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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 01473500 Schuylkill River at Norristown, PA


Montgomery County, Pennsylvania
Hydrologic Unit Code 02040203
Latitude  40°06'56", Longitude  75°21'22" NAD83
Drainage area 1,760  square miles
Contributing drainage area 1,760  square miles
Gage datum 51 feet above NGVD29
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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 1927-10-01 -> 2023-09-30)

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 3,900 2,430 4,010 4,580 5,860 2,250 2,590 1,620 2,250 3,540 3,500 3,710
2 3,900 2,620 4,830 4,690 3,950 2,770 2,390 1,790 4,760 2,750 3,210 3,580
3 3,600 2,690 4,520 4,990 3,690 2,690 2,070 2,010 2,670 2,650 3,680 3,560
4 3,430 3,670 3,960 4,190 3,570 2,840 1,810 3,710 1,850 2,080 2,810 3,000
5 3,140 3,940 4,140 3,670 3,460 2,680 1,730 3,430 1,580 1,980 2,510 2,830
6 3,470 3,690 4,700 3,520 3,350 2,790 2,280 2,200 2,160 1,870 2,320 2,590
7 3,690 3,910 4,490 3,940 3,840 2,660 1,860 1,760 3,200 1,700 2,730 3,010
8 3,390 4,060 4,510 4,440 3,530 2,740 1,870 1,990 3,080 2,100 2,590 3,920
9 3,150 3,520 4,330 3,750 3,300 2,290 1,950 1,710 2,840 2,770 2,290 3,610
10 3,020 2,950 4,250 3,310 3,210 2,500 2,700 1,770 2,700 1,640 2,630 3,360
11 3,020 3,090 5,020 3,170 2,980 3,090 2,450 1,830 2,420 1,620 2,030 3,660
12 3,550 2,840 4,710 3,800 2,890 2,540 2,980 1,770 2,270 2,030 2,010 4,670
13 3,270 3,350 5,020 4,400 3,220 2,570 2,720 3,140 2,070 2,160 2,450 3,730
14 3,650 3,390 5,140 4,030 3,780 2,790 2,910 3,320 1,810 1,880 2,160 3,870
15 3,380 3,570 4,540 4,680 3,100 2,320 3,330 2,770 2,420 1,870 1,900 3,490
16 2,950 3,430 4,250 6,230 3,420 2,150 2,260 2,010 2,100 1,890 2,320 4,060
17 2,820 3,470 3,800 5,950 3,770 2,040 1,800 1,700 1,600 2,130 3,190 4,060
18 2,880 3,470 3,510 5,000 3,160 1,890 1,830 1,710 2,530 2,140 3,660 3,420
19 2,940 3,320 3,790 4,440 3,280 2,010 1,770 1,900 2,980 2,540 3,400 3,000
20 3,270 3,200 4,520 4,080 3,340 2,760 1,480 1,570 1,990 2,680 3,520 2,920
21 2,690 3,100 5,180 3,470 3,380 3,240 1,350 1,540 1,620 2,140 2,730 3,580
22 2,260 3,180 5,340 3,320 2,830 2,500 1,670 2,350 1,440 1,830 2,480 3,260
23 2,400 3,800 4,630 3,710 2,700 2,100 2,750 2,150 1,850 1,800 3,290 3,670
24 3,300 4,090 4,440 3,610 2,470 2,330 2,660 1,710 2,720 1,720 2,920 4,170
25 4,010 4,870 4,120 3,170 2,500 2,140 2,700 1,340 1,960 1,920 3,170 5,220
26 3,980 4,520 3,520 3,230 2,440 2,430 2,170 1,220 1,790 1,910 2,670 4,880
27 3,070 4,870 3,590 4,010 2,590 3,350 1,860 1,310 1,610 2,690 2,890 4,350
28 2,750 4,180 4,330 3,730 2,440 4,360 3,180 3,550 2,590 3,500 3,280 4,130
29 2,380 3,580 5,100 3,810 2,460 3,720 2,000 2,250 3,390 3,520 3,060 3,930
30 2,170   4,730 4,120 2,770 2,830 1,560 1,920 2,390 4,250 3,270 3,620
31 2,830   4,630   2,510   1,450 1,650   3,460   3,300