U.S. Geological Survey
Water Resources Data - Ohio, Water Year 97, Vol. 2 | Grand River Basin
Water-Discharge and NAWQA WQ
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                              04211820 GRAND RIVER AT HARPERSFIELD, OHIO
                      
LOCATION.--Lat 41045'19", long 80056'55", Ashtabula County, Hydrologic Unit 04110004, on left bank, 2000 ft downstream 
of bridge on State Highway 534, 0.25 mi south of Harpersfield, 4.85 mi upstream of Mill Creek confluence.
DRAINAGE AREA.--552 mi2.
                                              WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--March 1996 to September 1996.
GAGE.--Water-stage recorder. Altitude of gage is 735 ft above sea level.
REMARKS.--Records excellent except for periods of estimated record, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 10,000 ft3/s Apr. 24, 1996, gage height, 9.15 ft; minimum daily 
discharge, 6.9 ft3/s Sept. 6, 1996.


                       DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997                   
                                                     DAILY MEAN VALUES                                                
 
 DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
   1      1030     1060     2540     e690      856     4810      985      376     3300       92     13         28
   2       547      816     4040      677      660     4360      810      288     9200      101     12         25
   3       266      593     2540      864      743     3450      604      320   e12600       79     12         26
   4       166      448     1860      848     1260     2100      442      821   e11100       62     11         27
   5       116      414     1480      902     4760     1560      358      772    e5500       54      9.9       28
 
   6        88      383     1090     1510     4210     2790      318     1740    e3500       46      9.0       27
   7        69      332      903     1120     2420     2800      279     1800    e1900       40      8.3       27
   8        58     1010      741     e772     1870     2350      237     1190    e1000       35      7.9       34
   9        59     3940      630     e565    e1370     2430      209     1180     e600       32      7.5       35
  10       177     5150      557     e492      839     3750      198     1190     e350       30      7.4       38
 
  11       257     4150      814     e390      565     3150      197     1210     e200       28      8.9       42
  12       235     3190     3380     e300     e427     1930      589      806      137       28      9.3       61
  13       181     2750     3400     e250     e500     1470     2960      568      205       27     10         92
  14       132     2420     2760     e230      382     3300     2260      427      565       26      9.7       81
  15       102     1960     2510     e250     e339     5260     1750      386      352       24     12         58
 
  16        83     1560     1980     e270     e320     2960     1400      549      190       21     16         43
  17        65     1310     2460     e250     e340     2230      843      692      473       19     27         34
  18       122     3220     3460     e240      351     1700      560      584      560       18     58         28
  19      2540     5010    e2060     e230     1250     1040      502     1480      942       16     98         25
  20      5650     3280    e1500     e220     3400      674      432     4150      657       15     84         34
 
  21      4110     1990     e890     e215     3000      501      334     2230      349       15     65         70
  22      2810     1230      654      332     2490      432      291     1080      203       14     67        210
  23      2010      877      472    e1800     1780      440      412      607      140       14     77        152
  24      1730      737     2360    e1900     1120     e500      449      371      107       15     85         88
  25      1260     1290    e3240     2080     e618      525      438      311       87       16    108         64
 
  26       830     5030    e2040    e2300      492      975      384      803       77       16     81         50
  27       547     4850     1600    e1690     6340     1150      308     1080       89       17     61         42
  28       393     2580     1340    e1900     9570      860      292      796       96       17     57         36
  29       311     1860     1640    e1800      ---      640      372      505      110       16     49         32
  30       456     1510     1320    e1600      ---      548      428      325       89       15     39         31
  31      1160      ---      955     1180      ---      864      ---      337      ---       14     32        ---
 
 TOTAL   27560    64950    57216    27867    52272    61549    19641    28974    54678      962   1151.9     1568
 MEAN      889     2165     1846      899     1867     1985      655      935     1823     31.0     37.2     52.3
 MAX      5650     5150     4040     2300     9570     5260     2960     4150    12600      101      108      210
 MIN        58      332      472      215      320      432      197      288       77       14      7.4       25
 
 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 1997, BY WATER YEAR (WY)                                 
 
 MEAN      889     2165     1846      899     1867     1744     1204     1179     1321     90.4     47.0      263
 MAX       889     2165     1846      899     1867     1985     1754     1424     1823      150     56.9      474
 (WY)     1997     1997     1997     1997     1997     1997     1996     1996     1997     1996     1996     1996
 MIN       889     2165     1846      899     1867     1503      655      935      820     31.0     37.2     52.3
 (WY)     1997     1997     1997     1997     1997     1996     1997     1997     1996     1997     1997     1997
 
 SUMMARY STATISTICS                            FOR 1997 WATER YEAR                        WATER YEARS 1996 - 1997
 
 ANNUAL TOTAL                                   398388.9                                                         
 ANNUAL MEAN                                      1091                                     1091                  
 HIGHEST ANNUAL MEAN                                                                       1091              1997
 LOWEST ANNUAL MEAN                                                                        1091              1997
 HIGHEST DAILY MEAN                              12600      Jun  3                        12600       Jun  3 1997
 LOWEST DAILY MEAN                                   7.4    Aug 10                            6.9     Sep  6 1996
 ANNUAL SEVEN-DAY MINIMUM                            8.3    Aug  6                            8.3     Aug  6 1997
 INSTANTANEOUS PEAK FLOW                        e16000      Jun  3                       e16000       Jun  3 1997
 INSTANTANEOUS PEAK STAGE                           11.38   Jun  3                           11.38    Jun  3 1997
 INSTANTANEOUS LOW FLOW                              6.9    Aug  9                            6.2     Sep  6 1996
 10 PERCENT EXCEEDS                               2980                                     2800                  
 50 PERCENT EXCEEDS                                492                                      440                  
 90 PERCENT EXCEEDS                                 26                                       27                  

e Estimated.

                            04211820 GRAND RIVER AT HARPERSFIELD, OHIO

                 National Water-Quality Assessment Program, Lake Erie-Lake St. Clair Basin Study Unit

                                            WATER-QUALITY RECORDS

The data described in the following table were collected and analyzed as part of the NAWQA (National Water-
Quaity Assessment Program) project in the Lake Erie-Lake St. Clair Basin. The objectives of the NAWQA program are to 
broadly characterize the water quality of the Nation's streams and aquifers in relation to human and natural 
factors. This project is one of 60 river basin and aquifer assessment projects being implemented across the nation. 
At any one time, 15 to 20 of these projects are actively collecting data. The period of high-intensity data 
collection for the Lake Erie-Lake St. Clair Basin project is in water years 1996-98.
There are four stream sites in Ohio for which data are being reported in this publication as part of the NAWQA 
study: Auglaize River near Ft. Jennings (04186500), Maumee River at Waterville (04193500), Cuyahoga River at LTV 
Steel at Cleveland (04208504), and Grand River at Harpersfield (04211820). Three sites are reported in the 1997 
Michigan annual data report: Black River near Jeddo, MI (04159492), Clinton River at Sterling Heights, MI (04161820) 
and River Raisin near Manchester, MI (04175600). Two Sites are reported in the 1997 Indiana annual data report:   
St. Joseph River near Newville, IN (04178000), and Maumee River at New Haven, IN (04183000). One site is reported in 
the 1997 New York annual data report: Cattaraugus Creek at Gowanda, NY (04213500). 
These data also can be obtained electronically at http//oh.water.usgs.gov/nawqa.index.html.

---, no data; <, concentration or value reported is less than that indicated; E, estimated value; K, value is 
estimated from a non-ideal colony count

                            WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997

                    DIS-              PH                        BARO-            OXYGEN,   COLI-   E. COLI         
                  CHARGE,   SPE-     WATER                      METRIC             DIS-    FORM,    WATER    MAGNE-
                   INST.    CIFIC    WHOLE                      PRES-             SOLVED   FECAL,   WHOLE     SIUM,
                   CUBIC    CON-     FIELD   TEMPER-  TEMPER-    SURE   OXYGEN,   (PER-    0.7      TOTAL     DIS- 
                    FEET    DUCT-   (STAND-   ATURE    ATURE     (MM      DIS-     CENT    UM-MF   UREASE    SOLVED
 DATE      TIME     PER     ANCE      ARD      AIR     WATER      OF     SOLVED   SATUR-  (COLS./  (COL /    (MG/L 
                   SECOND  (US/CM)   UNITS)  (DEG C)  (DEG C)    HG)     (MG/L)   ATION)  100 ML)  100 ML)   AS MG)
                  (00061)  (00095)  (00400)  (00020)  (00010)  (00025)  (00300)  (00301)  (31625)  (31633)  (00925)
OCT     
  24...    1015   1770         223      7.4     10.0     10.0      734      9.2       85      410     K200    5.8  
NOV     
  21...    0945   2050         183      7.4      3.0      3.0      740     12.5       95      410      260    4.7  
DEC     
  05...    0915   1540         180      7.5      0.5      3.0      740     12.7       96      600     --      4.8  
JAN     
  16...    1000    267         291      7.5     -9.0      0.0      735     12.0       85     --       --      4.0  
FEB     
  06...    0930   4400         167      6.8      0.0      0.0      753     12.6       87      900      800    3.5  
  27...    0930   5430         190      7.3     17.0      2.5      728     11.7       90     --       1200    4.0  
MAR     
  13...    0900   1530         182      7.4     -3.0      4.0      754     12.1       92     --       K160    4.5  
  27...    0830   1200         233      7.7     11.0      5.0      739     11.9       95     --        360    5.0  
APR     
  10...    0845    197         278      8.1     -3.0      6.0      752     11.9       97     --        K42    7.1  
  24...    0900    452         257      7.8      8.5      9.0      735     10.4       93     --        170    6.0  
MAY     
  05...    1200    766         246      7.7     10.5     13.0      744     10.4      101     --        210    5.9  
  22...    0900   1140         206      7.7      8.5     14.5      749      8.6       87     --        220    5.0  
JUN     
  05...    0930   5500         128      7.0     16.0     15.5      743      9.8      100     --        340    3.4  
JUL     
  02...    0840    102         278      7.7     28.5     23.5      738      7.7       93     --       5100    7.4  
  10...    0915     30         371      8.1     18.0     21.5      749      8.5       98     --        K20    9.7  
  31...    0900     14         384      8.0     21.5     24.0      752      8.4      101     --       --     11    
AUG     
  14...    0815      9.8       414      7.8     15.0     20.5      744      7.2       82     --        K17   11    
SEP     
  08...    1230     34         488      8.6     18.0     22.5      742      9.8      115     --        K36   12    
  25...    0930     62         466      7.8     15.0     14.5      734      9.5       94     --        K50   12    

                           BICAR-    CAR-     ALKA-                                       SOLIDS,   NITRO-   NITRO-
                   POTAS-  BONATE   BONATE   LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN, 
         SODIUM,    SIUM,   WATER    WATER   WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3
          DIS-      DIS-   DIS IT   DIS IT   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS- 
         SOLVED    SOLVED   FIELD    FIELD    FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED
 DATE     (MG/L    (MG/L   MG/L AS  MG/L AS  MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L 
          AS NA)   AS K)    HCO3      CO3     CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N) 
         (00930)  (00935)  (00453)  (00452)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)
OCT     
  24...   11         3.9        69     --         57    25       17        0.1     6.5        143    0.04     0.41 
NOV     
  21...    9.1       2.6        51     --         41    19       15        0.2     5.7        124    0.02     0.45 
DEC     
  05...    8.4       2.8        49     --         40    21       14        0.1     5.4        122    0.02     0.29 
JAN     
  16...    8.4       1.5        95     --         78    22       19        0.2     3.1        128    0.02     0.41 
FEB     
  06...   10         1.9        53     --         43    15       18       <0.1     4.2        100    0.02     0.53 
  27...   13         2.0        45     --         37    18       24        0.1     3.6        112   <0.01     0.56 
MAR     
  13...   10         2.0        44     --         36    19       18        0.1     3.9        112   <0.01     0.37 
  27...   15         1.9        51     --         42    21       27       <0.1     3.2        140   <0.01     0.32 
APR     
  10...   15         2.0        83     --         68    28       25        0.2     1.5        162   <0.01     0.08 
  24...   15         2.0        74     --         60    25       25        0.1     2.3        161   <0.01     0.26 
MAY     
  05...   15         1.8        80     --         65    20       25        0.2     2.7        139   <0.01     0.13 
  22...    9.7       2.0        70     --         58    16       15        0.2     3.0        133   <0.01     0.30 
JUN     
  05...    5.3       2.3        59     --         48    11        7.9      0.1     4.4        102    0.02     0.44 
JUL     
  02...   12         3.1       100     --         82    21       18        0.2     3.6        171    0.01     0.33 
  10...   17         3.0       127     --        104    30       28        0.2     3.9        220   <0.01     0.14 
  31...   19         2.9       143     --        117    27       28        0.2     1.7        228   <0.01     0.06 
AUG     
  14...   20         2.9       174     --        143    30       29        0.2     1.3        236   <0.01     0.07 
SEP     
  08...   26         3.7       117        7      108    65       44        0.2     2.2        292    0.01     0.20 
  25...   26         3.6       142     --        116    48       40        0.2     3.8        275   <0.01     0.32 

          NITRO-   NITRO-   NITRO-                     PHOS-                              CARBON,                  
           GEN,   GEN,AM-  GEN,AM-            PHOS-   PHORUS             MANGA-  CARBON,  ORGANIC            ACETO-
         AMMONIA  MONIA +  MONIA +   PHOS-   PHORUS    ORTHO,   IRON,    NESE,   ORGANIC   SUS-     SEDI-    CHLOR,
           DIS-   ORGANIC  ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-    DIS-    PENDED    MENT,    WATER 
          SOLVED   TOTAL    DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED  SOLVED    TOTAL    SUS-     FLTRD 
 DATE     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L   (MG/L     (UG/L    (UG/L    (MG/L    (MG/L    PENDED    REC  
          AS N)    AS N)    AS N)    AS P)    AS P)   AS P)     AS FE)   AS MN)   AS C)    AS C)    (MG/L)   (UG/L)
         (00608)  (00625)  (00623)  (00665)  (00666)  (00671)  (01046)  (01056)  (00681)  (00689)  (80154)  (49260)
OCT     
  24...    0.04      0.8      0.6     0.09     0.02     0.02     260      32       10        1.3        30     --  
NOV     
  21...    0.04      0.6      0.4     0.04     0.01     0.02     220      26        7.3      0.7        22   <0.002
DEC     
  05...    0.03      0.6      0.4     0.08     0.05     0.05     220      23        7.2      1.3        28   <0.002
JAN     
  16...    0.05      0.5      0.3     0.07    <0.01     0.01     180      33        5.7      0.6         8   <0.002
FEB     
  06...    0.06      0.8      0.4     0.11     0.03    <0.01     210      38        5.2      1.3        85     --  
  27...    0.07      2.8      0.4     0.74    <0.01     0.01     180      45        5.1     12        1040   <0.002
MAR     
  13...   <0.02      0.5      0.4     0.07    <0.01     0.01     150      19        5.9      1.2        47     --  
  27...   <0.02      0.7      0.3     0.10    <0.01    <0.01     200      31        5.7      1.2        36     --  
APR     
  10...   <0.02      0.3      0.3     0.03    <0.01    <0.01     310      38        5.3      0.5        11     --  
  24...    0.05      0.5      0.4     0.05    <0.01    <0.01     300      45        6.3      0.5        21   <0.002
MAY     
  05...   <0.02      0.5      0.4     0.06    <0.01    <0.01     320      48        7.5      0.7        31   <0.002
  22...    0.04      0.7      0.6     0.09     0.02     0.01     240      13        9.4      0.7        40    0.165
JUN     
  05...    0.04      0.7      0.6     0.11     0.03     0.03     370      24       10        1.7      --      0.410
JUL     
  02...   <0.02      0.7      0.6     0.04    <0.01    <0.01     160       6.1      9.6      1.4        37    0.099
  10...   <0.02      0.7      0.5     0.04    <0.01    <0.01      28      27        7.2      0.8         6    0.121
  31...   <0.02      0.6      0.4     0.04    <0.01     0.01      24      73        7.7      0.6        10    0.029
AUG     
  14...   <0.02      0.6      0.5     0.04     0.01     0.01      20      81        6.9      0.8         9   <0.002
SEP     
  08...   <0.02      0.5      0.4     0.03    <0.01    <0.01       8       8.5      5.4      0.4        10    0.010
  25...   <0.02      0.5     <0.20    0.04    <0.01    <0.01      20      17        5.3      0.8        10    0.012

                           DEETHYL  METHYL     BEN-              CAR-    CARBO-                                    
          ALA-     ATRA-    ATRA-    AZIN-    FLUR-    BUTYL-   BARYL    FURAN             CYANA-   DCPA           
          CHLOR,   ZINE,    ZINE,    PHOS     ALIN     ATE,     WATER    WATER    CHLOR-   ZINE,    WATER          
          WATER,   WATER,   WATER,  WAT FLT  WAT FLD   WATER,   FLTRD    FLTRD   PYRIFOS   WATER,   FLTRD    P,P'  
          DISS,    DISS,    DISS,    0.7 U    0.7 U    DISS,    0.7 U    0.7 U     DIS-    DISS,    0.7 U     DDE  
 DATE     REC,     REC      REC     GF, REC  GF, REC   REC     GF, REC  GF, REC   SOLVED   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)   (UG/L) 
         (46342)  (39632)  (04040)  (82686)  (82673)  (04028)  (82680)  (82674)  (38933)  (04041)  (82682)  (34653)
OCT     
  24...     --       --       --       --       --       --       --       --       --       --       --       --  
NOV     
  21...   <0.002    0.051   E0.034   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004   <0.004   <0.002   <0.006
DEC     
  05...   <0.002    0.039   E0.019   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004   <0.004   <0.002   <0.006
JAN     
  16...   <0.002    0.036   E0.019   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004   <0.004   <0.002   <0.006
FEB     
  06...     --       --       --       --       --       --       --       --       --       --       --       --  
  27...   <0.002    0.044   E0.019   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004   <0.004   E0.002   <0.006
MAR     
  13...     --       --       --       --       --       --       --       --       --       --       --       --  
  27...     --       --       --       --       --       --       --       --       --       --       --       --  
APR     
  10...     --       --       --       --       --       --       --       --       --       --       --       --  
  24...   <0.002    0.035   E0.009   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004   <0.004   <0.002   <0.006
MAY     
  05...   <0.002    0.039   E0.010   <0.080   <0.002   <0.002   <0.003   <0.003   <0.004   <0.004   <0.002   <0.006
  22...    0.006    0.595   E0.031   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004    0.045   E0.001   <0.006
JUN     
  05...    0.075    2.57    E0.072   <0.001   <0.002   <0.002   E0.012   <0.003    0.007    0.034   E0.001   <0.006
JUL     
  02...    0.138    1.63    E0.066   <0.001   <0.002   <0.002   E0.007   <0.003    0.106    0.035   <0.002   <0.006
  10...    0.015    1.50    E0.065   <0.001   <0.002   <0.002   <0.003   <0.003   <0.004    0.035   <0.002   <0.006
  31...    0.005    0.635   E0.071   <0.001   <0.002   <0.002   <0.003   <0.003   E0.004    0.024   <0.002   <0.006
AUG     
  14...   <0.002    0.490   E0.056   <0.001   <0.002   <0.002   <0.003   <0.003    0.021    0.017   <0.002   <0.006
SEP     
  08...   <0.002    0.346   E0.044   <0.100   <0.002   <0.002   <0.003   <0.003   <0.004    0.017   <0.002   <0.006
  25...   <0.002    0.276   E0.027   <0.080   <0.002   <0.002   E0.013   <0.003   <0.004    0.009   <0.002   <0.006

                               2,6-DI-   DISUL-            ETHAL-   ETHO-                                LIN- 
                                ETHYL    FOTON    EPTC     FLUR-    PROP                                URON  
               DI-      DI-    ANILINE   WATER    WATER    ALIN     WATER   FONOFOS   ALPHA             WATER 
             AZINON,   ELDRIN  WAT FLT   FLTRD    FLTRD   WAT FLT   FLTRD    WATER     BHC    LINDANE   FLTRD 
               DIS-     DIS-    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    DISS      DIS-    DIS-     0.7 U 
     DATE     SOLVED   SOLVED  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC    REC    SOLVED   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) 
             (39572)  (39381)  (82660)  (82677)  (82668)  (82663)  (82672)  (04095)  (34253)  (39341)  (82666)
 OCT     
   24...        --       --       --       --       --       --       --       --       --       --       --  
 NOV     
   21...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 DEC     
   05...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 JAN     
   16...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 FEB     
   06...        --       --       --       --       --       --       --       --       --       --       --  
   27...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 MAR     
   13...        --       --       --       --       --       --       --       --       --       --       --  
   27...        --       --       --       --       --       --       --       --       --       --       --  
 APR     
   10...        --       --       --       --       --       --       --       --       --       --       --  
   24...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 MAY     
   05...       0.007   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
   22...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 JUN     
   05...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 JUL     
   02...       0.040   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
   10...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
   31...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 AUG     
   14...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
 SEP     
   08...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002
   25...      <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004   <0.002

                                          MOL-   NAPROP-           METHYL     PEB-    PENDI-    PER-          
                                METRI-   INATE    AMIDE             PARA-    ULATE    METH-   METHRIN  PHORATE
              MALA-    METO-    BUZIN    WATER    WATER    PARA-    THION    WATER    ALIN      CIS     WATER 
              THION,  LACHLOR  SENCOR    FLTRD    FLTRD    THION,  WAT FLT   FILTRD  WAT FLT  WAT FLT   FLTRD 
               DIS-    WATER    WATER    0.7 U    0.7 U     DIS-    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U 
     DATE     SOLVED  DISSOLV  DISSOLV  GF, REC  GF, 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) 
             (39532)  (39415)  (82630)  (82671)  (82684)  (39542)  (82667)  (82669)  (82683)  (82687)  (82664)
 OCT     
   24...        --       --       --       --       --       --       --       --       --       --       --  
 NOV     
   21...      <0.005    0.021   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 DEC     
   05...      <0.005    0.023   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
JAN     
   16...      <0.005    0.014   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 FEB     
   06...        --       --       --       --       --       --       --       --       --       --       --  
   27...      <0.005    0.009   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 MAR     
   13...        --       --       --       --       --       --       --       --       --       --       --  
   27...        --       --       --       --       --       --       --       --       --       --       --  
 APR     
   10...        --       --       --       --       --       --       --       --       --       --       --  
   24...      <0.005    0.016   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 MAY     
   05...      <0.005    0.014   <0.010   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
   22...      <0.005    0.315    0.012   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 JUN     
   05...      <0.005    1.51     0.120   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 JUL     
   02...      <0.005    0.609    0.032   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
   10...      <0.005    0.843    0.033   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
   31...      <0.005    0.287   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 AUG     
   14...      <0.005    0.174   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
 SEP     
   08...      <0.005    0.129   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002
   25...      <0.005    0.108   <0.004   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005   <0.002

                       PRON-              PRO-     PRO-             TEBU-     TER-     TER-    THIO-    TRIAL-
              PRO-     AMIDE    PROP-    PANIL   PARGITE   SI-     THIURON   BACIL    BUFOS   BENCARB   LATE  
              METON,   WATER    CHLOR,   WATER    WATER   MAZINE,   WATER    WATER    WATER    WATER    WATER 
              WATER,   FLTRD    WATER,   FLTRD    FLTRD    WATER,   FLTRD    FLTRD    FLTRD    FLTRD    FLTRD 
              DISS,    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 
     DATE     REC     GF, REC   REC     GF, REC  GF, REC   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)   (UG/L)   (UG/L)   (UG/L) 
             (04037)  (82676)  (04024)  (82679)  (82685)  (04035)  (82670)  (82665)  (82675)  (82681)  (82678)
 OCT     
   24...        --       --       --       --       --       --       --       --       --       --       --  
 NOV     
   21...      <0.018   <0.003   <0.007   <0.004   <0.013   <0.005   <0.010   <0.007   <0.013   <0.002   <0.001
 DEC     
   05...      <0.018   <0.003   <0.007   <0.004   <0.013   <0.005   <0.010   <0.007   <0.013   <0.002   <0.001
 JAN     
   16...      E0.008   <0.003   <0.007   <0.004   <0.013    0.006   <0.010   <0.007   <0.013   <0.002   <0.001
 FEB     
   06...        --       --       --       --       --       --       --       --       --       --       --  
   27...      <0.018   <0.003   <0.007   <0.004   <0.013   <0.005   <0.010   <0.007   <0.013   <0.002   <0.001
 MAR     
   13...        --       --       --       --       --       --       --       --       --       --       --  
   27...        --       --       --       --       --       --       --       --       --       --       --  
 APR     
   10...        --       --       --       --       --       --       --       --       --       --       --  
   24...      E0.014   <0.003   <0.007   <0.004   <0.013    0.009   <0.010   <0.007   <0.013   <0.002   <0.001
 MAY     
   05...      E0.013   <0.003   <0.007   <0.004   <0.013    0.030   <0.010   E0.014   <0.013   <0.002   <0.001
   22...      E0.007   <0.003   <0.007   <0.004   <0.013    0.034   <0.010   <0.007   <0.013   <0.002   <0.001
 JUN     
   05...      E0.009   <0.003   <0.007   <0.004   <0.013    0.177   <0.010   <0.007   <0.013   <0.002   <0.001
 JUL     
   02...      <0.018   <0.003   <0.007   <0.004   <0.013    0.124   <0.010   <0.007   <0.013   <0.002   <0.001
   10...       0.019   <0.003   <0.007   <0.004   <0.013    0.056   <0.010   <0.007   <0.013   <0.002   <0.001
   31...      E0.017   <0.003   <0.007   <0.004   <0.013    0.056   <0.010   <0.007   <0.013   <0.002   <0.001
 AUG     
   14...      E0.017   <0.003   <0.007   <0.004   <0.013    0.040   <0.010   <0.007   <0.013   <0.002   <0.001
 SEP     
   08...       0.044   <0.003   <0.007   <0.004   <0.013    0.025   <0.010   <0.007   <0.013   <0.002   <0.001
   25...      E0.013   <0.003   <0.007   <0.004   <0.013    0.017   <0.010   <0.007   <0.013   <0.002   <0.001


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