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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.


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 03031500 Allegheny River at Parker, PA


Armstrong County, Pennsylvania
Hydrologic Unit Code 05010006
Latitude  41°06'02", Longitude  79°40'53" NAD27
Drainage area 7,671  square miles
Gage datum 844.77 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 1932-10-01 -> 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 21,200 16,700 22,400 27,200 17,500 11,000 8,350 5,820 4,490 6,460 10,300 16,600
2 21,600 16,100 22,600 27,000 16,900 10,900 8,130 5,420 4,750 6,730 10,700 16,700
3 20,900 16,200 22,400 28,400 16,400 11,000 8,160 5,440 4,840 6,930 10,800 16,200
4 21,200 15,700 23,400 29,400 16,300 11,200 7,450 5,420 4,710 6,940 11,300 16,900
5 21,000 15,400 25,600 30,400 15,700 11,000 7,060 5,430 4,560 6,810 11,500 17,700
6 20,300 15,400 27,200 30,400 15,100 10,700 7,000 5,190 4,510 6,430 11,700 17,400
7 19,800 15,300 26,800 29,300 14,900 10,300 6,600 5,230 4,590 6,380 11,300 17,700
8 19,300 15,300 26,300 28,400 15,300 10,000 6,440 5,230 4,510 6,500 11,000 18,400
9 19,000 14,600 26,500 28,100 15,600 10,500 6,080 5,230 5,290 6,450 10,900 18,100
10 18,300 15,200 26,200 27,300 15,600 10,000 5,950 5,170 5,720 6,440 10,800 18,200
11 17,600 16,000 25,400 26,200 16,000 9,410 5,920 5,180 5,180 6,220 11,500 18,200
12 17,600 16,400 25,800 27,100 16,900 9,310 5,940 5,420 5,000 6,180 12,000 18,400
13 17,700 16,400 26,000 26,700 18,300 9,400 6,370 5,360 4,910 6,260 12,200 19,300
14 17,200 17,300 26,000 25,200 17,900 10,100 6,240 5,800 5,050 6,420 11,900 19,100
15 17,200 17,800 26,500 24,500 17,200 10,500 6,460 5,700 5,290 6,540 12,000 18,800
16 17,400 18,100 26,000 24,000 16,900 10,400 6,640 5,090 5,500 7,650 12,400 17,800
17 16,700 18,200 26,600 24,000 16,800 10,300 6,680 4,820 5,710 7,520 13,600 17,500
18 16,900 18,500 27,000 22,900 16,600 9,930 6,500 4,620 6,710 7,700 13,800 18,000
19 17,600 18,500 25,300 22,200 16,300 10,200 6,820 4,760 6,270 7,890 14,400 17,800
20 17,600 19,300 25,500 21,700 16,200 9,790 6,990 4,580 6,180 8,040 14,800 16,700
21 17,200 19,600 25,300 21,400 15,900 9,950 6,810 4,590 6,070 7,850 14,600 17,100
22 18,400 19,900 26,600 20,700 16,100 9,570 7,190 4,600 6,190 7,840 14,200 17,600
23 18,200 20,500 26,200 19,800 16,000 9,990 6,900 4,510 6,220 7,630 14,600 17,100
24 18,500 20,500 25,400 19,400 15,500 9,330 6,480 4,390 6,000 7,780 14,700 17,800
25 19,900 21,500 25,700 19,000 14,600 9,300 6,560 4,320 5,900 8,120 14,700 18,300
26 20,000 22,200 25,800 19,900 14,100 9,280 6,350 4,190 5,770 8,460 15,000 18,600
27 19,600 21,900 26,200 19,600 13,800 8,610 6,120 4,030 5,850 8,450 15,700 18,600
28 18,900 22,500 26,300 18,700 13,700 8,870 6,000 4,050 5,910 9,330 15,900 18,900
29 18,000 23,900 26,400 18,800 13,100 8,570 5,720 4,320 6,430 9,760 16,200 20,000
30 17,500   26,300 18,400 11,800 8,190 5,720 4,560 6,370 10,200 16,200 20,900
31 17,700   27,000   11,500   5,910 4,480   10,000   21,500