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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 01553500 West Branch Susquehanna River at Lewisburg, PA


Northumberland County, Pennsylvania
Hydrologic Unit Code 02050206
Latitude  40°58'03", Longitude  76°52'36" NAD27
Drainage area 6,847.00  square miles
Contributing drainage area 6,847.00  square miles
Gage datum 427.45 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 1939-10-01 -> 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 14,400 11,500 17,000 27,400 16,400 11,300 6,460 4,620 3,610 5,930 7,320 13,200
2 13,600 11,300 17,300 26,900 15,600 10,800 6,400 4,740 3,520 5,490 7,190 13,800
3 13,600 12,100 18,000 27,500 14,800 10,500 6,020 4,620 3,680 5,050 7,770 12,700
4 12,800 12,400 17,800 28,400 14,700 10,200 5,890 4,510 3,830 5,010 6,930 11,900
5 12,800 11,700 19,400 29,100 14,100 9,630 5,570 4,140 3,740 4,940 6,870 12,100
6 12,900 11,200 21,200 29,600 14,100 9,910 5,240 3,990 3,510 4,860 7,130 12,000
7 12,700 11,100 21,400 27,600 14,300 9,890 5,080 3,990 4,150 4,690 7,210 11,900
8 12,600 11,100 20,400 25,400 14,600 9,160 4,920 4,060 5,000 4,420 7,460 11,900
9 12,600 10,800 20,400 23,700 14,400 8,490 4,790 4,270 3,850 4,350 8,640 11,700
10 12,200 10,300 21,000 22,700 14,400 7,870 4,610 5,040 4,300 4,800 8,670 11,500
11 11,500 10,500 21,700 22,100 14,600 7,630 4,480 4,560 5,020 4,680 8,350 12,000
12 10,900 11,000 21,100 21,100 15,100 7,330 4,320 4,130 4,830 4,660 8,530 12,700
13 11,000 10,600 20,000 21,000 16,300 7,330 4,520 4,250 4,320 5,000 9,250 12,500
14 11,600 11,400 20,000 20,800 17,200 7,750 4,760 4,660 4,180 4,970 9,090 13,300
15 11,600 11,200 21,100 21,000 16,700 8,070 4,570 4,490 3,990 5,420 8,750 12,700
16 11,200 12,800 22,400 21,100 15,700 8,430 4,730 4,090 3,650 5,290 8,520 12,000
17 10,900 12,600 22,500 22,000 15,700 8,180 4,920 3,720 3,590 5,260 9,200 11,700
18 10,300 13,200 22,600 20,900 15,400 7,740 4,610 4,140 5,060 5,280 9,680 11,500
19 11,000 13,400 21,600 18,800 15,500 7,920 5,080 4,970 6,470 5,340 9,300 11,200
20 12,500 13,400 20,800 18,100 15,500 7,760 4,890 4,760 5,360 5,960 9,450 10,800
21 12,300 13,900 21,200 18,000 15,000 8,090 4,520 4,130 4,680 6,800 9,980 11,100
22 12,000 14,500 22,700 17,900 14,600 9,830 4,710 3,770 4,330 6,920 9,750 11,800
23 11,800 15,500 23,600 16,900 15,600 10,600 4,750 3,750 4,440 6,370 9,660 12,100
24 12,000 16,400 22,900 16,000 15,200 10,200 5,590 3,540 5,030 6,270 9,350 12,400
25 13,500 18,500 22,800 15,900 13,800 8,420 5,850 3,260 4,930 6,040 9,220 13,500
26 13,900 18,600 22,700 15,600 13,400 7,220 5,210 3,000 6,210 6,040 11,100 13,200
27 14,300 17,700 23,100 16,000 13,400 6,650 4,750 2,930 6,920 6,240 12,300 12,500
28 14,500 17,200 22,600 16,000 13,900 6,700 5,140 2,890 5,800 6,610 12,400 12,000
29 13,600 15,900 22,800 15,800 13,900 6,930 5,110 3,740 5,930 6,970 13,800 11,900
30 12,300   23,800 15,600 12,600 6,830 4,610 3,680 6,120 7,460 13,800 13,100
31 11,800   26,000   11,900   4,300 3,500   7,620   14,700