 .46 3.0   3.54 1.35   .161 .135 <10    <4.0 3.9 4.4  
21... --        --        --      --      --      --        --        --        --    --    --    --     
AUG
04... .039 .189 .45 .86 2.46 .293 .196 .179 <10    <4.0 3.9 1.8  
04... --        --        --      --      --      --        --        --        --    --    --    --     
12... .089 .056 .35 1.3   2.89 .641 .313 .316 <10    <4.0 4.5 .50
18... .064 .100 .43 .95 2.19 .383 .242 .241 <10    <4.0 4.4 2.2  
18... --        --        --      --      --      --        --        --        --    --    --    --     
SEP
01... .020 .198 .48 1.0   1.89 .461 .264 .240 <10    <4.0 5.0 2.4  
01... --        --        --      --      --      --        --        --        --    --    --    --     
15... .155 .116 .57 .87 1.79 .336 .237 .220 <10    <4.0 4.7 1.3  
15... --        --        --      --      --      --        --        --        --    --    --    --     

2,6-DI- DEETHYL ACIFL- ALDI- ALDI- ALDICA- METHYL
ACETO- ALA- ETHYL ATRA- ATRA- UORFEN CARB, CARB RB SUL- AZIN-
CHLOR, CHLOR, ANILINE ZINE, ZINE, WATER, WATER, SULFONE FOXIDE, ALPHA PHOS
WATER WATER, WAT FLT WATER, WATER, FLTRD, FLTRD, WAT,FLT WAT,FLT BHC WAT FLT
FLTRD DISS, 0.7 U DISS, DISS, GF 0.7U GF 0.7U GF 0.7U GF 0.7U DIS- 0.7 U
DATE REC REC, GF, REC REC REC REC REC REC REC SOLVED GF, REC
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(49260) (46342) (82660) (39632) (04040) (49315) (49312) (49313) (49314) (34253) (82686)
OCT 1997
21... <.0020 E.003 <.0030 .126 E.0136 <.0350 <.0160 <.0160 <.0210 <.0020 <.0700
NOV
18... <.0100 .010 <.0030 .223 E.0351 <.0350 <.550   <.100   <.0210 <.0020 <.0010
DEC
16... <.0020 <.002 <.0030 .199 E.0413 <.0350 <.550   <.100   <.0210 <.0020 <.0010
JAN 1998
13... .0164 .008 <.0030 .175 E.0650 <.0350 <.550   <.100   <.0210 <.0020 <.0010
FEB
04... .0105 E.004 <.0030 .129 E.0514 <.0350 <.550   <.100   <.0210 <.0020 <.0010
MAR
10... .0068 .006 <.0030 .099 E.0446 <.0350 <.550   <.100   <.0210 <.0020 <.300  
APR
01... .0908 <.020 E.0040 .150 E.0117 <.0350 <.550   <.100   <.0210 <.0300 <.100  
14... .0789 .012 <.0030 .180 E.0330 <.0350 <.550   <.100   <.0210 <.0020 <.0010
28... .0504 .008 <.0030 .160 E.0308 <.0350 <.550   <.100   <.0210 <.0020 <.0010
MAY
12... 1.71     .044 <.0030 4.06   E.177   <.0350 <.550   <.100   <.0210 <.0020 <.0010
27... 1.93     .064 <.0030 7.47   E.398   --          --          --          --          <.0020 <.0010
JUN
09... .362   .015 <.0030 2.86   E.192   <.0350 <.550   <.100   <.0210 <.0020 <.0010
18... 1.16     .063 <.0030 8.18   E.828   <.0350 <.550   <.100   <.0210 <.0020 <.0010
23... .854   .055 <.0030 6.47   E.663   .0400 <.550   <.100   <.0210 <.0020 <.0010
JUL
07... .217   .016 <.0030 3.10   E.299   <.0350 <.550   <.100   <.0210 <.0020 <.0010
07... .130   <.050 --          2.43   .440   --          --          --          --          --          --         
21... .0746 <.002 <.0030 1.08   E.179   <.0350 <.550   <.100   <.0210 <.0020 <.0010
21... .0600 <.050 --          1.38   .430   --          --          --          --          --          --         
AUG
04... .0149 <.002 <.0030 .804 E.173   <.0350 <.550   <.100   <.0210 <.0020 <.0010
04... <.0500 <.050 --          .710 .220   --          --          --          --          --          --         
12... .0199 <.002 <.0030 .326 E.0806 <.0350 <.550   <.100   <.0210 <.0020 <.0010
18... .0145 <.002 <.0030 .281 E.0722 <.0350 <.550   <.100   <.0210 <.0020 <.0010
18... <.0500 <.050 --          .360 .140   --          --          --          --          --          --         
SEP
01... .0134 .007 <.0030 .239 E.0741 <.0350 <.550   <.100   <.0210 <.0020 <.0010
01... <.0500 <.050 --          .290 .110   --          --          --          --          --          --         
15... <.0020 <.002 <.0030 .134 E.0318 <.0350 <.550   <.100   <.0210 <.0020 <.0010
15... <.0500 <.050 --          .140 .0500 --          --          --          --          --          --         

BEN- BENTA- BRO- CAR- CAR- CARBO- CARBO- 3HYDRXY CHLOR-
FLUR- ZON, BRO- MOXYNIL BUTYL- BARYL BARYL, FURAN FURAN, CARBO- AMBEN,
ALIN WATER, MACIL, WATER, ATE, WATER WATER, WATER WATER, FURAN WATER,
WAT FLD FLTRD, WATER, FLTRD, WATER, FLTRD FLTRD, FLTRD FLTRD, WAT,FLT FLTRD,
0.7 U GF 0.7U DISS, GF 0.7U DISS, 0.7 U GF 0.7U 0.7 U GF 0.7U GF 0.7U GF 0.7U
DATE GF, REC REC REC REC REC GF, REC 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)
(82673) (38711) (04029) (49311) (04028) (82680) (49310) (82674) (49309) (49308) (49307)
OCT 1997
21... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.0280 <.0140 <.0110
NOV
18... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
DEC
16... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
JAN 1998
13... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
FEB
04... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
MAR
10... <.0020 .0500 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
APR
01... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
14... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
28... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
MAY
12... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
27... <.0020 --          --          --          <.0020 <.0030 --          <.0030 --          --          --         
JUN
09... <.0020 .0600 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
18... <.0020 .510   <.370   <.0350 <.0020 <.0030 <.0080 E.0872 <.120   <.0140 <.420  
23... <.0020 .400   <.0350 <.0350 <.0020 <.0030 <.0080 E.0729 <.120   <.0140 <.420  
JUL
07... <.0020 E.240   <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <3.02    
07... --          --          --          --          --          --          --          --          --          --          --         
21... <.0020 .280   <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.870   <.0140 <.420  
21... --          --          --          --          --          --          --          --          --          --          --         
AUG
04... <.0020 .140   <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
04... --          --          --          --          --          --          --          --          --          --          --         
12... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
18... <.0020 <.0140 <.230   <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
18... --          --          --          --          --          --          --          --          --          --          --         
SEP
01... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
01... --          --          --          --          --          --          --          --          --          --          --         
15... <.0020 <.0140 <.0350 <.0350 <.0020 <.0030 <.0080 <.0030 <.120   <.0140 <.420  
15... --          --          --          --          --          --          --          --          --          --          --         

CHLORO- CLOPYR- DACTHAL DICHLO- DICHLOR
THALO- ALID, CYANA- MONO- DCPA DICAMBA BENIL, PROP,
NIL, CHLOR- WATER, ZINE, ACID, WATER DI- WATER, WATER, WATER,
WAT,FLT PYRIFOS FLTRD, WATER, WAT,FLT FLTRD P,P' AZINON, FLTRD, FLTRD, FLTRD,
GF 0.7U DIS- GF 0.7U DISS, GF 0.7U 0.7 U DDE DIS- GF 0.7U GF 0.7U GF 0.7U
DATE REC SOLVED REC REC REC GF, REC DISSOLV 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) (34653) (39572) (38442) (49303) (49302)
OCT 1997
21... <.0350 <.0040 <.0500 .0192 <.0170 <.0020 <.0060 .015 <.0350 <.0200 <.0320
NOV
18... <.480   <.0040 <.230   .0355 <.0170 <.0020 <.0060 .034 <.0350 <1.20     <.0320
DEC
16... <.480   <.0040 <.230   .0557 <.0170 <.0020 <.0060 .025 <.0350 <1.20     <.0320
JAN 1998
13... <.480   <.0040 <.230   .0260 <.0170 <.0020 <.0060 .010 <.0350 <1.20     <.0320
FEB
04... <.480   <.0040 <.230   .0311 <.0170 <.0020 <.0060 .007 <.0350 <1.20     <.0320
MAR
10... <.480   <.0040 <.230   .0429 <.0170 <.0020 <.0060 .005 <.0350 <1.20     <.0320
APR
01... <.480   <.0200 <.230   <.0040 <.0170 <.0020 <.0060 <.010 <.0350 <1.20     <.0320
14... <.480   <.0040 <.230   .0512 <.0170 <.0020 <.0060 .007 <.0350 <1.20     <.0320
28... <.480   <.0040 <.230   .0245 <.0170 <.0020 <.0060 .016 <.0350 <1.20     <.0320
MAY
12... <.480   <.0600 <.230   1.56     <.0170 <.0020 <.0060 .010 <.0350 <1.20     <.0320
27... --          <.0900 --          2.31     --          <.0020 <.0060 .007 --          --          --         
JUN
09... <.480   <.0300 <.230   .853   <.0170 <.0020 <.0060 .016 <.0350 <1.20     <.0320
18... <.480   <.0600 <.230   1.70     <.0170 <.0020 <.0060 <.002 <.0350 <1.20     <.0320
23... <.480   <.0500 <.230   1.27     <.0170 <.0020 <.0060 <.002 <.0350 <1.20     <.0320
JUL
07... <.480   <.0040 <.230   .708   <.0170 <.0020 <.0060 .008 <.0350 <1.20     <.0320
07... --          --          --          <.0500 --          --          --          --        --          --          --         
21... <.480   <.0040 <.230   .264   <.0170 <.0020 <.0060 <.002 <.0350 <1.20     <.0320
21... --          --          --          .320   --          --          --          --        --          --          --         
AUG
04... <.480   <.0040 <.230   .289   <.0170 <.0020 <.0060 <.002 <.0350 <1.20     <.0320
04... --          --          --          .180   --          --          --          --        --          --          --         
12... <.480   <.0040 <.230   .106   <.0170 <.0020 <.0060 .071 <.0350 <1.20     <.0320
18... <.480   <.0040 <.230   .0802 <.0170 <.0020 <.0060 .049 <.0350 <1.20     <.0320
18... --          --          --          .0500 --          --          --          --        --          --          --         
SEP
01... <.480   <.0040 <.230   .0501 <.0170 <.0020 <.0060 .013 <.0350 <1.20     <.0320
01... --          --          --          <.0500 --          --          --          --        --          --          --         
15... <.480   <.0040 <.230   .0194 <.0170 <.0020 <.0060 .014 <.0350 <1.20     <.0320
15... --          --          --          <.0500 --          --          --          --        --          --          --         

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 1997
21... <.001 <.0350 <.0170 <.0200 <.0350 <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
NOV
18... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
DEC
16... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
JAN 1998
13... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
FEB
04... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
MAR
10... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
APR
01... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
14... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
28... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
MAY
12... <.001 <.0350 <.0170 .0600 <.420   .0115 <.0040 <.0030 <.0130 <.0350 <.0030
27... <.001 --          <.0170 --          --          .0044 <.0040 <.0030 --          --          <.0030
JUN
09... <.001 <.0350 <.0170 E.0300 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
18... <.001 <.0350 <.0170 .0500 <.420   E.0018 <.0040 <.0030 <.0130 <.0350 <.0030
23... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
JUL
07... <.001 <.0350 <.0170 .100   <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
07... --        --          --          --          --          --          --          --          --          --          --         
21... <.001 <.0350 <.0170 .0600 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
21... --        --          --          --          --          --          --          --          --          --          --         
AUG
04... <.001 <.0350 <.0170 .0800 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
04... --        --          --          --          --          --          --          --          --          --          --         
12... <.001 <.0350 <.0170 .0600 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
18... <.001 <.0350 <.0170 .150   <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
18... --        --          --          --          --          --          --          --          --          --          --         
SEP
01... <.001 <.0350 <.0170 .0500 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
01... --        --          --          --          --          --          --          --          --          --          --         
15... <.001 <.0350 <.0170 <.0200 <.420   <.0020 <.0040 <.0030 <.0130 <.0350 <.0030
15... --        --          --          --          --          --          --          --          --          --          --         

LIN- METHIO- METH- MOL-
URON LINURON MCPB, MCPA, CARB, OMYL, METRI- INATE
WATER WATER, MALA- WATER, WATER, WATER, WATER, METO- BUZIN WATER
LINDANE FLTRD FLTRD, THION, FLTRD, FLTRD, FLTRD, FLTRD, LACHLOR SENCOR FLTRD
DIS- 0.7 U GF 0.7U DIS- GF 0.7U GF 0.7U GF 0.7U GF 0.7U WATER WATER 0.7 U
DATE SOLVED GF, REC REC SOLVED REC REC REC REC DISSOLV DISSOLV GF, REC
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(39341) (82666) (38478) (39532) (38487) (38482) (38501) (49296) (39415) (82630) (82671)
OCT 1997
21... <.004 <.0020 <.0180 <.005 <.0350 <.0500 <.0260 <.0170 .043 <.004 <.0040
NOV
18... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .117 <.004 <.0040
DEC
16... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .153 <.004 <.0040
JAN 1998
13... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .388 <.004 <.0040
FEB
04... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .146 <.004 <.0040
MAR
10... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .104 <.004 <.0040
APR
01... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .185 <.004 <.0040
14... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .205 <.004 <.0040
28... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .142 <.004 <.0040
MAY
12... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <13.4       3.20   <.030 <.0040
27... <.004 <.0020 --          <.005 --          --          --          --          2.35   .043 <.0040
JUN
09... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 1.09   .021 <.0040
18... <.004 <.0020 <.0180 .009 <.140   <.170   <.0260 <.0170 2.13   .061 <.0040
23... <.004 <.0020 <.0180 <.020 <.140   <.170   <.0260 <7.51     1.99   .037 <.0040
JUL
07... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <6.64     .788 <.010 <.0040
07... --        --          --          --        --          --          --          --          .600 <.050 --         
21... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .350 <.004 <.0040
21... --        --          --          --        --          --          --          --          .360 <.050 --         
AUG
04... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .140 <.004 <.0040
04... --        --          --          --        --          --          --          --          .100 <.050 --         
12... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .112 <.004 <.0040
18... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .084 <.004 <.0040
18... --        --          --          --        --          --          --          --          .070 <.050 --         
SEP
01... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .071 <.004 <.0040
01... --        --          --          --        --          --          --          --          .070 <.050 --         
15... <.004 <.0020 <.0180 <.005 <.140   <.170   <.0260 <.0170 .026 <.004 <.0040
15... --        --          --          --        --          --          --          --          <.050 <.050 --         

NAPROP- NEB- NORFLUR ORY- METHYL PEB- PENDI- PER-
AMIDE URON, AZON, ZALIN, OXAMYL, PARA- ULATE METH- METHRIN PHORATE
WATER WATER, WATER, WATER, WATER, PARA- THION WATER ALIN CIS WATER
FLTRD FLTRD, FLTRD, FLTRD, FLTRD, THION, WAT FLT FILTRD WAT FLT WAT FLT FLTRD
0.7 U GF 0.7U GF 0.7U GF 0.7U GF 0.7U DIS- 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U
DATE GF, REC REC REC REC REC SOLVED GF, REC GF, REC GF, 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)
(82684) (49294) (49293) (49292) (38866) (39542) (82667) (82669) (82683) (82687) (82664)
OCT 1997
21... <.0030 <.0150 <.0240 <.0190 <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
NOV
18... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
DEC
16... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
JAN 1998
13... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
FEB
04... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
MAR
10... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
APR
01... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0100 <.0040 <.0050 <.0020
14... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
28... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
MAY
12... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
27... <.0030 --          --          --          --          <.004 <.0060 <.0040 .0320 <.0050 <.0020
JUN
09... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
18... <.0030 <.0150 <.0240 <.790   <.0180 <.004 <.0060 <.0040 .0370 <.0050 <.0020
23... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0300 <.0050 <.0020
JUL
07... <.0030 <.0150 <.0240 <1.13     <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
07... --          --          --          --          --          --        --          --          --          --          --         
21... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
21... --          --          --          --          --          --        --          --          --          --          --         
AUG
04... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
04... --          --          --          --          --          --        --          --          --          --          --         
12... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
18... <.0030 <.0150 <.0240 <.310   <.430   <.004 <.0060 <.0040 <.0040 <.0050 <.0020
18... --          --          --          --          --          --        --          --          --          --          --         
SEP
01... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
01... --          --          --          --          --          --        --          --          --          --          --         
15... <.0030 <.0150 <.0240 <.310   <.0180 <.004 <.0060 <.0040 <.0040 <.0050 <.0020
15... --          --          --          --          --          --        --          --          --          --          --         

PIC- PRON- PRO- PRO- PRO- PRO- TEBU-
LORAM, PRO- AMIDE PROP- PANIL PARGITE PHAM, POXUR, SI- THIURON
WATER, METON, WATER CHLOR, WATER WATER WATER, WATER, MAZINE, WATER
FLTRD, WATER, FLTRD WATER, FLTRD FLTRD FLTRD, FLTRD, SILVEX, WATER, FLTRD
GF 0.7U DISS, 0.7 U DISS, 0.7 U 0.7 U GF 0.7U GF 0.7U DIS- DISS, 0.7 U
DATE REC REC GF, REC REC GF, REC GF, REC REC REC SOLVED 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)
(49291) (04037) (82676) (04024) (82679) (82685) (49236) (38538) (39762) (04035) (82670)
OCT 1997
21... <.0500 .0289 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0971 E.0075
NOV
18... <.0500 E.0152 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0106 <.0100
DEC
16... <.0500 .0200 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 <.0050 .0181
JAN 1998
13... <.0500 E.0078 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0051 E.0069
FEB
04... <.0500 E.0058 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 E.0042 <.0100
MAR
10... <.0500 E.0054 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 <.0050 <.0100
APR
01... <.0500 <.0180 <.0030 <.0070 <.0800 <.0130 <.0350 <.0350 <.0210 <.0100 <.0100
14... <.0500 E.0077 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0081 <.0100
28... <.0500 E.0118 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0276 <.0100
MAY
12... <.0500 .0209 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0695 .0118
27... --          .0187 <.0030 <.0070 <.0040 <.0130 --          --          --          .0728 .0148
JUN
09... <.0500 E.0141 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0354 E.0090
18... <.0500 .0283 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0631 .0100
23... <.0500 .0304 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0393 E.0091
JUL
07... <.0500 .0259 <.0030 <.0070 <.0040 <.0130 <10.2       <.0350 <.0210 .0249 <.0100
07... --          <.0500 --          <.0500 --          --          --          --          --          <.0500 --         
21... <.0500 .0226 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0145 <.0100
21... --          <.0500 --          <.0500 --          --          --          --          --          <.0500 --         
AUG
04... <.0500 .0220 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 <.0100 <.0100
04... --          <.0500 --          <.0500 --          --          --          --          --          <.0500 --         
12... <.0500 .0357 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 <.0050 <.0100
18... <.0500 .0475 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 <.0050 <.0100
18... --          .0800 --          <.0500 --          --          --          --          --          <.0500 --         
SEP
01... <.0500 .0290 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0091 .0120
01... --          <.0500 --          <.0500 --          --          --          --          --          <.0500 --         
15... <.0500 .0207 <.0030 <.0070 <.0040 <.0130 <.0350 <.0350 <.0210 .0054 <.0100
15... --          <.0500 --          <.0500 --          --          --          --          --          <.0500 --         

TER- TER- THIO- TRIAL- TRI- TRI- SED.
BACIL BUFOS BENCARB LATE CLOPYR, FLUR- 2,4-DB SUSP.
WATER WATER WATER WATER WATER, ALIN WATER, SEDI- SIEVE
FLTRD FLTRD FLTRD FLTRD FLTRD, WAT FLT 2,4,5-T 2,4-D, FLTRD, MENT, DIAM.
0.7 U 0.7 U 0.7 U 0.7 U GF 0.7U 0.7 U DIS- DIS- GF 0.7U SUS- % FINER
DATE GF, REC GF, REC GF, REC GF, REC REC GF, REC SOLVED SOLVED 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
(82665) (82675) (82681) (82678) (49235) (82661) (39742) (39732) (38746) (80154) (70331)
OCT 1997
21... <.0070 <.0130 <.0020 <.0010 <.0500 <.0020 <.0350 <.035 <.0350 66 98
NOV
18... <.0070 <.0130 <.0020 .0077 <.250   <.0020 <.0350 <.150 <.240   53 97
DEC
16... <.0070 <.0130 <.0020 E.0050 <.250   <.0020 <.0350 <.150 <.240   75 90
JAN 1998
13... <.0070 <.0130 <.0020 E.0027 <.250   <.0020 <.0350 <.150 <.240   230 86
FEB
04... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   95 93
MAR
10... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   307 96
APR
01... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   44 90
14... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   204 97
28... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 .050 <.240   56 80
MAY
12... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 .360 <.240   63 73
27... <.0070 <.0130 <.0020 <.0010 --          <.0020 --          --        --          108 94
JUN
09... E.0088 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 .350 <.240   690 94
18... <.0070 <.0130 <.0020 <.0010 <.250   E.0028 <.0350 .380 <.240   251 92
23... <.0070 <.0130 <.0020 <.0010 <.250   E.0017 <.0350 .100 <.240   130 94
JUL
07... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 E.090 <.240   83 84
07... --          --          --          --          --          --          --          --        --          -- --
21... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   1010 95
21... --          --          --          --          --          --          --          --        --          -- --
AUG
04... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   106 98
04... --          --          --          --          --          --          --          --        --          -- --
12... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   310 98
18... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   123 99
18... --          --          --          --          --          --          --          --        --          -- --
SEP
01... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   130 99
01... --          --          --          --          --          --          --          --        --          -- --
15... <.0070 <.0130 <.0020 <.0010 <.250   <.0020 <.0350 <.150 <.240   94 97
15... --          --          --          --          --          --          --          --        --          -- --



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data