Station list     Available data
ILLINOIS RIVER BASIN


05553500       ILLINOIS RIVER AT OTTAWA



LOCATION.--Lat 41°20'17.22", long 88°51'10.25", in SW1/4SW1/4 sec.11, T.33 N., R.3 E., LaSalle County, Hydrologic Unit 07130001 downstream of the railroad bridge, 0.25 miles, and downstream 0.5 miles of the Route 23 bridge in Ottawa and the confluence with the Fox River.

DRAINAGE AREA.--10,949 mi2.

PERIOD OF RECORD.--February 1997 to current year.
WATER-QUALITY
BARO- OXYGEN, PH HARD-
AGENCY AGENCY METRIC DIS- WATER SPE- HARD- NESS
ANA- COL- PRES- SOLVED WHOLE CIFIC NESS NONCARB CALCIUM
LYZING LECTING SURE (PER- OXYGEN, FIELD CON- TEMPER- TEMPER- TOTAL DISSOLV DIS-
SAMPLE SAMPLE (MM CENT DIS- (STAND- DUCT- ATURE ATURE (MG/L FLD. AS SOLVED
DATE (CODE (CODE OF SATUR- SOLVED ARD ANCE AIR WATER AS CACO3 (MG/L
NUMBER) NUMBER) HG) ATION) (MG/L) UNITS) (US/CM) (DEG C) (DEG C) CACO3) (MG/L) AS CA)
(00028) (00027) (00025) (00301) (00300) (00400) (00095) (00020) (00010) (00900) (00904) (00915)
MAR 1999
11... 80020 81700 758 87 11.0 7.6 857 3.0 5.0 290 96 69
APR
13... 80020 81700 754 108 11.2 7.8 886 15.0 13.3 280 100 67
MAY
13... 80020 81700 747 104 9.4 7.8 790 14.5 19.4 280 98 68
JUN
09... 80020 81700 750 113 8.8 7.9 698 35.0 27.2 280 96 68
14... 80020 81700 751 94 7.9 7.6 506 23.5 23.0 200 66 47
JUL
14... 80020 81700 749 144 11.1 8.6 692 30.0 27.6 260 90 63
20... 1028 81700 -- 91 7.0 8.0 798 --    29.0 -- -- --
AUG
10... 80020 81700 742 124 9.7 8.4 709 30.2 26.7 230 78 49
SEP
08... 80020 81700 744 106 8.2 8.3 670 27.5 27.0 230 73 52
ALKA- BICAR- CAR- NITRO-
MAGNE- POTAS- SODIUM LINITY BONATE BONATE CHLO- FLUO- SILICA, GEN,
SIUM, SIUM, AD- SODIUM, WAT DIS WATER WATER RIDE, RIDE, DIS- SULFATE AMMONIA
DIS- DIS- SORP- DIS- TOT IT DIS IT DIS IT DIS- DIS- SOLVED DIS- DIS-
SOLVED SOLVED TION SOLVED FIELD FIELD FIELD SOLVED SOLVED (MG/L SOLVED SOLVED
DATE (MG/L (MG/L RATIO (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L AS (MG/L (MG/L
AS MG) AS K) AS NA) CACO3 HCO3 CO3 AS CL) AS F) SIO2) AS SO4) AS N)
(00925) (00935) (00931) (00930) (39086) (00453) (00452) (00940) (00950) (00955) (00945) (00608)
MAR 1999
11... 29 3.6 2    65 194 237 -- <.10 .32 4.1 69 .126
APR
13... 26 4.4 2    74 173 211 -- 120      .36 3.6 72 .268
MAY
13... 27 3.9 1    44 179 219 2 74      .35 6.0 66 .117
JUN
09... 27 3.7 1    38 186 219 4 64      .32 5.6 60 .020
14... 20 4.0 .8 26 133 162 -- 43      .29 7.7 41 .114
JUL
14... 26 4.9 1    46 173 202 4 73      .45 3.6 74 <.020
20... -- --    --    -- -- -- -- --      --      --    -- --       
AUG
10... 26 5.3 2    54 152 178 4 83      .45 2.5 68 <.020
SEP
08... 24 6.0 2    58 156 181 4 86      .49 4.6 75 <.020
NITRO- NITRO- NITRO- NITRO- NITRO- NITRO- PHOS-
GEN,AM- GEN,AM- NITRO- GEN, GEN, GEN, NITRO- GEN, PHATE, PHOS-
MONIA + MONIA + GEN NITRATE NO2+NO3 ORGANIC GEN, NITRO- NITRITE ORTHO, PHORUS
ORGANIC ORGANIC DIS- DIS- DIS- DIS- ORGANIC GEN, DIS- DIS- DIS-
DIS. TOTAL SOLVED SOLVED SOLVED SOLVED TOTAL TOTAL SOLVED SOLVED SOLVED
DATE (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L
AS N) AS N) AS N) AS N) AS N) AS N) AS N) AS N) AS N) AS PO4) AS P)
(00623) (00625) (00602) (00618) (00631) (00607) (00605) (00600) (00613) (00660) (00666)
MAR 1999
11... .71 .96 6.6 5.81 5.86 .58 .83 6.8 .052 .62 <.050
APR
13... .83 1.2   5.0 4.06 4.15 .56 .89 5.3 .090 1.1   .440
MAY
13... .73 1.4   8.2 7.45 7.52 .61 1.2   8.9 .068 .73 .290
JUN
09... .54 .92 7.9 7.33 7.40 .51 .90 8.3 .065 .52 .204
14... .76 2.1   9.0 8.10 8.21 .64 2.0   10    .115 .75 .267
JUL
14... .56 1.2   3.8 3.24 3.28 --      --      4.5 .038 1.4   .509
20... --      --      --    --      --      --      --      --    --        --      --       
AUG
10... .37 1.6   2.2 1.82 1.86 --      --      3.4 .047 1.3   .328
SEP
08... .44 1.1   3.0 2.58 2.60 --      --      3.7 .027 1.7   .521
PHOS- SOLIDS, 2,6-DI-
PHORUS RESIDUE MANGA- ETHYL ACETO- ALA- ATRA-
ORTHO, PHOS- AT 180 IRON, NESE, ANILINE CHLOR, CHLOR, ALPHA ZINE,
DIS- PHORUS DEG. C DIS- DIS- WAT FLT WATER WATER, BHC WATER,
SOLVED TOTAL GAGE DIS- SOLVED SOLVED 0.7 U FLTRD DISS, DIS- DISS,
DATE (MG/L (MG/L HEIGHT SOLVED (UG/L (UG/L GF, REC REC REC, SOLVED REC
AS P) AS P) (FEET) (MG/L) AS FE) AS MN) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(00671) (00665) (00065) (70300) (01046) (01056) (82660) (49260) (46342) (34253) (39632)
MAR 1999
11... .203 .322 --      528 12    11    --          --          --        --          --       
APR
13... .369 .515 459.40 527 11    3.9 <.0030 .0991 .008 <.0020 .161
MAY
13... .239 .585 460.75 458 E8.1 <3.0 <.0030 1.97     .064 <.0020 3.53  
JUN
09... .171 .308 459.00 442 <10    <3.0 <.0030 .830   .027 <.0020 3.06  
14... .246 .728 463.20 343 E9.5 <3.0 <.0030 1.11     .084 <.0020 4.32  
JUL
14... .450 .665 459.30 432 <10    <3.0 <.0030 .0784 <.002 <.0020 .482
20... --        --        --      -- --    --    --          --          --        --          --       
AUG
10... .416 .599 --      408 E7.2 <3.0 <.0030 <.0100 .010 <.0020 .162
SEP
08... .543 .679 --      416 <10    E1.7 <.0030 .0256 <.002 <.0020 .404
BEN- CAR- CARBO- DEETHYL DIAZ-
FLUR- BUTYL- BARYL FURAN CYANA- DCPA ATRA- INON
ALIN ATE, WATER WATER CHLOR- ZINE, WATER ZINE, D10 SRG DI- DI-
WAT FLD WATER, FLTRD FLTRD PYRIFOS WATER, FLTRD WATER, WAT FLT AZINON, ELDRIN
0.7 U DISS, 0.7 U 0.7 U DIS- DISS, 0.7 U DISS, 0.7 U DIS- DIS-
DATE GF, REC REC GF, REC GF, REC SOLVED REC GF, REC REC GF, REC SOLVED SOLVED
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) PERCENT (UG/L) (UG/L)
(82673) (04028) (82680) (82674) (38933) (04041) (82682) (04040) (91063) (39572) (39381)
MAR 1999
11... --          --          --          --          --          --          --          --          --    --        --       
APR
13... <.0020 <.0020 E.0050 <.0030 <.0100 .0150 <.0020 E.0265 97.9 .057 <.001
MAY
13... <.0020 <.0020 <.0030 <.0030 <.0040 .729   <.0020 E.147   121    .036 <.001
JUN
09... <.0020 <.0020 <.0030 <.0030 <.0200 .295   <.0020 E.207   128    .056 <.001
14... <.0020 <.0020 E.0115 E.0929 .0185 .377   <.0020 E.393   115    .042 <.001
JUL
14... <.0020 <.0020 <.0030 <.0030 <.0040 E.0227 <.0020 E.0412 110    .025 <.001
20... --          --          --          --          --          --          --          --          --    --        --       
AUG
10... <.0020 <.0020 <.0030 <.0030 <.0040 .0154 <.0020 E.0295 131    .024 <.001
SEP
08... <.0020 <.0020 <.0030 <.0030 <.0040 .0118 <.0020 E.0209 101    .030 <.001
DISUL- ETHAL- ETHO- HCH LIN- METHYL METHYL
FOTON EPTC FLUR- PROP ALPHA URON AZIN- PARA-
WATER WATER ALIN WATER FONOFOS D6 SRG WATER MALA- PHOS THION
FLTRD FLTRD WAT FLT FLTRD WATER WAT FLT LINDANE FLTRD THION, WAT FLT WAT FLT
0.7 U 0.7 U 0.7 U 0.7 U DISS 0.7 U DIS- 0.7 U DIS- 0.7 U 0.7 U
DATE GF, REC GF, REC GF, REC GF, REC REC GF, REC SOLVED GF, REC SOLVED GF, REC GF, REC
(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) PERCENT (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
(82677) (82668) (82663) (82672) (04095) (91065) (39341) (82666) (39532) (82686) (82667)
MAR 1999
11... --          --          --          --          --          --    --        --          --        --          --         
APR
13... <.0170 <.0020 <.0040 <.0030 <.0030 94.0 <.004 <.0020 <.005 <.0010 <.0060
MAY
13... <.0170 .0316 <.0040 <.0030 <.0030 110    <.004 <.0020 <.005 <.0010 <.0060
JUN
09... <.0170 <.0020 <.0040 <.0030 <.0030 110    <.004 <.0020 <.005 <.0010 <.0060
14... <.0170 <.0020 <.0040 <.0030 <.0030 96.0 <.004 <.0020 <.005 <.0010 <.0060
JUL
14... <.0170 <.0020 <.0040 <.0030 <.0030 82.2 <.004 <.0020 <.005 <.0010 <.0060
20... --          --          --          --          --          --    --        --          --        --          --         
AUG
10... <.0170 <.0020 <.0040 <.0030 <.0030 111    <.004 <.0020 <.005 <.0010 <.0060
SEP
08... <.0170 <.0020 <.0040 <.0030 <.0030 87.4 <.004 <.0020 <.005 <.0010 <.0060
MOL- NAPROP- PEB- PENDI- PER-
METRI- INATE AMIDE ULATE METH- METHRIN PHORATE PRO-
METO- BUZIN WATER WATER PARA- WATER ALIN CIS WATER METON,
LACHLOR SENCOR FLTRD FLTRD P,P' THION, FILTRD WAT FLT WAT FLT FLTRD WATER,
WATER WATER 0.7 U 0.7 U DDE DIS- 0.7 U 0.7 U 0.7 U 0.7 U DISS,
DATE DISSOLV DISSOLV GF, REC GF, REC DISSOLV SOLVED GF, REC GF, REC GF, 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)
(39415) (82630) (82671) (82684) (34653) (39542) (82669) (82683) (82687) (82664) (04037)
MAR 1999
11... --        --        --          --          --          --        --          --          --          --          --         
APR
13... .098 <.004 <.0040 <.0030 <.0060 <.004 <.0040 <.0100 <.0050 <.0020 E.0162
MAY
13... 1.99   .066 <.0040 <.0030 <.0060 <.004 <.0040 <.0300 <.0050 <.0020 .0211
JUN
09... .394 <.010 <.0040 <.0030 <.0060 <.004 <.0040 <.0040 <.0050 <.0020 .0314
14... 1.00   .025 <.0040 <.0030 <.0060 <.004 <.0040 <.0300 <.0050 <.0020 .0256
JUL
14... .090 <.004 <.0040 <.0030 <.0060 <.004 <.0040 <.0040 <.0050 <.0020 E.0176
20... --        --        --          --          --          --        --          --          --          --          --         
AUG
10... .021 <.004 <.0040 <.0030 <.0060 <.004 <.0040 <.0040 <.0050 <.0020 E.0159
SEP
08... .166 <.004 <.0040 <.0030 <.0060 <.004 <.0040 <.0040 <.0050 <.0020 .0196
PRON- PRO- PRO- TEBU- TER- TER- TERBUTH THIO- TRIAL-
AMIDE PROP- PANIL PARGITE SI- THIURON BACIL BUFOS YLAZINE BENCARB LATE
WATER CHLOR, WATER WATER MAZINE, WATER WATER WATER SURROGT WATER WATER
FLTRD WATER, FLTRD FLTRD WATER, FLTRD FLTRD FLTRD WAT FLT FLTRD FLTRD
0.7 U DISS, 0.7 U 0.7 U DISS, 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U
DATE GF, REC REC GF, REC GF, REC REC GF, REC 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) PERCENT (UG/L) (UG/L)
(82676) (04024) (82679) (82685) (04035) (82670) (82665) (82675) (91064) (82681) (82678)
MAR 1999
11... --          --          --          --          --          --          --          --          --          --          --         
APR
13... <.0030 <.0070 <.0040 <.0130 .0238 <.0100 <.0070 <.0130 109          <.0020 <.0010
MAY
13... <.0030 .0382 <.0040 <.0130 .0842 .0115 <.0070 <.0130 130          <.0020 <.0010
JUN
09... <.0030 <.0070 <.0040 <.0130 .0583 .0146 <.0070 <.0130 E.0863 <.0020 <.0010
14... <.0030 <.0070 <.0040 <.0130 .0317 .0115 <.0070 <.0130 E.0779 <.0020 <.0010
JUL
14... <.0030 <.0070 <.0040 <.0130 .0550 <.0200 <.0070 <.0130 --          <.0020 <.0010
20... --          --          --          --          --          --          --          --          --          --          --         
AUG
10... <.0030 <.0070 <.0040 <.0130 .0082 <.0100 <.0070 <.0130 --          <.0020 <.0010
SEP
08... <.0030 <.0070 <.0040 <.0130 .0071 .0147 <.0070 <.0130 --          <.0020 <.0010
TRI- SED. QUALITY
FLUR- SUSP. NUMBER ASSUR- SAMPLE
ALIN SEDI- SIEVE OF ANCE VOLUME
WAT FLT MENT, DIAM. SAM- PURPOSE DATA REP- SCHED- SAM-
0.7 U SUS- % FINER PLING SITE INDICA- LICATE SAMPLE ULE SAMPLER PLING
DATE GF, REC PENDED THAN POINTS VISIT, TOR TYPE PURPOSE 2010 TYPE METHOD,
(UG/L) (MG/L) .062 MM (COUNT) (CODE) CODE (CODE) CODE (ML) (CODE) CODES
(82661) (80154) (70331) (00063) (50280) (99111) (99105) (71999) (99857) (84164) (82398)
MAR 1999
11... --          93 100 10 1001 1 --      15.00 -- 3060 10
APR
13... <.0020 102 97 5 1001 40 --      15.00 970 3039 10
MAY
13... <.0020 233 93 10 1001 1 --      15.00 970 3040 10
JUN
09... <.0020 81 97 10 1001 10 --      15.00 970 3040 10
14... .0041 308 95 10 1003 30 30.00 15.00 925 3039 10
JUL
14... <.0020 68 97 10 1001 30 30.00 15.00 961 3039 10
20... --          -- -- -- 1099 -- --      15.00 -- -- --
AUG
10... <.0020 79 96 10 1001 10 --      15.00 892 3039 10
SEP
08... <.0020 63 98 10 1001 1 --      15.00 917 3039 10


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data