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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


! Statistics pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline.

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 03049500 Allegheny River at Natrona, PA


Allegheny County, Pennsylvania
Hydrologic Unit Code 05010009
Latitude  40°36'55", Longitude  79°43'07" NAD27
Drainage area 11,410  square miles
Gage datum 735.8 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1938-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 29,100 25,200 33,700 39,200 25,100 16,900 12,400 8,550 6,560 8,940 13,600 23,000
2 28,700 24,300 33,900 38,400 24,300 16,700 12,400 7,970 6,780 9,290 14,000 23,200
3 28,500 24,500 34,500 40,900 23,800 16,600 12,100 7,990 6,960 9,600 14,200 22,600
4 29,300 24,400 35,300 41,700 23,400 16,400 11,300 7,850 7,060 9,690 14,600 23,300
5 29,900 24,200 36,600 42,700 22,800 16,600 10,400 8,010 6,780 9,580 14,600 24,200
6 29,400 24,400 37,800 43,800 22,300 16,100 10,200 7,800 6,450 9,250 15,100 24,000
7 28,800 24,400 38,500 41,800 22,100 15,100 9,750 7,560 6,480 9,020 14,800 24,100
8 27,500 24,100 38,100 40,600 22,100 14,600 9,430 7,660 6,350 9,020 14,600 24,800
9 26,300 23,100 39,000 39,900 22,800 14,700 9,280 7,630 7,030 8,930 14,400 24,900
10 24,900 22,400 39,000 39,500 23,200 14,700 8,960 7,620 8,240 8,920 14,200 25,000
11 23,800 24,000 38,100 37,800 23,600 13,800 8,740 7,620 7,760 8,690 15,100 25,300
12 23,900 24,400 37,700 38,100 24,300 13,700 8,850 7,720 7,400 8,500 15,800 25,900
13 25,300 24,600 38,300 38,000 26,600 14,000 9,250 7,840 7,390 8,420 16,300 26,800
14 24,400 26,000 38,100 35,800 26,400 14,700 9,280 7,730 7,520 8,610 16,000 27,200
15 23,900 26,200 38,400 35,100 25,300 15,200 9,000 8,240 7,700 9,080 15,900 27,100
16 23,700 26,700 38,200 34,200 25,000 15,100 9,280 7,670 7,770 10,500 16,100 25,700
17 23,100 27,300 38,100 33,800 24,800 15,000 9,250 7,110 7,880 10,300 17,800 24,700
18 23,100 28,200 38,500 33,100 24,800 14,900 9,230 6,850 9,420 10,600 18,200 24,800
19 24,200 28,300 36,500 32,300 24,200 15,000 9,140 6,530 9,080 10,800 18,700 24,600
20 24,700 28,600 36,600 32,100 23,700 15,100 10,100 6,760 8,740 11,100 19,300 23,400
21 24,200 29,300 36,700 30,900 23,200 14,700 9,670 6,710 8,620 10,900 19,100 23,400
22 24,400 29,600 38,000 29,600 23,100 14,400 10,000 6,740 8,480 10,700 19,000 24,200
23 24,300 31,300 38,500 28,100 23,100 14,800 10,300 6,570 8,720 10,500 19,100 23,600
24 24,800 31,900 37,500 27,400 22,400 14,300 9,950 6,400 8,330 10,300 19,200 24,100
25 25,800 32,500 36,800 27,200 21,200 13,600 9,630 6,350 8,080 10,600 19,500 25,000
26 26,700 32,700 36,400 27,600 20,700 14,000 8,980 6,180 7,950 11,000 20,000 25,500
27 27,000 32,200 36,700 27,500 20,200 12,800 8,670 5,980 8,030 11,400 21,100 25,500
28 27,100 33,200 36,600 26,500 19,700 12,900 8,590 5,860 8,280 12,000 21,800 26,100
29 26,400 32,200 37,400 26,500 19,300 13,000 8,350 6,180 8,720 12,700 22,200 27,300
30 25,600   37,400 26,400 18,000 12,400 8,050 6,400 9,050 13,300 22,600 29,100
31 26,500   38,900   17,400   8,280 6,460   13,400   30,200