Basic Fixed-Site Water-Quality Records
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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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