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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 -> 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 3,870 2,490 4,040 4,550 5,730 2,220 2,560 1,590 2,200 3,390 3,340 3,560
2 3,840 2,620 4,950 4,830 3,890 2,720 2,350 1,760 4,620 2,650 3,060 3,440
3 3,540 2,670 4,710 5,690 3,630 2,640 2,030 1,970 2,600 2,550 3,490 3,440
4 3,370 3,570 4,040 5,090 3,520 2,780 1,780 3,610 1,810 2,020 2,680 2,950
5 3,080 3,810 4,200 4,130 3,410 2,630 1,710 3,340 1,550 1,910 2,390 2,760
6 3,370 3,570 4,800 3,810 3,320 2,790 2,250 2,160 2,110 1,810 2,220 2,520
7 3,660 3,760 4,600 4,100 3,790 2,640 1,830 1,860 3,120 1,650 2,600 2,910
8 3,370 3,900 4,560 4,520 3,490 2,700 1,840 2,030 3,000 2,050 2,470 3,740
9 3,290 3,390 4,370 3,820 3,270 2,250 1,910 1,830 2,770 2,680 2,190 3,450
10 4,260 2,860 4,760 3,380 3,180 2,450 2,630 1,980 2,630 1,610 2,510 3,240
11 3,570 2,990 5,250 3,220 2,990 3,020 2,400 1,900 2,360 1,590 1,940 4,020
12 3,760 2,750 4,840 3,840 2,890 2,490 2,910 1,790 2,220 1,970 1,930 4,780
13 3,610 3,250 5,080 4,430 3,210 2,510 2,660 3,090 2,020 2,090 2,330 3,770
14 3,930 3,330 5,150 4,050 3,750 2,730 2,860 3,260 1,770 1,830 2,060 3,820
15 3,510 3,480 4,550 4,670 3,100 2,280 3,260 2,720 2,350 1,850 1,820 3,430
16 3,020 3,410 4,250 6,160 3,430 2,110 2,220 1,980 2,040 1,870 2,200 3,950
17 2,870 3,570 3,800 5,870 3,740 2,000 1,790 1,680 1,570 2,080 3,020 3,950
18 2,880 3,460 3,510 4,940 3,140 1,850 1,840 1,690 2,460 2,080 3,460 4,520
19 2,920 3,270 3,770 4,400 3,250 1,970 1,760 1,870 2,900 2,460 3,220 3,700
20 3,210 3,140 4,460 4,050 3,310 2,690 1,470 1,580 1,940 2,590 3,330 3,220
21 2,650 3,020 5,100 3,450 3,330 3,150 1,330 1,530 1,580 2,090 2,610 3,700
22 2,240 3,090 5,250 3,300 2,800 2,440 1,690 2,310 1,400 1,800 2,550 3,330
23 2,350 3,680 4,940 3,670 2,670 2,050 2,710 2,110 1,800 1,760 3,260 3,640
24 3,190 3,960 4,680 3,570 2,450 2,270 2,610 1,680 2,640 1,680 2,850 4,060
25 3,920 4,680 4,190 3,150 2,480 2,090 2,640 1,320 2,080 1,860 3,060 5,020
26 3,970 4,450 3,570 3,210 2,410 2,370 2,120 1,210 1,850 1,850 2,580 4,700
27 3,080 4,790 3,630 3,950 2,560 3,260 1,820 1,290 1,640 2,580 2,920 4,200
28 2,960 4,160 4,350 3,680 2,420 4,240 3,090 3,460 2,530 3,330 3,220 4,870
29 2,630 3,860 5,060 3,760 2,440 3,620 1,960 2,200 3,270 3,350 2,990 4,050
30 2,350   4,690 4,050 2,750 2,780 1,530 1,880 2,330 4,030 3,160 3,670
31 2,900   4,580   2,480   1,420 1,620   3,300   3,320