Dunkard Creek at Shannopin, PA

1998 Water-Year
Basic Fixed-Site Water-Quality Records
[drop]

--------

                                             MONONGAHELA RIVER BASIN

                                     03072000  DUNKARD CREEK AT SHANNOPIN, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 39`45'33", long 79`58'15", Greene County, Hydrologic Unit 05020005, on left bank 1,300 ft
   upstream from highway bridge at mine buildings at Shannopin, 1.2 mi north of Dunkard, 3.5 mi upstream from
   mouth, and 4 mi southwest of Greensboro.

DRAINAGE AREA.--229 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1940 to current year.  Prior to December 1940 monthly discharge only, published in
   WSP 1305.

REVISED RECORDS.--WSP 1505:   1955.

GAGE.--Water-stage recorder.  Datum of gage is 806.25 ft above sea level (levels by U.S. Army Corps of Engineers).

REMARKS.--Records good except for estimated daily discharges, which are fair.  Some regulation at low flow by
   mine pumpage above station.  Several measurements of water temperature were made during the year.  U.S. Army
   Corps of Engineers satellite telemeter at station.

PEAK DISCHARGES FOR CURRENT YEAR.--Peak discharges greater than a base discharge of 4,000 ft3/s and maximum (*):

                      Discharge    Gage height                                          Discharge    Gage height
 Date        Time      (ft3/s)        (ft)                         Date        Time      (ft3/s)        (ft)

Jan. 8       1500      *3,130        *7.75


                 DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1      29         19      158      e52      269      457      195      342       62     1340     12        8.0
  2      25         24      180      e58      227      410      207     1430       56      628     11        6.8
  3      20         51      112      e64      193      381      164     1990       48      342     11        5.6
  4      16         44       89      e74      184      333      167      996       41      215     11        7.0
  5      14         34       83      e90      305      326      186     1020       38      165      9.4      6.4

  6      12         28       73      109    e1400      309      160      810       36      129      8.3      7.3
  7      10         54       63      280    e1150      286      146      541       34       97      7.5      6.4
  8       8.3      179       57    e2700     e900      381      145      547       32      104      6.0      4.8
  9       7.4      217       53    e1800      758     1380      221     1190       30      141      5.3      4.8
 10       7.1      106       54     e800      731     1440      408      811       34       99      5.8     11

 11       6.2       67      152     e540      767      820      418      559       59       71     16       12
 12       6.9       51      263     e350     1110      578      334      457      127       57     21        9.5
 13       7.1       42      191     e270     1020      438      273      381      267       48     17        8.3
 14       5.4       52      135     e240      649      366      238      289      521       43     15        5.9
 15       3.8      212      101     e220      465      300      215      218      310       39     13        4.4

 16       4.2      183       79     e210      363      241      186      168      609       37     11        3.4
 17       5.1      113       66     e190      330      205      188      137      758       37     11        2.2
 18       6.3       82       57     e180      521      254      158      113      605       36     18        1.9
 19       6.7       65       53     e170     1760     1140      272       90      560       31     47        1.9
 20       6.7       55       49     e160     1150      869     1430       80      947       29     27        2.1

 21       6.2       49       44     e140      870     1240      863       74      407       27     18        4.9
 22       5.3       62       42      131      659     1540      573       63      220       26     13       13
 23       5.2      115       47      380      556     1090      423       54      140       23      9.7     20
 24       4.9       99       66     1070     1080      763      327       54      101       21      8.0     17
 25       7.0       73      125      653      988      576      254      663       80       21     16       13

 26       8.9       58      207      442      695      453      217      400       68       18     17        9.7
 27      11         52      155      335      541      369      624      180      239       16     26        7.4
 28      14         50      125      397      459      314      592      113     1250       15     21        7.6
 29      20         54     e100      504      ---      265      406       85     2140       14     15        6.0
 30      19         67      e76      422      ---      228      332       74     1350       13     12        5.4
 31      16        ---      e62      339      ---      199      ---       71      ---       13      9.6      ---

TOTAL   324.7     2357     3117    13370    20100    17951    10322    14000    11169     3895    448.6    223.7
MEAN     10.5     78.6      101      431      718      579      344      452      372      126     14.5     7.46
MAX        29      217      263     2700     1760     1540     1430     1990     2140     1340       47       20
MIN       3.8       19       42       52      184      199      145       54       30       13      5.3      1.9
CFSM      .05      .34      .44     1.88     3.13     2.53     1.50     1.97     1.63      .55      .06      .03
IN.       .05      .38      .51     2.17     3.27     2.92     1.68     2.27     1.81      .63      .07      .04

   e  Estimated.

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1998, BY WATER YEAR (WY)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     71.8      165      339      432      509      628      462      328      181     89.4     78.6     74.3
MAX       381     1149     1071     1050     1100     1475     1033      903      877      461      890      573
(WY)     1955     1986     1991     1994     1956     1994     1948     1968     1981     1996     1980     1975
MIN      1.73     2.44     7.46     26.5     63.5      112     80.9     57.4     10.2     4.62     2.45     2.39
(WY)     1952     1954     1954     1967     1954     1987     1971     1986     1966     1962     1962     1953

SUMMARY STATISTICS           FOR 1997 CALENDAR YEAR        FOR 1998 WATER YEAR           WATER YEARS 1941 - 1998

ANNUAL TOTAL                       75825.8                    97278.0
ANNUAL MEAN                          208                        267                        279
HIGHEST ANNUAL MEAN                                                                        462              1994
LOWEST ANNUAL MEAN                                                                         104              1954
HIGHEST DAILY MEAN                  7670     Mar  2           e2700     Jan  8           11200       Mar  5 1963
LOWEST DAILY MEAN                      3.8   Oct 15               1.9   Sep 18,19             .50    Aug 27 1944
ANNUAL SEVEN-DAY MINIMUM               5.5   Oct 14               3.0   Sep 15                .73    Aug 25 1944
INSTANTANEOUS PEAK FLOW                                        3130     Jan  8           17600       Aug 18 1980
INSTANTANEOUS PEAK STAGE                                          7.75  Jan  8              14.27    Aug 18 1980
INSTANTANEOUS LOW FLOW                                            1.6   Sep 20                .40    Aug 28 1944
ANNUAL RUNOFF (CFSM)                    .91                       1.16                       1.22
ANNUAL RUNOFF (INCHES)                12.32                      15.80                      16.58
10 PERCENT EXCEEDS                   437                        780                        686
50 PERCENT EXCEEDS                    84                         99                         99
90 PERCENT EXCEEDS                     8.6                        7.2                        8.1

   e  Estimated.

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued
                                   (National Water-Quality Assessment station)

                                              WATER-QUALITY RECORDS

PERIOD OF RECORD.--November 1975 to August 1981, April 1996 to September 1998 (discontinued).

PERIOD OF DAILY RECORD.--
   SPECIFIC CONDUCTANCE:  July 1997 to September 1998.
   pH:  July 1997 to September 1998.
   WATER TEMPERATURE:  October 1996 to September 1998.

INSTRUMENTATION.--Daily record measured and collected at hourly intervals with in-situ probes and electronic data
  loggers.  Water temperature was measured and collected at hourly intervals using an in-situ probe with an
   electronic data logger from October 1996 to September 1998.

REMARKS.--All water-quality samples were collected and analyzed by the U.S. Geological Survey.  Interruptions in
   the daily record were due to malfunctions of the equipment.  Water temperature, specific conductance, and pH
   data from the in-situ probes often times did not exactly agree with the water temperature, specific
   conductance, and pH of the monthly and storm samples because of the fixed location of the in-situ probes.
   Additional sites in the (NAWQA) fixed-station network are shown in figure 6 on page 28.  An explanation of
   selected abbreviations used in the water-quality tables are given on pages 29-31.

EXTREMES FOR CURRENT YEAR.--
   WATER TEMPERATURE:  Maximum, 28.0`C, July 22; minimum 0.0`C, on may days during winter period.


                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

                    DIS-              PH               BARO-
                  CHARGE,   SPE-     WATER             METRIC            HARD-   ACIDITY            MAGNE-
                   INST.    CIFIC    WHOLE             PRES-             NESS    TOTAL    CALCIUM    SIUM, SODIUM,
                   CUBIC    CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL   HEATED    DIS-      DIS-    DIS-
                    FEET    DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L   (MG/L     SOLVED   SOLVED  SOLVED
 DATE      TIME     PER     ANCE      ARD     WATER      OF     SOLVED    AS     AS        (MG/L    (MG/L    (MG/L
                   SECOND  (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)  CAC03)    AS CA)   AS MG)  AS NA)
                  (00061)  (00095)  (00400)  (00010)  (00025)  (00300)  (00900)  (70508)  (00915)  (00925) (00930)

OCT
 17...     0905       4.9   1350      7.1     10.0      740      9.6      430     14       110      37      113
NOV
 06...     0915      29     1050      7.7      5.0      742     11.6      220      6.0      62      16      123
DEC
 04...     0900      91      502      7.8      6.0      729     11.5      130      3.4      39       8.8     41
JAN
 07...     0945     146      477      7.9      6.5      734     11.9      130      2.2      39       8.9     43
 08...     1530    3890      173      7.5      9.0      726     10.4       56      3.0      17       3.5      7.9
FEB
 04...     1030     173      379      7.9      2.5      730     12.2      120      2.6      34       8.4     25
MAR
 26...     0930     462      311      7.9      7.0      742     11.6      100      2.0      29       7.6     18
APR
 20...     1045    1640      244      7.7     11.0      739     10.4       85     18        25       5.5     13
 27...     1010     565      329      8.0     13.0      755     10.6      120      1.0      33       8.0     22
MAY
 28...     0940     114      365      7.7     19.0      753      8.8      120      4.0      36       8.4     24
JUN
 12...     1000     130      506      7.9     19.0      745      6.5      150      3.5      45      10       46
 29...     1015    3080      180      7.1     19.5      749      8.3       61      3.6      18       3.7      9.0
JUL
 29...     0940      15      780      7.5     23.0      747      7.6      260      8.4      69      22       64
AUG
 19...     1345      45      711      7.9     24.0      756      8.7      180       --      50      14       75
SEP
 23...     0845      19     1450      7.5     18.5      754      7.3      430      7.0     120      29      149


                                             MONONGAHELA RIVER BASIN

                                    03072000  DUNKARD CREEK AT SHANNOPIN, PA.


                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

                        ALKA-                                       SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
               POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
                SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
                DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
               SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
      DATE     (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
               AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
              (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)

  OCT
    17...       3.7       66     530      67         .40     8.6      982     <.010     .234     .067     <.20
  NOV
    06...       3.8      120     250      86         .26     2.7      652      .032     .086    <.020      .17
  DEC
    04...       2.1       74     110      27         .13     3.9      291     <.010     .364    <.020     <.10
  JAN
    07...       1.6       86      95      30         .14     2.1      274     <.010     .349    <.020      .14
    08...       2.2       28      33       6.3      <.10     6.2      103     <.010     .800     .026     1.4
  FEB
    04...       1.2       72      86      12         .18     5.5      236     <.010     .354     .052      .12
  MAR
    26...       1.2       74      70       7.4      <.10     5.4      187      .010     .281    <.020      .11
  APR
    20...       1.5       51      49       7.5      <.10     5.9      149      .010     .381     .065      .32
    27...       1.5       70      67       8.0       .11     3.5      203     <.010     .127     .038      .38
  MAY
    28...       1.7       72      86       8.6      <.10     5.5      227      .032     .377     .053      .22
  JUN
    12...       2.3      110     110      18         .17     2.7      313      .012     .238     .028      .25
    29...       2.1       40      31       4.3      <.10     6.6      118      .014     .397     .020      .49
  JUL
    29...       2.6       98     260      22         .27     4.9      552     <.010     .138     .051      .23
  AUG
    19...       3.0      114     170      34         .25     3.9      445      .012     .072     .050      .29
  SEP
    23...       4.1       90     620      32         .33     3.8      844     <.010     .132     .080      .30




               NITRO-                     PHOS-                                       CARBON,             SED.
              GEN,AM-            PHOS-   PHORUS    ALUM-             MANGA-  CARBON,  ORGANIC             SUSP.
              MONIA +   PHOS-   PHORUS    ORTHO,   INUM,    IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
              ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
               DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
      DATE     (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
               AS N)    AS P)    AS P)   AS P)     AS AL)   AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
              (00623)  (00665)  (00666)  (00671)  (01106)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)

  OCT
    17...       <.20    <.010    <.010    <.010      32      24      854       5.8      <.20       2       86
  NOV
    06...        .16     .012    <.010     .014      56       9.9    108      E3.3       .30       6       91
  DEC
    04...       <.10    <.010    <.010    <.010      53      24       42       1.8       .30       5      100
  JAN
    07...       <.10    <.010    <.010     .013      56      50       35       1.5       .30       7       82
    08...        .28     .425    <.010     .015      19      50       48       4.1      1.9      484       97
  FEB
    04...       <.10    <.010    <.010     .011      53      34       63       1.2      <.20       3       77
  MAR
    26...        .13     .014    <.010     .010      61      17       62       1.2       .40      11       86
  APR
    20...        .19     .035    <.010     .011      29      29       16       2.6      3.4      132       93
    27...        .10     .029    <.010    <.010      59      36       31       2.0      1.1       41       76
  MAY
    28...        .17    <.010    <.010    <.010     106      13       70       2.3       .30      13       89
  JUN
    12...        .17     .037     .053     .016     127      17       46       2.1       .40      22       93
    29...        .36     .171    <.010    <.010      14      44       --       4.1      3.9      563       96
  JUL
    29...        .19    <.010    <.010    <.010      67     <10      326       1.8       .20       3       56
  AUG
    19...        .21     .042    <.010     .013     159      18      123       2.6       .30      10       76
  SEP
    23...        .24     .021    <.010    <.010      44     <10      273       2.4       .20       6       73

                                             MONONGAHELA RIVER BASIN

                                    03072000  DUNKARD CREEK AT SHANNOPIN, PA.

REMARKS.--The following data are for dissolved trace elements in surface water filtered through a 0.45mm filter.


                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

                              DIS-
                            CHARGE,   ALUM-    ANTI-                      BERYL-            CHRO-
                             INST.    INUM,    MONY,   ARSENIC  BARIUM,   LIUM,   CADMIUM   MIUM,   COBALT,
                             CUBIC     DIS-     DIS-     DIS-    DIS-     DIS-      DIS-    DIS-     DIS-
                              FEET    SOLVED   SOLVED   SOLVED  SOLVED    SOLVED   SOLVED   SOLVED  SOLVED
           DATE      TIME     PER     (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L
                             SECOND   AS AL)   AS SB)   AS AS)   AS BA)   AS BE)   AS CD)   AS CR)   AS CO)
                            (00061)  (01106)  (01095)  (01000)  (01005)  (01010)  (01025)  (01030)  (01035)

       SEP
         23...       0845     19       44      <1.0      <1       145     <1.0     <1.0      1.5      5.1




                                          MANGA-   MOLYB-            SELE-            URANIUM
                       COPPER,   LEAD,    NESE,    DENUM,  NICKEL,   NIUM,   SILVER,  NATURAL   ZINC,
                        DIS-      DIS-     DIS-     DIS-    DIS-      DIS-     DIS-     DIS-     DIS-
                        SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED
               DATE     (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L    (µG/L
                        AS CU)   AS PB)   AS MN)   AS MO)   AS NI)   AS SE)   AS AG)   AS U)    AS ZN)
                       (01040)  (01049)  (01056)  (01060)  (01065)  (01145)  (01075)  (22703)  (01090)

           SEP
             23...       2.7     <1.0     273      <1.0     15        <1      <1.0     <1.0     13



                                             MONONGAHELA RIVER BASIN

                                    03072000  DUNKARD CREEK AT SHANNOPIN, PA.


REMARKS.--The following data are for trace elements and other constituents that were part of the suspended-
   sediment fraction of the water sample.  Suspended sediments were dewatered using a continuous flow centrifuge,
   dried, and analyzed directly for total metals using a nitric, hydrofluoric, perchloric acid digestion.  Whole
   water contributions by the suspended sediment were then calculated using the suspended-sediment concentration
   in kilograms per liter (kg/L) and the analyte concentration in milligrams per kilogram (µg/kg) from the direct
   analysis of the suspended sediments, resulting in micrograms per gram (mG/G) concentrations.  Values reported
   in percent are the percent of that constituent in the suspended sediment.  When no trace element was detected
   in the sample, the default reporting value is the method detection limit preceded by a less-than sign (<).


                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

                              DIS-
                            CHARGE,
                             INST.             AN-                       BERYL-             CHRO-
                             CUBIC   ALUM-    TIMONY   ARSENIC  BARIUM    LIUM    CADMIUM   MIUM
                              FEET   INUM      SED.     SED.     SED.     SED.     SED.     SED.
           DATE      TIME     PER    SED,SUS   SUSP.    SUSP.    SUSP.    SUSP.    SUSP.    SUSP.
                             SECOND  PERCENT  (mG/G)   (mG/G)   (mG/G)   (mG/G)   (mG/G)   (mG/G)
                            (00061)  (30221)  (29816)  (29818)  (29820)  (29822)  (29826)  (29829)

       APR
         20...       1045    1640      8.8       1       15       650       3        1       62


                   COBALT             IRON             LITHIUM   MAN-             MOLYB-
                    SEDI-   COPPER    SEDI-    LEAD     SEDI-   GANESE   MERCURY   DENUM   NICKEL
                    MENT     SED.     MENT     SED.     MENT     SED.     SED.     SED.     SED.
           DATE     SUSP.    SUSP.    SUSP.    SUSP.    SUSP.    SUSP.    SUSP.    SUSP.    SUSP.
                   (mG/G)   (mG/G)   PERCENT  (mG/G)   (mG/G)   (mG/G)   (mG/G)   (mG/G)   (mG/G)
                   (35031)  (29832)  (30269)  (29836)  (35050)  (29839)  (29841)  (29843)  (29845)

       APR
         20...        44      24       4.6      31       60      2000       0        <5       57




                    PHOS-                      STRON-            TITA-
                   PHORUS    SELE-             TIUM              NIUM    URANIUM   VANA-
                    SEDI-    NIUM    SILVER    SEDI-    THAL-    SEDI-    SEDI-    DIUM     ZINC
                    MENT     SED.     SED.     MENT     LIUM     MENT     MENT     SED.     SED.
           DATE     SUSP.    SUSP.    SUSP.    SUSP.   SUS SED   SUSP.    SUSP.    SUSP.    SUSP.
                   PERCENT  (mG/G)   (mG/G)   (mG/G)    (mG/G)  PERCENT  (mG/G)   (mG/G)   (mG/G)
                   (30292)  (29847)  (29850)  (35040)  (49955)  (30317)  (35046)  (29853)  (29855)

       APR
         20...      1100       1       <1       160      <50       .54     <50      100      210





                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


           SPECIFIC CONDUCTANCE, µS/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN

                OCTOBER                 NOVEMBER                  DECEMBER                    JANUARY

   1     1030    1000    1010      1260    1260    1260       ---     ---     ---       ---     ---     ---
   2     1010     990    1000      1260    1260    1260       ---     ---     ---       ---     ---     ---
   3     1000     986     993      1260    1260    1260       ---     ---     ---       ---     ---     ---
   4     1030     997    1010      1260    1260    1260       ---     ---     ---       ---     ---     ---
   5     1060    1020    1040      1270    1250    1260       ---     ---     ---       ---     ---     ---

   6     1060    1050    1060      1270    1030    1140       ---     ---     ---       ---     ---     ---
   7     1080    1060    1070      1030     912     947       ---     ---     ---       ---     ---     ---
   8     1090    1080    1090       912     724     817       ---     ---     ---       ---     ---     ---
   9     1090    1080    1090       898     525     652       ---     ---     ---       ---     ---     ---
  10     1090    1090    1090       581     528     556       ---     ---     ---       ---     ---     ---

  11     1110    1090    1100       583     568     579       ---     ---     ---       ---     ---     ---
  12     1140    1100    1120       568     546     553       ---     ---     ---       ---     ---     ---
  13     1160    1140    1140       548     527     537       ---     ---     ---       ---     ---     ---
  14     1150    1130    1140       529     509     521       ---     ---     ---       ---     ---     ---
  15     1160    1120    1140       509     393     451       ---     ---     ---       ---     ---     ---

  16     1280    1160    1210       ---     ---     ---       ---     ---     ---       ---     ---     ---
  17     1270    1110    1210       ---     ---     ---       ---     ---     ---       ---     ---     ---
  18     1280    1190    1200       ---     ---     ---       ---     ---     ---       ---     ---     ---
  19     1290    1270    1280       ---     ---     ---       ---     ---     ---       ---     ---     ---
  20     1290    1280    1280       ---     ---     ---       ---     ---     ---       ---     ---     ---

  21     1300    1290    1290       ---     ---     ---       ---     ---     ---       ---     ---     ---
  22     1300    1220    1240       ---     ---     ---       ---     ---     ---       ---     ---     ---
  23     1240    1240    1240       ---     ---     ---       ---     ---     ---       ---     ---     ---
  24     1250    1240    1240       ---     ---     ---       ---     ---     ---       ---     ---     ---
  25     1250    1240    1240       ---     ---     ---       ---     ---     ---       ---     ---     ---

  26     1250    1240    1240       ---     ---     ---       ---     ---     ---       ---     ---     ---
  27     1250    1240    1250       ---     ---     ---       ---     ---     ---       ---     ---     ---
  28     1250    1240    1250       ---     ---     ---       ---     ---     ---       ---     ---     ---
  29     1260    1240    1250       ---     ---     ---       ---     ---     ---       ---     ---     ---
  30     1260    1250    1260       ---     ---     ---       ---     ---     ---       ---     ---     ---
  31     1270    1250    1260       ---     ---     ---       ---     ---     ---       ---     ---     ---

 MONTH   1300     986    1160      1270     393     870       ---     ---     ---       ---     ---     ---

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


           SPECIFIC CONDUCTANCE, µS/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN

               FEBRUARY                   MARCH                     APRIL                       MAY

   1      ---     ---     ---       ---     ---     ---       411     398     403       ---     ---     ---
   2      ---     ---     ---       ---     ---     ---       419     397     405       ---     ---     ---
   3      ---     ---     ---       ---     ---     ---       440     419     423       ---     ---     ---
   4      ---     ---     ---       ---     ---     ---       442     425     433       ---     ---     ---
   5      ---     ---     ---       ---     ---     ---       ---     ---     ---       ---     ---     ---

   6      ---     ---     ---       ---     ---     ---       430     417     426       ---     ---     ---
   7      ---     ---     ---       ---     ---     ---       438     430     434       ---     ---     ---
   8      ---     ---     ---       ---     ---     ---       439     431     434       ---     ---     ---
   9      ---     ---     ---       ---     ---     ---       448     426     435       ---     ---     ---
  10      ---     ---     ---       ---     ---     ---       427     377     394       ---     ---     ---

  11      ---     ---     ---       ---     ---     ---       380     373     376       ---     ---     ---
  12      ---     ---     ---       ---     ---     ---       373     368     371       ---     ---     ---
  13      ---     ---     ---       ---     ---     ---       384     371     374       ---     ---     ---
  14      ---     ---     ---       ---     ---     ---       394     383     385       ---     ---     ---
  15      ---     ---     ---       ---     ---     ---       398     390     393       ---     ---     ---

  16      ---     ---     ---       ---     ---     ---       400     394     398       ---     ---     ---
  17      ---     ---     ---       ---     ---     ---       397     389     393       ---     ---     ---
  18      ---     ---     ---       ---     ---     ---       414     395     403       ---     ---     ---
  19      ---     ---     ---       ---     ---     ---       414     327     402       ---     ---     ---
  20      ---     ---     ---       ---     ---     ---       327     243     264       ---     ---     ---

  21      ---     ---     ---       ---     ---     ---       279     255     265       ---     ---     ---
  22      ---     ---     ---       ---     ---     ---       298     279     287       ---     ---     ---
  23      ---     ---     ---       ---     ---     ---       325     298     314       ---     ---     ---
  24      ---     ---     ---       ---     ---     ---       342     325     332       ---     ---     ---
  25      ---     ---     ---       ---     ---     ---       360     341     349       ---     ---     ---

  26      ---     ---     ---       ---     ---     ---       380     360     369       ---     ---     ---
  27      ---     ---     ---       334     314     325       ---     ---     ---       ---     ---     ---
  28      ---     ---     ---       347     334     340       ---     ---     ---       ---     ---     ---
  29      ---     ---     ---       360     346     354       ---     ---     ---       427     402     417
  30      ---     ---     ---       373     360     365       ---     ---     ---       450     427     443
  31      ---     ---     ---       398     373     387       ---     ---     ---       481     444     459

 MONTH    ---     ---     ---       398     314     354       448     243     378       481     402     440

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


       SPECIFIC CONDUCTANCE, µS/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN

                 JUNE                     JULY                     AUGUST                    SEPTEMBER

   1      509     481     499       235     210     217       890     849     875       948     917     933
   2      582     509     557       257     216     239       898     868     888       978     947     963
   3      562     551     556       296     257     277       879     863     868      1010     975     992
   4      587     562     575       329     296     313       875     857     865      1010     949     966
   5      656     587     631       357     329     342       956     867     923       976     940     955

   6      661     633     645       420     357     387       950     936     942       973     935     951
   7      656     641     651       430     414     422       965     929     943      1010     955     972
   8      655     645     649       429     420     426      1020     961     986      1060    1010    1030
   9      705     645     670       449     423     428      1090    1010    1040      1090    1040    1080
  10      702     618     669       493     449     475      1090    1070    1080      1040     907     930

  11      620     521     576       497     476     485      1070     822     933      1020     961    1000
  12      ---     ---     ---       498     491     493       918     818     863       996     937     950
  13      612     410     537       532     498     507       897     867     888       943     930     935
  14      421     302     368       549     532     541       867     834     846       991     941     962
  15      312     305     310       569     541     553       881     837     863      1060     991    1030

  16      307     271     289       617     563     590       939     881     917      1070     829    1030
  17      294     240     262       583     561     572       940     894     926      1070     728     899
  18      284     261     270       624     583     607       900     851     864      1010     829     902
  19      308     242     290       656     606     638       872     718     761      1040     593     854
  20      256     202     226       643     628     633       816     751     785      1420     630    1230

  21      291     246     271       690     637     667       961     816     884      1530    1410    1490
  22      328     291     308       722     665     697      1020     961     998      1410    1320    1350
  23      370     328     346       703     689     695      1090    1020    1070       ---     ---     ---
  24      406     367     378       750     699     723      1140    1080    1120       ---     ---     ---
  25      439     394     403       761     722     741      1090     992    1030       ---     ---     ---

  26      442     421     430       771     743     752      1110    1020    1080       ---     ---     ---
  27      426     370     405       777     771     774      1030     937     987       ---     ---     ---
  28      370     242     305       780     769     773       937     903     916       ---     ---     ---
  29      242     177     207       801     776     787       903     880     889       ---     ---     ---
  30      227     191     209       816     797     808       900     873     884       ---     ---     ---
  31      ---     ---     ---       851     812     842       919     900     910       ---     ---     ---

 MONTH    705     177     431       851     210     561      1140     718     930      1530     593    1020

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


            pH VALUES, WATER, WHOLE, FIELD, STANDARD UNITS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN  MEDIAN       MAX     MIN  MEDIAN       MAX     MIN  MEDIAN       MAX     MIN  MEDIAN

                OCTOBER                 NOVEMBER                  DECEMBER                    JANUARY

   1      7.8     7.6     7.7       6.8     6.8     6.8       ---     ---     ---       ---     ---     ---
   2      7.8     7.7     7.7       6.8     6.8     6.8       ---     ---     ---       ---     ---     ---
   3      7.7     7.6     7.7       6.9     6.8     6.8       ---     ---     ---       ---     ---     ---
   4      7.7     7.5     7.6       6.9     6.8     6.9       ---     ---     ---       ---     ---     ---
   5      7.7     7.5     7.6       7.0     6.8     6.9       ---     ---     ---       ---     ---     ---

   6      7.6     7.4     7.5       7.8     6.8     6.9       ---     ---     ---       ---     ---     ---
   7      7.5     7.4     7.5       7.7     7.6     7.7       ---     ---     ---       ---     ---     ---
   8      7.5     7.4     7.4       7.8     7.7     7.7       ---     ---     ---       ---     ---     ---
   9      7.5     7.3     7.4       7.8     7.7     7.8       ---     ---     ---       ---     ---     ---
  10      7.4     7.3     7.4       7.7     7.7     7.7       ---     ---     ---       ---     ---     ---

  11      7.5     7.4     7.4       7.7     7.6     7.6       ---     ---     ---       ---     ---     ---
  12      7.5     7.4     7.5       7.7     7.6     7.6       ---     ---     ---       ---     ---     ---
  13      7.5     7.4     7.5       7.6     7.6     7.6       ---     ---     ---       ---     ---     ---
  14      7.6     7.5     7.5       7.7     7.5     7.6       ---     ---     ---       ---     ---     ---
  15      7.7     7.6     7.6       7.8     7.7     7.8       ---     ---     ---       ---     ---     ---

  16      7.7     7.3     7.6       ---     ---     ---       ---     ---     ---       ---     ---     ---
  17      7.5     6.8     7.1       ---     ---     ---       ---     ---     ---       ---     ---     ---
  18      7.4     6.7     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  19      7.5     7.4     7.4       ---     ---     ---       ---     ---     ---       ---     ---     ---
  20      7.5     7.4     7.5       ---     ---     ---       ---     ---     ---       ---     ---     ---

  21      7.5     7.4     7.5       ---     ---     ---       ---     ---     ---       ---     ---     ---
  22      7.5     6.8     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  23      6.9     6.8     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  24      7.0     6.8     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  25      6.9     6.9     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---

  26      6.9     6.9     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  27      7.0     6.9     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  28      7.1     6.9     7.0       ---     ---     ---       ---     ---     ---       ---     ---     ---
  29      7.1     6.8     7.0       ---     ---     ---       ---     ---     ---       ---     ---     ---
  30      6.9     6.7     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---
  31      6.9     6.7     6.9       ---     ---     ---       ---     ---     ---       ---     ---     ---

 MAX      7.8     7.7     7.7       7.8     7.7     7.8       ---     ---     ---       ---     ---     ---
 MIN      6.9     6.7     6.9       6.8     6.8     6.8       ---     ---     ---       ---     ---     ---


                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


            pH VALUES, WATER, WHOLE, FIELD, STANDARD UNITS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN  MEDIAN       MAX     MIN  MEDIAN       MAX     MIN  MEDIAN       MAX     MIN  MEDIAN

               FEBRUARY                   MARCH                     APRIL                       MAY

   1      ---     ---     ---       ---     ---     ---       8.2     7.6     7.8       ---     ---     ---
   2      ---     ---     ---       ---     ---     ---       8.3     7.7     7.8       ---     ---     ---
   3      ---     ---     ---       ---     ---     ---       8.3     7.7     7.9       ---     ---     ---
   4      ---     ---     ---       ---     ---     ---       8.0     7.8     7.9       ---     ---     ---
   5      ---     ---     ---       ---     ---     ---       ---     ---     ---       ---     ---     ---

   6      ---     ---     ---       ---     ---     ---       8.3     7.8     8.0       ---     ---     ---
   7      ---     ---     ---       ---     ---     ---       8.3     7.8     8.1       ---     ---     ---
   8      ---     ---     ---       ---     ---     ---       8.2     7.7     8.0       ---     ---     ---
   9      ---     ---     ---       ---     ---     ---       8.0     7.7     7.7       ---     ---     ---
  10      ---     ---     ---       ---     ---     ---       8.1     7.6     7.7       ---     ---     ---

  11      ---     ---     ---       ---     ---     ---       8.2     7.6     7.8       ---     ---     ---
  12      ---     ---     ---       ---     ---     ---       8.3     7.6     7.9       ---     ---     ---
  13      ---     ---     ---       ---     ---     ---       8.3     7.6     7.9       ---     ---     ---
  14      ---     ---     ---       ---     ---     ---       8.0     7.6     7.8       ---     ---     ---
  15      ---     ---     ---       ---     ---     ---       8.2     7.5     7.8       ---     ---     ---

  16      ---     ---     ---       ---     ---     ---       8.0     7.6     7.7       ---     ---     ---
  17      ---     ---     ---       ---     ---     ---       7.9     7.6     7.7       ---     ---     ---
  18      ---     ---     ---       ---     ---     ---       8.2     7.6     7.8       ---     ---     ---
  19      ---     ---     ---       ---     ---     ---       7.9     7.7     7.8       ---     ---     ---
  20      ---     ---     ---       ---     ---     ---       7.9     7.8     7.8       ---     ---     ---

  21      ---     ---     ---       ---     ---     ---       8.1     7.8     7.9       ---     ---     ---
  22      ---     ---     ---       ---     ---     ---       8.2     7.8     7.9       ---     ---     ---
  23      ---     ---     ---       ---     ---     ---       8.2     7.8     7.9       ---     ---     ---
  24      ---     ---     ---       ---     ---     ---       8.4     7.6     8.0       ---     ---     ---
  25      ---     ---     ---       ---     ---     ---       8.3     7.6     7.9       ---     ---     ---

  26      ---     ---     ---       ---     ---     ---       8.0     7.7     7.8       ---     ---     ---
  27      ---     ---     ---       8.1     7.7     7.8       ---     ---     ---       ---     ---     ---
  28      ---     ---     ---       8.2     7.7     7.8       ---     ---     ---       ---     ---     ---
  29      ---     ---     ---       8.3     7.7     7.8       ---     ---     ---       7.9     7.3     7.5
  30      ---     ---     ---       8.4     7.7     7.9       ---     ---     ---       8.0     7.4     7.5
  31      ---     ---     ---       8.4     7.7     7.9       ---     ---     ---       7.8     7.4     7.5

 MAX      ---     ---     ---       8.4     7.7     7.9       8.4     7.8     8.1       8.0     7.4     7.5
 MIN      ---     ---     ---       8.1     7.7     7.8       7.9     7.5     7.7       7.8     7.3     7.5


                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


            pH VALUES, WATER, WHOLE, FIELD, STANDARD UNITS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN  MEDIAN       MAX     MIN  MEDIAN       MAX     MIN  MEDIAN       MAX     MIN  MEDIAN

                 JUNE                     JULY                     AUGUST                    SEPTEMBER

   1      7.8     7.3     7.5       7.7     7.6     7.6       7.1     7.0     7.0       7.1     6.9     7.0
   2      7.6     7.3     7.4       7.6     7.5     7.6       7.1     7.0     7.1       7.0     6.9     7.0
   3      7.5     7.3     7.3       7.7     7.5     7.6       7.1     7.0     7.0       7.0     6.8     6.9
   4      7.4     7.2     7.3       7.7     7.5     7.6       7.1     7.0     7.0       6.9     6.8     6.9
   5      7.3     7.2     7.2       8.1     7.6     7.7       7.0     6.9     7.0       7.0     6.9     6.9

   6      7.3     7.2     7.2       8.3     7.6     7.8       7.0     6.9     6.9       7.0     6.9     6.9
   7      7.3     7.2     7.2       8.6     7.6     7.8       6.9     6.9     6.9       7.1     7.0     7.0
   8      7.3     7.2     7.2       8.3     7.6     7.8       6.9     6.8     6.9       7.0     6.8     7.0
   9      7.3     7.2     7.2       8.6     7.7     7.9       6.8     6.7     6.8       7.0     6.8     6.9
  10      7.3     7.2     7.2       8.6     7.7     8.0       6.8     6.7     6.8       7.2     6.8     7.0

  11      7.5     7.2     7.3       8.4     7.7     7.9       7.3     6.7     7.0       7.2     7.1     7.2
  12      ---     ---     ---       8.3     7.7     7.8       7.4     7.2     7.3       7.2     7.1     7.2
  13      7.7     7.6     7.7       8.1     7.5     7.7       7.3     7.2     7.2       7.2     7.0     7.1
  14      7.7     7.6     7.6       7.9     7.5     7.6       7.2     7.1     7.2       7.2     7.1     7.1
  15      7.6     7.5     7.5       7.7     7.4     7.5       7.2     7.0     7.1       7.2     7.0     7.1

  16      7.6     7.5     7.6       7.7     7.4     7.5       7.1     7.0     7.0       7.2     6.9     7.1
  17      7.5     7.5     7.5       7.8     7.4     7.6       7.1     6.9     7.0       7.7     7.0     7.4
  18      7.5     7.5     7.5       7.8     7.5     7.6       7.4     7.0     7.1       7.4     7.0     7.4
  19      7.6     7.4     7.5       7.7     7.5     7.5       7.6     7.1     7.6       7.1     6.5     6.9
  20      7.5     7.4     7.5       7.6     7.4     7.5       7.5     7.4     7.4       7.0     5.3     6.0

  21      7.7     7.5     7.6       7.6     7.4     7.5       7.4     7.2     7.3       5.3     4.9     5.1
  22      7.7     7.5     7.6       7.5     7.3     7.4       7.2     7.1     7.1       7.3     5.0     6.4
  23      7.7     7.4     7.5       7.4     7.2     7.3       7.1     6.9     7.0       ---     ---     ---
  24      8.0     7.5     7.6       7.4     7.3     7.3       7.0     6.9     6.9       ---     ---     ---
  25      8.3     7.5     7.7       7.5     7.3     7.3       7.2     6.9     7.0       ---     ---     ---

  26      8.0     7.4     7.7       7.3     7.2     7.3       7.2     7.1     7.2       ---     ---     ---
  27      7.8     7.5     7.6       7.3     7.2     7.2       7.3     7.2     7.3       ---     ---     ---
  28      7.7     7.5     7.7       7.3     7.2     7.2       7.3     7.1     7.2       ---     ---     ---
  29      7.6     7.5     7.5       7.3     6.9     7.1       7.2     7.1     7.2       ---     ---     ---
  30      7.7     7.5     7.6       7.0     6.8     6.9       7.2     7.1     7.1       ---     ---     ---
  31      ---     ---     ---       7.1     6.9     7.0       7.1     7.0     7.0       ---     ---     ---

 MAX      8.3     7.6     7.7       8.6     7.7     8.0       7.6     7.4     7.6       7.7     7.1     7.4
 MIN      7.3     7.2     7.2       7.0     6.8     6.9       6.8     6.7     6.8       5.3     4.9     5.1


                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


                  WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN

                OCTOBER                 NOVEMBER                  DECEMBER                    JANUARY

   1     16.0    14.0    15.5      14.0     9.0    11.0       7.0     6.0     6.5        .0      .0      .0
   2     15.0    12.5    14.0      12.5     7.0    10.0       6.0     5.0     5.5        .5      .0      .0
   3     14.5    12.0    13.0      12.0     5.5     8.5       5.5     4.0     4.5       2.0      .5     1.0
   4     16.5    13.0    14.5       9.5     4.5     7.0       6.0     5.5     6.0       4.0     2.0     3.0
   5     18.0    15.0    16.5      13.5     1.0     7.0       5.5     4.0     5.0       4.5     3.0     4.0

   6     19.0    15.5    17.0       9.0     2.5     6.0       4.0     2.0     3.0       6.5     4.5     5.5
   7     20.0    16.0    18.0       7.0     6.5     7.0       2.0     1.5     2.0       8.0     6.5     7.0
   8     20.0    16.5    18.0       7.5     7.0     7.0       2.5     1.5     2.0       9.0     8.0     9.0
   9     20.0    16.5    18.5       8.0     7.0     7.5       2.5     1.5     2.0       9.0     8.0     8.5
  10     20.5    18.0    19.0       8.0     7.0     7.5       4.0     2.5     3.0       8.0     6.0     7.0

  11     18.0    15.0    16.5       7.0     6.5     7.0       4.0     3.5     3.5       6.0     4.5     5.0
  12     17.5    12.5    15.0       6.5     5.0     6.0       4.0     3.5     4.0       4.5     4.0     4.5
  13     18.5    14.0    16.0       5.0     4.0     5.0       3.5     3.0     3.5       5.0     4.5     5.0
  14     16.5    13.5    15.5       5.5     5.0     5.0       3.5     2.5     3.0       4.5     3.0     3.5
  15     15.0    11.5    13.0       5.5     4.5     5.0       2.5     1.5     2.0       3.5     3.0     3.0

  16     13.0    10.0    11.5       5.0     4.0     4.5       1.5      .5     1.0       4.0     3.5     3.5
  17     19.0     9.0    12.5       4.0     2.5     3.5       1.0      .0      .5       4.0     3.5     4.0
  18     21.0     4.0    11.0       2.5     1.5     2.0       1.0      .0      .5       4.0     3.5     3.5
  19     13.0    10.0    11.5       3.0     1.0     2.0       1.5      .0      .5       3.5     3.0     3.5
  20     11.5     9.0    10.0       3.5     2.0     2.5       1.0      .0      .5       3.0     2.0     2.5

  21     10.0     7.5     9.0       4.0     2.5     3.5       2.0     1.0     1.5       2.0     1.0     1.5
  22     12.5     2.5     8.5       5.0     4.0     4.5       2.5     1.0     1.5       2.5     1.5     2.0
  23     12.5     7.5    11.0       5.5     5.0     5.0       3.5     2.5     3.0       4.0     2.5     3.0
  24     14.5     3.5     8.5       5.0     3.0     4.0       4.0     3.5     3.5       5.0     4.0     4.5
  25     12.0     8.0     9.5       3.0     2.0     2.5       5.0     4.0     4.5       4.5     3.5     4.0

  26     10.0     8.0     8.5       4.5     2.5     3.5       5.0     4.5     4.5       3.5     3.0     3.5
  27     11.5     3.5     9.0       4.5     3.5     4.0       4.5     3.5     4.0       ---     ---     ---
  28      8.0     1.5     5.0       5.0     3.5     4.0       3.5     2.5     3.0       3.5     3.5     3.5
  29      ---     ---     ---       6.5     5.0     6.0       2.5     1.0     1.5       4.5     3.5     4.0
  30     17.5     3.5    10.0       7.0     6.5     6.5       1.5     1.0     1.0       5.5     4.5     5.0
  31     20.0     4.5    11.5       ---     ---     ---       1.0      .0      .5       5.0     4.0     4.5

 MONTH   21.0     1.5    12.7      14.0     1.0     5.5       7.0      .0     2.8       9.0      .0     4.0

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


                  WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN

               FEBRUARY                   MARCH                     APRIL                       MAY

   1      4.5     2.5     3.5       7.5     6.5     7.0      18.5    16.5    17.5      14.5    14.0    14.0
   2      3.5     2.5     3.0       8.0     6.5     7.5      18.0    15.0    16.5      14.0    13.0    14.0
   3      3.5     3.0     3.0       7.5     6.0     6.5      16.5    13.0    14.5      13.0    12.5    12.5
   4      3.5     2.0     3.0       6.0     5.0     5.5      14.0    12.0    13.0      14.5    13.0    13.5
   5      2.0     1.0     1.5       5.5     4.5     5.0      12.0    10.0    10.5      15.5    14.5    15.0

   6      2.0     1.0     1.5       5.5     4.0     5.0      12.5     9.5    11.0      15.0    13.0    14.0
   7      3.0     2.0     2.5       6.5     5.0     6.0      13.0     9.5    11.0      15.5    14.0    14.5
   8      3.5     3.0     3.0       7.5     6.5     7.5      12.5    11.0    12.0      15.5    15.0    15.0
   9      4.0     2.5     3.0       8.5     7.5     8.0      14.0    12.5    13.5      16.0    14.0    15.0
  10      4.0     3.0     3.5       8.5     6.5     8.0      13.5    11.5    12.5      15.0    14.0    14.5

  11      5.0     3.5     4.5       6.5     3.5     5.0      13.5    10.5    12.0      15.5    15.0    15.5
  12      5.5     5.0     5.0       3.5     1.0     2.5      13.0    10.5    11.5      15.5    14.5    15.0
  13      5.5     4.5     5.0       2.5      .5     1.5      13.5    11.0    12.0      15.5    14.0    14.5
  14      4.5     4.0     4.5       3.5     1.5     2.5      14.0    12.5    13.5      17.5    15.5    16.5
  15      4.5     3.5     4.0       4.5     3.0     4.0      14.5    12.5    13.5      19.5    17.5    18.5

  16      4.5     3.5     4.0       4.5     3.0     4.0      15.0    14.0    14.5      21.5    19.5    20.5
  17      4.5     3.5     4.0       5.5     4.0     5.0      15.5    14.5    15.0      22.0    20.0    21.0
  18      6.0     4.5     5.5       6.0     5.0     5.5      15.0    12.0    13.5      23.5    20.0    22.0
  19      6.5     6.0     6.0       8.0     6.0     7.0      14.5    13.0    13.5      23.5    20.0    22.0
  20      6.0     6.0     6.0       8.5     8.0     8.0      13.0    10.5    11.5      24.0    21.0    22.5

  21      6.0     6.0     6.0       8.5     8.0     8.5      12.0    10.5    11.5      25.0    22.0    23.5
  22      6.0     5.5     5.5       8.0     5.5     7.0      13.0    11.5    12.0      24.5    19.5    22.0
  23      6.5     6.0     6.0       5.5     4.5     5.0      14.0    11.5    13.0      22.5    19.5    21.0
  24      6.0     5.0     5.5       6.0     5.5     5.5      13.5    11.5    12.5      22.5    19.0    20.5
  25      6.0     5.0     5.5       6.5     5.0     6.0      15.0    13.0    14.0      21.0    18.5    20.0

  26      6.5     5.5     6.0       8.5     6.0     7.5      16.0    14.5    15.5      20.0    17.5    18.5
  27      6.5     5.5     6.0      11.5     8.5    10.5      15.5    12.5    14.0      19.5    18.0    18.5
  28      7.0     6.0     7.0      14.0    11.5    13.0      14.5    11.5    13.0      22.0    19.5    21.0
  29      ---     ---     ---      15.5    14.0    15.0      14.5    11.5    13.0      24.0    20.0    22.0
  30      ---     ---     ---      16.5    14.5    15.5      14.5    13.0    14.0      25.0    21.5    23.0
  31      ---     ---     ---      18.0    15.5    16.5       ---     ---     ---      25.0    22.0    23.5

 MONTH    7.0     1.0     4.4      18.0      .5     7.1      18.5     9.5    13.2      25.0    12.5    18.2

                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued


                  WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

 DAY      MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN       MAX     MIN    MEAN

                 JUNE                     JULY                     AUGUST                    SEPTEMBER

   1     24.5    22.0    23.0      19.5    18.5    19.0      24.5    21.5    23.0      23.5    20.0    22.0
   2     24.0    21.0    22.5      21.0    18.5    19.5      24.5    20.5    23.0      23.5    20.5    22.0
   3     23.0    21.0    22.0      22.5    19.5    21.0      24.5    21.0    23.0      23.0    19.5    21.5
   4     21.5    19.0    20.5      22.0    20.5    21.0      25.0    21.0    23.5      22.5    19.5    21.0
   5     20.5    17.5    18.5      22.5    20.5    21.5      26.0    22.0    24.0      23.0    19.0    21.0

   6     18.0    16.0    17.0      23.5    20.5    22.0      26.0    22.0    24.5      23.5    18.5    21.5
   7     17.5    16.0    17.0      24.5    21.5    23.0      26.5    22.5    24.5      22.0    21.0    21.5
   8     18.5    15.0    17.0      25.0    23.0    24.0      26.5    23.0    25.0      21.0    18.0    19.5
   9     17.5    16.5    16.5      25.5    23.5    24.5      27.0    23.5    25.5      18.0    16.0    17.5
  10     19.5    16.5    17.5      26.0    23.5    24.5      26.0    24.0    24.5      19.0    15.5    17.0

  11     19.5    18.5    19.0      25.0    22.0    23.5      26.0    23.0    24.5      20.0    16.5    18.0
  12      ---     ---     ---      25.0    21.5    23.0      25.5    23.0    24.5      21.5    17.0    19.5
  13     21.0    19.5    20.0      25.5    21.5    23.5      25.5    23.0    24.5      22.5    18.5    20.5
  14     19.5    18.5    19.0      25.5    23.0    24.0      24.5    23.0    23.5      23.0    18.5    21.0
  15     19.5    18.0    19.0      24.5    23.5    24.0      25.0    22.0    23.5      24.0    20.0    22.0

  16     20.0    18.5    19.0      25.0    23.0    24.0      25.5    23.0    24.0      24.0    21.0    22.5
  17     19.5    18.5    19.0      26.0    23.5    24.5      25.5    23.5    24.5      22.5    21.0    22.0
  18     21.0    18.0    19.5      26.5    23.0    24.5      26.0    23.0    24.5      24.0    19.5    22.0
  19     21.0    19.5    20.0      26.5    23.0    25.0      25.0    22.5    23.5      24.0    20.5    22.0
  20     21.0    19.0    20.0      25.5    24.0    24.5      23.5    20.0    22.0      24.0    20.5    22.0

  21     23.0    19.5    21.0      27.0    23.5    25.0      24.0    20.5    22.5      22.5    21.0    21.5
  22     24.0    21.5    22.5      28.0    25.0    26.5      25.0    22.0    23.5      22.0    21.0    21.5
  23     24.5    22.5    23.5      27.5    25.5    26.0      26.5    23.0    25.0       ---     ---     ---
  24     26.5    22.5    24.5      26.0    24.0    25.0      25.0    22.5    24.0       ---     ---     ---
  25     27.0    23.5    25.5      25.5    21.5    24.0      24.5    21.5    23.0       ---     ---     ---

  26     26.5    25.0    25.5      25.5    22.0    24.0      26.0    23.0    24.5       ---     ---     ---
  27     25.0    23.0    24.0      25.5    21.5    23.5      25.5    22.5    24.0       ---     ---     ---
  28     23.0    20.0    21.0      25.0    22.0    24.0      25.5    22.5    24.0       ---     ---     ---
  29     20.0    19.0    19.5      25.0    22.5    24.0      24.0    23.0    23.5       ---     ---     ---
  30     20.0    19.0    19.5      26.0    23.5    24.5      24.5    21.5    23.0       ---     ---     ---
  31      ---     ---     ---      25.5    22.5    24.0      24.5    22.0    23.5       ---     ---     ---

 MONTH   27.0    15.0    20.4      28.0    18.5    23.6      27.0    20.0    23.9      24.0    15.5    20.9






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