Allegheny River at New Kensington, PA

1997 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 1996 TO SEPTEMBER 1997
                                               DAILY MEAN VALUES

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

  1     39200    30800    39400    26600    25600    58100    33600    20000    25300    10800     4580     4990
  2     34400    27800    57800    23600    23200    52900    31100    17600    27000    11800     4450     4990
  3     31200    25500    54100    21300    21700    55700    27700    16700    35000    15000     4010     3240
  4     28000    23100    53200    22300    23100    51600    25600    17400    41600    10200     3730     4240
  5     23900    20700    54200    22400    34600    46800    23900    19300    39100     8480     4310     4240

  6     20100    19600    50800    25700    46700    63800    21800    18200    35400     7640     4040     4000
  7     17900    21800    45400    29600    46400    66600    18900    20300    32500     7000     3660     4930
  8     13300    30100    38300    26200    43000    61400    16500    20200    27500     5800     4220     4070
  9     12200    62000    34200    24400    37700    61600    16500    20900    25200     6340     3240     3720
 10     11300    64900    33100    22500    28700    59500    15300    20600    23800     5700     3800     4770

 11     10600    62400    30800    20900    26400    62200    12500    20600    21000     6980     3800     4770
 12     11700    63000    41900    16700    21900    59100    12000    20600    18100     9500     3240     6540
 13     11000    64000    45200    11100    18500    53400    18700    20400    19400    11300     4400     5300
 14     10400    58700    48600    11200    16100    51600    25800    19300    19200    10900     5600     5380
 15     10100    55900    47200     9320    17000    62600    24000    18200    17400     8540     6190     5160

 16      9140    48600    41900    10800    14800    56300    21900    17100    12900     6650     6190     4780
 17      7870    41400    40800    10200    12900    49600    19500    16400    14300     6010     7440     4630
 18      7610    36600    39600     8370    13200    45000    19200    16200    13200     6230    13000     3680
 19     16100    34600    36900     7140    16300    41600    17600    19400    16500     5620    11300     4480
 20     41600    33300    32800     7640    24800    38400    15800    29300    17800     4510    10500     4850

 21     45300    31600    27200     8970    37500    35400    14500    38500    17800     3860    11300     5690
 22     46200    28200    25600     9820    50100    33700    13600    36200    16000     5140    e9000     4430
 23     53300    26400    21800    14100    63200    33700    14100    33000    13700     4820    e7000     5000
 24     52900    23100    21800    19900    56500    29500    13800    31000    12000     4480    e5800     4790
 25     50400    20500    27500    24500    53000    27900    15200    39400    11000     4520    e5200     4210

 26     47300    24400    31600    30200    48400    30400    16100    43400    11100     4860    e6600     3900
 27     41700    36900    30300    31300    46000    39100    14900    36200    16800     3530    e6200     4120
 28     37200    35700    29000    31700    66800    40600    14700    41800    16600     3950    e5600     4050
 29     33500    37300    27100    29700      ---    37000    20400    43100    14800     4500     6810     6090
 30     32300    33500    28600    28000      ---    33700    20100    36900    12300     4640     4990    11800
 31     31900      ---    28100    27100      ---    33300      ---    30100      ---     3870     3800      ---

TOTAL  839620  1122400  1164800   613260   934100  1472100   575300   798300   624300   213170   184000   146840
MEAN    27080    37410    37570    19780    33360    47490    19180    25750    20810     6876     5935     4895
MAX     53300    64900    57800    31700    66800    66600    33600    43400    41600    15000    13000    11800
MIN      7610    19600    21800     7140    12900    27900    12000    16200    11000     3530     3240     3240
CFSM     2.37     3.28     3.29     1.73     2.92     4.16     1.68     2.26     1.82      .60      .52      .43
IN.      2.74     3.66     3.80     2.00     3.05     4.80     1.88     2.60     2.04      .69      .60      .48


                                               OHIO RIVER MAIN STEM

                               03049500  ALLEGHENY RIVER AT NATRONA, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1997, BY WATER YEAR (WY)

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

MEAN     9912    16700    24210    24600    27450    39180    35560    23010    14890     9230     6702     7005
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 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1939 - 1997

ANNUAL TOTAL                    10536350                    8688190
ANNUAL MEAN                        28790                      23800                      19830
HIGHEST ANNUAL MEAN                                                                      27810              1956
LOWEST ANNUAL MEAN                                                                       13540              1963
HIGHEST DAILY MEAN                166000     Jan 20           66800     Feb 28          206000       Dec 31 1942
LOWEST DAILY MEAN                   3640     Sep  3            3240     Aug  9,12a         949       Oct 26 1963
ANNUAL SEVEN-DAY MINIMUM            4050     Aug 29            3710     Aug  6            1030       Oct 25 1963
INSTANTANEOUS PEAK FLOW                                       72800     Feb 28          238000       Dec 30 1942
INSTANTANEOUS PEAK STAGE                                         16.49  Feb 28             b27.46    Dec 30 1942
INSTANTANEOUS LOW FLOW                                                                     985       Oct 22 1963
ANNUAL RUNOFF (CFSM)                   2.52                       2.09                       1.74
ANNUAL RUNOFF (INCHES)                34.35                      28.33                      23.61
10 PERCENT EXCEEDS                 56500                      49000                      45300
50 PERCENT EXCEEDS                 27000                      20500                      13200
90 PERCENT EXCEEDS                  7220                       4640                       3130

   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 current year.
  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.  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 mg/L, January 2, 1979; minimum daily, 1 mg/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, 28.5`C, July 20, 21; minimum, 0.0`C, on many days during winter period.


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

                            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
       02...       0915  34200       177      7.4     15.5      740      9.4       61       17      4.6      6.8
     NOV
       06...       0830  19800       210      7.5      8.0      744     11.3       69       19      5.2      8.6
     DEC
       10...       0915  33600       193      7.4      4.0      736     13.4       66       18      5.2      8.0
     JAN
       27...       0800  30600       262      7.2      0.5      743     14.8       80       22      6.0     14
     FEB
       13...       0930  20100       220      6.9      2.0      750     14.0       70       19      5.5     10
     MAR
       04...       0830  51800       187      7.0      6.0      737     12.4       54       15      4.1      7.2
     APR
       16...       0900  22600       237      7.5      8.0      740     11.8       81       22      6.5      9.9
     MAY
       29...       0845  44800       168      6.9     15.0      743      9.5       57       16      4.3      8.1
     JUN
       27...       0915  16100       233      7.9     25.0      741      7.3       77       21      5.9      9.7
     JUL
       28...       0845   3920       324      7.6     27.0      740      7.4      110       31      7.8     17
     AUG
       26...       0845   6620       392      7.5     22.0      741      9.0      150       40     11       20
     SEP
       09...       0840   2650       365      7.7     22.5      736      8.3      110       31      8.6     19


                                              ALLEGHENY RIVER BASIN

                            03049625  ALLEGHENY RIVER AT NEW KENSINGTON, PA--Continued


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

                           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
       02...        1.6      24      38        8.2      0.10    5.6     103     <0.010    0.560    0.030     0.30
     NOV
       06...        1.6      39      46       10        --      5.1     122      0.020    0.530    0.080     0.20
     DEC
       10...        1.2      24      42       10       <0.10    5.3     111      0.020    0.640    0.200    <0.20
     JAN
       27...        1.5      41      51       20       <0.10    4.9     149      0.010    0.690    0.090    <0.20
     FEB
       13...        1.2      34      48       15        0.10    5.3     124      0.020    0.810    0.050    <0.20
     MAR
       04...        1.2      19      31       12       <0.10    4.5      97     <0.010    0.620    0.030     0.30
     APR
       16...        1.5      28      56       14        0.12    3.3     144     <0.010    0.340    0.030    <0.20
     MAY
       29...        1.6      18      38        8.7     <0.10    4.4     104     <0.010    0.721    0.037     0.56
     JUN
       27...        1.8      33      51       12       <0.10    3.0     142     <0.010    0.437    0.025     0.25
     JUL
       28...        1.8      38      82       17        0.18    3.1     196      0.014    0.592    0.041    <0.20
     AUG
       26...        2.5      32     110       20        0.11    4.7     250      0.022    0.926    0.043     0.27
     SEP
       09...        1.9      50      83       19        0.11    2.3     212      0.010    0.586    0.025     0.27



                  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
        02...       <0.20    0.040   <0.010   <0.010     30      77        3.4      1.5        42       49
      NOV
        06...       <0.20    0.010   <0.010   <0.010     37     240        2.3      0.40       --       --
      DEC
        10...       <0.20   <0.010   <0.010   <0.010     45     210        1.7      0.40        4       83
      JAN
        27...       <0.20    0.020   <0.010   <0.010     37     250        2.1      0.60       14       82
      FEB
        13...       <0.20    0.020   <0.010   <0.010     75     230        1.4      0.20        2       70
      MAR
        04...       <0.20    0.060   <0.010   <0.010     28     140        1.9      1.1        32       89
      APR
        16...       <0.20   <0.010   <0.010   <0.010     51     300        2.1      0.60        9       85
      MAY
        29...       <0.20    0.130   <0.010   <0.010     28     222        3.8      1.7       105       80
      JUN
        27...       <0.20   <0.010   <0.010   <0.010     16       6.4      2.8      0.70       12       81
      JUL
        28...        0.27   <0.010    0.011   <0.010      3.5    <1.0      2.3      0.30        8       44
      AUG
        26...       <0.20   <0.010   <0.010   <0.010      6.6   164        1.9      0.40       10       83
      SEP
        09...       <0.20    0.021   <0.010   <0.010      6.8     1.2      1.9     <0.20        5       76





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