Allegheny River at New Kensington, PA

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

--------



                                               OHIO RIVER MAIN STEM

                                     03049500  ALLEGHENY RIVER AT NATRONA, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 40`36'55", long 79`43'07", Allegheny County, Hydrologic Unit 05010009, on right bank 520 ft
   upstream from dam at lock 4 at Natrona, 5.8 mi downstream from Kiskiminetas River, at mile 24.3.

DRAINAGE AREA.--11,410 mi2, approximately.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1938 to current year.

REVISED RECORDS.--WSP 1435:   1939.

GAGE.--Water-stage recorder and concrete dam control.  Datum of gage is 736.36 ft above sea level (U.S. Army Corps
   of Engineers bench mark).  Prior to Apr. 14, 1940, nonrecording gage and Apr. 15, 1940 to Oct. 22, 1990, water-
   stage recorder at same site at datum 0.75 ft higher.

REMARKS.--No estimated daily discharges.  Records good.  Flow regulated by Allegheny Reservoir, Chautauqua and
   Tionesta Lakes, Union City Reservoir, Woodcock Creek, East Branch Clarion River, Mahoning Creek, Crooked Creek,
   Yellow Creek, Conemaugh River, Loyalhanna Lake, and by 15 smaller reservoirs, combined capacity, excluding that
   of Chautauqua Lake, 2,069,000 acre-ft.  Slight diversion since 1952 from Beaver Run Reservoir into the
   Monongahela River Basin.  Several measurements of water temperature were made during the year.  U.S. Army Corps
   of Engineers satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Mar. 18, 1936 reached a stage of 32.06 ft, discharge, 365,000 ft3/s,
   determined by U.S. Army Corps of Engineers.


                 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     13400     7570    38100    20600    22800    28000    20600    36800     5890     7100     3460     4090
  2     17200     8710    39700    17600    20600    36400    20700    33400     7230     8190     3360     3720
  3     15200    14200    35600    17600    19700    35800    21200    32000     8150     8790     2550     3570
  4     13600    16400    31300    18000    18100    36000    20200    37700     6690     8350     3730     3120
  5     11800    15300    32400    26400    17100    32100    18900    33600     6510     7450     4080     3340

  6     10400    14300    30600    39000    16800    29300    16200    34600     6120     6440     3670     3320
  7      8920    13800    31200    43700    17300    26100    14600    37700     4520     5910     4060     3340
  8      8260    32000    29600    70500    16000    25600    13400    35900     4430     6530     4120     3550
  9      7830    39000    28000   119000    15300    25200    15000    37100     5070     5870     3520     3860
 10      6620    39300    27500   101000    14900    30100    27200    35700     4510     7850     4060     3740

 11      6190    41000    33700    75500    13700    33700    42400    32800     4400     7970     5050     3490
 12      5360    39100    36400    68600    14500    31300    41900    29700     5850     7560     5050     4140
 13      4810    38800    32600    63300    15600    28200    41400    37400     9440     6090     5230     3000
 14      4950    36600    29300    57600    18400    23800    37600    34100    11300     5260     4430     3430
 15      4870    35600    24700    56600    19100    21400    46300    26900     9960     3850     4530     3640

 16      4780    29800    21100    57600    17000    19300    45100    23200    11400     3630     4040     2830
 17      4810    26500    19100    54400    17000    18000    46800    27900    12700     3920     3670     3090
 18      4400    23800    18400    51200    19600    16300    45400    27800    13100     4380     4460     2860
 19      4260    19800    17600    46500    27800    18200    39600    25000    12500     4150     3280     2900
 20      4870    18000    15200    40100    32200    22400    51200    21400    11500     4270     4600     3180

 21      4580    19800    14000    36100    33500    29300    57400    16200    13400     4770     3900     4570
 22      4240    19300    14300    31800    33200    36100    56300    11700    14000     4730     4530     4510
 23      4110    23400    15100    31600    32000    36600    56300     9960    11100     4900     3710     3780
 24      3630    28100    16900    33200    31800    32600    51500     9110     8820     5260     3670     3700
 25      4820    28400    19000    35800    30600    30300    44800     8880     9410     6170     5120     3450

 26      5300    25100    23500    34200    29400    28700    42400     9200     7070     6250     4910     3910
 27      5910    24800    30300    31700    27900    26800    52200     8150     6730     5570     5070     3800
 28      7550    30300    30000    27900    25900    24700    45500     7040     6910     4980     4270     3680
 29      8510    36200    28200    25700      ---    23700    44200     5520     5290     4380     4120     3730
 30     10800    38800    25900    22300      ---    22200    41900     6010     6830     3910     4100     3680
 31      8600      ---    23600    22400      ---    22200      ---     5270      ---     3800     3610      ---

TOTAL  230580   783780   812900  1377500   617800   850400  1118200   737740   250830   178280   127960   107020
MEAN     7438    26130    26220    44440    22060    27430    37270    23800     8361     5751     4128     3567
MAX     17200    41000    39700   119000    33500    36600    57400    37700    14000     8790     5230     4570
MIN      3630     7570    14000    17600    13700    16300    13400     5270     4400     3630     2550     2830
CFSM      .65     2.29     2.30     3.89     1.93     2.40     3.27     2.09      .73      .50      .36      .31
IN.       .75     2.56     2.65     4.49     2.01     2.77     3.65     2.41      .82      .58      .42      .35


                                               OHIO RIVER MAIN STEM

                               03049500  ALLEGHENY RIVER AT NATRONA, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1987, BY WATER YEAR (WY)

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

MEAN     9871    16860    24240    24930    27360    38980    35590    23030    14780     9172     6659     6948
MAX     34470    45230    48690    68600    53390    87030    83780    48400    45820    34630    23020    22690
(WY)     1991     1986     1978     1952     1976     1945     1940     1943     1989     1972     1956     1990
MIN      1227     2686     2316     4520     7167    10410     9000     6129     3759     1944     1786     1444
(WY)     1964     1954     1961     1961     1963     1969     1946     1941     1991     1966     1962     1939

SUMMARY STATISTICS           FOR 1997 CALENDAR YEAR        FOR 1998 WATER YEAR           WATER YEARS 1939 - 1998

ANNUAL TOTAL                     7388630                    7192990
ANNUAL MEAN                        20240                      19710                      19830
HIGHEST ANNUAL MEAN                                                                      27810              1956
LOWEST ANNUAL MEAN                                                                       13540              1963
HIGHEST DAILY MEAN                 66800     Feb 28          119000     Jan  9          206000       Dec 31 1942
LOWEST DAILY MEAN                   3240     Aug  9,12a        2550     Aug  3             949       Oct 26 1963
ANNUAL SEVEN-DAY MINIMUM            3710     Aug  6            3110     Sep 13            1030       Oct 25 1963
INSTANTANEOUS PEAK FLOW                                      124000     Jan  9          238000       Dec 30 1942
INSTANTANEOUS PEAK STAGE                                         19.94  Jan  9             b27.46    Dec 30 1942
INSTANTANEOUS LOW FLOW                                                                     985       Oct 22 1963
ANNUAL RUNOFF (CFSM)                   1.77                       1.73                       1.74
ANNUAL RUNOFF (INCHES)                24.09                      23.45                      23.61
10 PERCENT EXCEEDS                 39500                      39200                      45200
50 PERCENT EXCEEDS                 17100                      16200                      13200
90 PERCENT EXCEEDS                  4490                       3790                       3160

   a  Also Sept. 3.
   b  Datum then in use.


                                               OHIO RIVER MAIN STEM

                                 03049625  ALLEGHENY RIVER AT NEW KENSINGTON, PA
                                   (National Water-Quality Assessment station)

                                              WATER-QUALITY RECORDS

LOCATION.--Lat 40`33'52", long 79`46'22", Allegheny County, Hydrologic Unit 05010009, at New Kensington highway
   bridge, 5.1 mi downstream from dam at Lock 4 at Natrona, 5.3 mi downstream from gaging station at Natrona,
   and at mile 19.0 upstream from mouth.

DRAINAGE AREA.--11,500 mi2.

PERIOD OF RECORD.--July 1972 to December 1973, October 1974 to current year.

PERIOD OF DAILY RECORD.--
   SPECIFIC CONDUCTANCE:  October 1974 to September 1981.
   WATER TEMPERATURE:  October 1974 to September 1981 and October 1996 to September 1998.
   SUSPENDED SEDIMENT DISCHARGES:  October 1976 to September 1979.

INSTRUMENTATION.--From October 1974 to September 1981, specific conductance and water temperature were once daily
   readings by an observer.  From October 1976 to September 1979, suspended-sediment samples were collected
   daily and more often during storm events by an observer.  From October 1996 to current year, daily records of
   water temperature were measured and collected at hourly intervals with an in-situ probe and electronic
   data logger.

REMARKS.--Records of discharge are given for 03049500 Allegheny River at Natrona, Pa.  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 data from the in-situ probes often times did not exactly
   agree with the water temperature of the monthly and storm samples because of the fixed location of the in-situ
   temperature 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.  Throughout
   the period of record, samples for this site have been collected at both the New Kensington highway bridge and
   the Hulton bridge in Oakmont (6.0 mi. downstream of the New Kensington highway bridge) due to factors such as
   bridge construction, highway detours, ice cover, etc.  From April 1996 to the current year, all samples have
   been collected at the Hulton bridge in Oakmont because this location is downstream of Deer Creek.  Deer Creek
   near Dorseyville, Pa., is an intensive fixed site for the NAWQA study unit.

EXTREMES FOR PERIOD OF DAILY RECORD.--
   SPECIFIC CONDUCTANCE:  Maximum, 440 micromhos, February 20, 1980; minimum 120 micromhos, March 11, 1979.
   WATER TEMPERATURE:  Maximum, 30.0`C, August 1, 2, 1975; minimum, 0.0`C, on many days during winter period.
   SEDIMENT CONCENTRATIONS: Maximum daily, 805 µg/L, January 2, 1979; minimum daily, 1 µg/L, August 4, 5, 1979.
   SEDIMENT DISCHARGES:  Maximum daily, 192,000 tons, January 2, 1979; minimum daily, 22 tons, August 5, 1979.

EXTREMES FOR CURRENT YEAR.--
   WATER TEMPERATURE:  Maximum, 28.0`C, August 4, 8-10, 17; minimum, 0.5`C, January 2.


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

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

  OCT
    21...       0830    5600      323      7.6     17.0      739      8.8      100     30        7.2     19
  NOV
    25...       0920   29000      256      7.3      5.0      745     12.5       83     23        6.4     12
  DEC
    10...       1000   27600      200      7.3      4.5      727     13.1       65     18        4.8      9.9
  JAN
    10...       1430   97300      125      7.3      7.5      740     12.4       39     11        3.0      5.0
    28...       1015   28100      208      7.2      3.5      736     13.1       63     17        4.8      9.6
  FEB
    20...       0935   32100      256      7.5      5.0      731     11.9       83     23        6.5     11
  MAR
    10...       0845   29100      225      7.3      6.0      737     12.5       76     21        6.0      9.7
  APR
    08...       0915   13800      243      7.5     12.0      731     10.3       81     22        6.2     11
  MAY
    20...       0900   21800      180      7.6     20.0      749      9.0       63     17        4.6      7.4
  JUN
    09...       0905    4690      315      7.6     21.0      754      8.4      110     30        8.7     15
  JUL
    30...       1010    4460      379      7.2     26.0      750      7.4      130     36       10       23
  AUG
    31...       1010    3980      362      7.6     26.0      750      7.3      120     33        9.4     22
  SEP
    17...       0915    3140      374      7.8     26.0      753      7.4      120     32        9.1     23


                                              ALLEGHENY RIVER BASIN

                              03049625  ALLEGHENY R AT NEW KENSINGTON, PA--Continued


                          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
    21...      2.2        50      67      20        .15     1.4       189      .015     .538     .068     .42
  NOV
    25...      1.8        33      54      17       <.10     4.4       149     <.010     .641    <.020     .14
  DEC
    10...      1.4        30      37      14       <.10     4.3       112     <.010     .539    <.020     .27
  JAN
    10...      1.5        14      23       8.1     <.10     4.8        84     <.010     .539    <.020     .64
    28...      1.3        23      41      14       <.10     4.9       123     <.010     .733     .029     .17
  FEB
    20...      1.4        31      54      16       <.10     4.9       148     <.010     .674     .048     .18
  MAR
    10...      1.3        24      50      14       <.10     4.9       124     <.010     .509     .034     .12
  APR
    08...      1.4        27      55      14       <.10     3.4       145     <.010     .488     .041     .24
  MAY
    20...      1.2        31      35      10       <.10     3.9        91      .014     .422     .046     .23
  JUN
    09...      1.8        31      85      15        .12     2.9       194      .022     .570     .058     .21
  JUL
    30...      2.3        38     100      21        .12     3.0       236      .013     .501     .032     .23
  AUG
    31...      2.0        33      91      22        .14     3.0       215      .018     .631     .046     .22
  SEP
    17...      2.2        41      90      24        .15     2.6       225      .023     .556     .079     .23




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

  OCT
    21...      <.20     <.010    <.010     .011      4.1      4.3     3.0       .50       7      96
  NOV
    25...       .13     <.010    <.010     .014     40      241       2.0      <.20      14      84
  DEC
    10...      <.10      .033    <.010     .023     45      121       1.9       .40      94      58
  JAN
    10...       .18      .151    <.010    <.010     84      220       2.9      2.6      169      88
    28...       .11     <.010    <.010    <.010     31      197       1.7       .40       9      94
  FEB
    20...      <.10      .021    <.010     .017     35      253       1.9       .40      18      74
  MAR
    10...       .11     <.010    <.010     .012     40      258       1.5       .30      10      86
  APR
    08...       .10      .020     .014    <.010     44      234        --       .40       6      76
  MAY
    20...       .12      .042    <.010    <.010     33       90       1.9       .40      12      82
  JUN
    09...       .18     <.010    <.010    <.010    <10       59       1.6       .30       7      79
  JUL
    30...       .17      .012    <.010    <.010    <10       <4.0     1.7       .30       4      60
  AUG
    31...      <.10     <.010    <.010    <.010    <10       <4.0     1.9       .20       3      63
  SEP
    17...       .22      .017     .016     .015    <10        1.5     1.8       .30       5      75

                                              ALLEGHENY RIVER BASIN

                              03049625  ALLEGHENY R AT NEW KENSINGTON, PA--Continued

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
         17...       0915    3140      15      <1.0      <1        54     <1.0     <1.0     <1.0     <1.0




                                          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
             17...       1.3     <1.0       1.5     2.2      2.2      <1      <1.0     <1.0      3.3


                                              ALLEGHENY RIVER BASIN

                            03049625  ALLEGHENY RIVER AT NEW KENSINGTON, 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     19.5    18.0    19.0      11.0    10.5    10.5       5.5     5.0     5.5       1.5     1.0     1.0
   2     18.0    17.5    18.0      10.5    10.0    10.5       5.5     5.5     5.5       1.0      .5      .5
   3     17.5    17.0    17.5      10.5     9.0     9.5       5.5     5.5     5.5       1.0     1.0     1.0
   4     17.5    17.0    17.0       9.5     8.5     9.0       5.5     5.5     5.5       1.0     1.0     1.0
   5     18.0    17.5    17.5       9.0     8.5     9.0       5.5     4.5     5.0       1.5     1.0     1.0

   6     18.5    17.5    18.0       8.5     8.5     8.5       4.5     4.0     4.5       2.0     1.5     1.5
   7     18.5    17.5    18.0       8.5     8.5     8.5       4.0     4.0     4.0       4.5     2.0     3.5
   8     18.5    18.0    18.0       8.5     8.0     8.0       4.0     3.5     3.5       5.5     4.5     5.0
   9     19.0    18.0    18.5       8.0     8.0     8.0       3.5     2.5     3.0       7.0     5.5     6.0
  10     19.5    18.5    19.0       8.0     7.5     8.0       3.0     2.5     3.0       7.5     7.0     7.0

  11     19.5    18.5    19.0       8.0     7.5     7.5       3.5     3.0     3.0       7.0     6.0     6.5
  12     20.0    19.0    19.0       7.5     7.0     7.5       3.5     3.5     3.5       7.0     5.0     5.5
  13     20.0    19.0    19.5       7.0     7.0     7.0       3.5     3.0     3.5       5.0     4.5     4.5
  14     20.0    19.0    19.5       7.0     7.0     7.0       3.5     3.0     3.0       4.5     3.5     4.0
  15     20.0    19.0    19.5       7.0     6.5     6.5       3.0     2.5     3.0       4.5     3.5     3.5

  16     19.0    19.0    19.0       6.5     5.5     6.0       3.0     2.5     2.5       3.5     3.5     3.5
  17     19.0    18.0    18.5       5.5     4.5     5.0       2.5     2.5     2.5       3.5     3.0     3.0
  18     18.5    18.0    18.0       ---     ---     ---       2.5     2.0     2.0       3.5     3.0     3.0
  19     18.0    17.5    17.5       ---     ---     ---       2.0     1.5     2.0       3.5     3.0     3.0
  20     17.5    16.5    17.5       4.0     4.0     4.0       2.0     1.5     2.0       4.0     2.5     3.0

  21     17.0    16.5    17.0       4.0     4.0     4.0       2.0     2.0     2.0       3.0     2.0     2.5
  22     16.5    15.5    16.0       4.0     4.0     4.0       2.0     2.0     2.0       2.5     2.0     2.0
  23     16.0    15.0    15.5       4.0     4.0     4.0       2.5     2.0     2.0       2.0     2.0     2.0
  24     15.5    15.0    15.5       4.0     4.0     4.0       2.5     2.5     2.5       2.0     2.0     2.0
  25     15.5    14.5    15.0       4.0     4.0     4.0       3.0     2.5     3.0       2.5     2.0     2.0

  26     15.0    13.5    14.0       4.0     4.0     4.0       3.0     3.0     3.0       2.5     2.5     2.5
  27     14.0    13.0    13.5       4.0     4.0     4.0       3.0     3.0     3.0       3.0     2.5     2.5
  28     13.5    12.0    12.5       4.0     3.5     3.5       3.5     3.0     3.0       2.5     2.5     2.5
  29     12.0    11.5    11.5       4.0     3.5     4.0       3.0     2.5     3.0       3.5     2.5     2.5
  30     11.5    11.0    11.5       5.0     4.0     4.5       2.5     2.0     2.5       3.0     3.0     3.0
  31     11.5    11.0    11.0       ---     ---     ---       2.0     1.5     2.0       3.5     3.0     3.0

 MONTH   20.0    11.0    16.8      11.0     3.5     6.4       5.5     1.5     3.2       7.5      .5     3.0

                                              ALLEGHENY RIVER BASIN

                            03049625  ALLEGHENY RIVER AT NEW KENSINGTON, 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      3.5     3.0     3.0       5.0     4.5     5.0      13.5    12.5    13.0      12.0    12.0    12.0
   2      3.5     3.0     3.0       5.5     5.0     5.5      14.0    13.5    13.5      12.5    12.0    12.5
   3      3.5     3.0     3.0       6.0     5.5     5.5      14.0    13.5    13.5      13.0    12.5    12.5
   4      3.0     2.5     3.0       5.5     5.5     5.5      14.0    13.5    13.5      13.5    13.0    13.0
   5      2.5     2.0     2.5       5.5     5.0     5.5      13.5    13.0    13.0      14.0    13.5    13.5

   6      2.5     2.0     2.5       5.5     4.5     5.0      13.0    12.0    12.5      15.0    14.0    14.0
   7      3.0     2.0     2.5       5.0     4.5     5.0      12.5    11.5    12.0      15.5    15.0    15.0
   8      3.5     2.5     2.5       5.0     5.0     5.0      12.0    11.5    12.0      15.5    15.0    15.5
   9      3.5     2.5     3.0       5.5     5.0     5.5      11.5    11.5    11.5      16.0    15.0    15.5
  10      3.5     3.0     3.0       6.0     5.5     5.5      11.5    11.0    11.5      16.5    16.0    16.0

  11      3.5     3.0     3.5       5.5     4.5     5.5      11.5    10.5    11.0      16.5    15.5    16.0
  12      3.5     3.5     3.5       5.0     4.0     4.5      11.5    10.5    11.0      16.0    15.5    15.5
  13      3.5     3.5     3.5       4.5     3.5     4.0      11.0    10.0    10.5      16.0    15.0    15.5
  14      3.5     3.5     3.5       3.5     2.5     3.0      11.0    10.0    10.5      16.5    15.5    15.5
  15      4.0     3.5     3.5       3.0     2.5     2.5      11.0    10.5    11.0      17.5    16.0    16.0

  16      4.0     3.5     3.5       3.0     2.5     2.5      11.5    11.0    11.5      18.0    17.0    17.5
  17      4.0     4.0     4.0       3.0     2.5     2.5      12.0    11.5    11.5      19.0    17.5    18.0
  18      4.0     4.0     4.0       3.5     3.0     3.0      12.0    11.5    11.5      20.0    19.0    19.0
  19      4.0     4.0     4.0       4.0     3.5     3.5      12.0    11.5    11.5      21.5    20.0    20.5
  20      4.0     4.0     4.0       4.5     4.0     4.5      11.5    11.0    11.0      21.5    20.5    21.0

  21      4.5     4.0     4.0       5.0     4.5     5.0      11.0    10.5    11.0      21.0    20.0    20.5
  22      5.0     4.5     4.5       5.5     5.0     5.5      11.0    10.5    10.5      20.5    19.5    20.0
  23      5.0     4.5     4.5       5.5     5.0     5.5      11.0    11.0    11.0      20.5    19.5    20.0
  24      4.5     4.5     4.5       5.5     4.5     5.0      12.0    11.0    11.5      20.5    19.5    20.0
  25      4.5     4.5     4.5       5.0     4.0     4.5      12.5    11.5    11.5      20.5    20.0    20.0

  26      4.5     4.0     4.5       5.0     4.5     4.5      12.5    12.0    12.0      20.5    20.0    20.0
  27      4.5     4.5     4.5       6.5     5.0     5.5      12.5    11.5    12.0      21.0    20.0    20.5
  28      5.0     4.5     5.0       7.5     6.5     7.0      12.0    11.0    11.5      21.5    20.5    21.0
  29      ---     ---     ---       9.0     7.5     8.5      12.0    11.0    11.0      22.5    21.0    21.5
  30      ---     ---     ---      11.0     9.0    10.0      12.0    11.0    11.5      22.5    21.0    21.5
  31      ---     ---     ---      12.5    11.0    12.0       ---     ---     ---      22.5    21.5    22.0

 MONTH    5.0     2.0     3.6      12.5     2.5     5.2      14.0    10.0    11.7      22.5    12.0    17.5

                                              ALLEGHENY RIVER BASIN

                            03049625  ALLEGHENY RIVER AT NEW KENSINGTON, 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     22.5    21.5    22.0      25.5    24.5    25.0      26.5    25.0    25.5      26.5    25.5    26.0
   2     23.0    22.0    22.5      26.0    25.0    25.5      26.5    25.5    26.0      26.5    26.0    26.0
   3     22.5    22.0    22.5      26.0    25.0    25.5      27.0    26.0    26.5      26.0    25.0    25.5
   4     22.5    22.0    22.0      26.0    25.5    25.5      28.0    25.5    26.5      26.0    25.5    25.5
   5     22.0    21.5    22.0      26.0    25.0    25.5      26.5    25.0    26.0      26.0    25.0    25.5

   6     22.0    21.5    22.0      26.0    25.0    25.5      27.0    26.0    26.5      26.0    25.0    25.5
   7     22.0    21.0    21.0      26.5    25.5    26.0      27.5    26.5    27.0      25.5    24.5    25.0
   8     21.5    20.5    21.0      27.0    25.5    26.5      28.0    27.0    27.5      25.0    24.0    24.5
   9     21.5    21.0    21.0      26.5    25.5    26.0      28.0    27.5    27.5      24.0    23.0    23.5
  10     21.0    20.5    21.0      27.0    25.5    26.0      28.0    26.5    28.0      24.0    23.0    23.5

  11     21.5    20.5    21.0      26.0    25.0    25.0      26.5    26.0    26.0      23.5    22.5    23.0
  12     21.5    20.5    21.0      25.5    24.5    25.0      26.5    25.5    26.0      23.5    22.5    23.0
  13     21.5    20.0    21.0      25.5    25.0    25.0      27.5    26.5    27.0      24.0    22.5    23.0
  14     21.0    20.5    20.5      26.5    25.5    26.0      27.5    26.5    27.0      25.0    24.0    24.0
  15     21.0    20.5    20.5      26.5    26.0    26.0      27.0    26.5    26.5      25.0    24.0    24.5

  16     21.5    20.5    21.0      27.0    26.0    26.5      27.5    27.0    27.0      25.0    23.5    24.5
  17     21.0    20.0    20.5      27.5    26.5    27.0      28.0    26.5    27.0      25.0    24.0    24.5
  18     21.5    20.5    20.5      27.5    26.5    26.5      27.5    26.5    27.5      25.0    24.0    24.5
  19     22.0    21.5    21.5      27.5    25.5    26.5      27.0    26.5    26.5      25.5    24.5    25.0
  20     22.5    21.5    22.0      26.5    25.5    26.0      27.0    25.5    26.0      25.0    24.0    24.5

  21     22.5    21.5    22.0      27.0    26.0    27.0      27.0    25.5    26.5      24.5    24.0    24.0
  22     23.0    22.0    22.5      27.5    26.0    27.0      26.5    26.0    26.5      24.5    24.0    24.5
  23     22.5    22.0    22.0      27.5    26.0    26.5      27.0    26.0    26.5      24.0    23.0    23.5
  24     23.0    22.0    22.5      26.5    25.5    26.0      27.0    26.0    26.5      24.0    22.5    23.5
  25     24.0    23.0    23.5      27.0    26.0    26.5      26.5    25.5    26.0      23.5    23.0    23.0

  26     24.5    24.0    24.0      27.0    26.5    26.5      26.0    25.0    25.5      23.5    22.5    23.0
  27     25.0    24.5    25.0      27.0    26.0    26.5      26.5    25.5    26.0      23.5    23.0    23.5
  28     25.5    25.0    25.0      27.0    26.5    26.5      26.5    25.5    26.0      24.0    22.5    23.0
  29     25.5    25.0    25.5      27.0    26.0    26.5      26.5    26.0    26.0      24.0    23.0    23.5
  30     26.0    25.5    25.5      27.0    25.5    26.0      26.0    25.5    26.0      23.5    23.0    23.0
  31      ---     ---     ---      26.0    25.5    25.5      26.0    25.5    26.0       ---     ---     ---

 MONTH   26.0    20.0    22.1      27.5    24.5    26.0      28.0    25.0    26.5      26.5    22.5    24.2





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