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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 01554000 Susquehanna River at Sunbury, PA


Snyder County, Pennsylvania
Hydrologic Unit Code 02050301
Latitude  40°50'04", Longitude  76°49'37" NAD27
Drainage area 18,300  square miles
Gage datum 407.90 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 1937-10-01 -> 2024-09-30)

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 36,000 28,500 41,900 69,800 40,900 25,800 17,100 10,600 8,720 14,100 21,100 32,300
2 34,800 27,600 42,300 70,900 40,700 25,300 16,900 10,900 9,510 13,300 19,900 32,800
3 34,300 27,800 42,900 72,300 38,300 24,600 16,100 10,600 9,580 12,600 19,900 32,400
4 32,100 30,900 42,500 74,000 36,800 24,200 15,000 10,600 9,710 12,500 19,400 31,000
5 30,900 29,900 45,500 75,600 36,400 23,400 14,000 10,000 9,670 12,300 18,700 31,400
6 31,300 27,900 49,900 78,100 36,000 22,600 13,000 9,580 8,800 11,800 18,300 31,200
7 31,400 27,400 52,500 76,800 36,100 22,800 12,400 9,330 9,690 11,400 18,400 31,000
8 31,100 27,700 51,900 71,300 36,300 22,100 12,100 9,320 12,200 11,300 18,500 30,900
9 30,900 26,600 50,700 65,900 35,500 20,200 11,800 9,490 11,800 11,100 20,700 30,900
10 30,600 25,400 51,800 62,100 34,400 18,700 11,600 10,800 11,600 12,400 23,000 30,600
11 29,000 25,500 52,900 60,300 35,200 17,700 11,400 10,900 12,000 12,500 22,600 31,000
12 27,300 27,400 52,600 57,700 36,500 17,300 10,800 10,400 11,100 12,200 22,100 33,100
13 27,000 27,100 51,100 56,000 38,500 17,200 10,700 10,200 10,400 12,200 22,700 33,600
14 28,200 28,100 50,700 55,100 39,600 17,800 11,400 10,800 10,100 12,000 23,300 34,600
15 29,000 30,300 52,600 55,500 39,100 18,500 11,000 11,100 9,470 12,500 23,200 33,900
16 27,900 30,800 55,700 56,000 37,400 20,000 10,800 10,800 8,770 13,600 22,700 32,200
17 26,900 31,000 56,500 56,800 36,800 19,900 11,200 9,650 8,610 14,100 23,900 30,500
18 25,800 32,200 57,200 55,400 35,800 18,800 10,600 9,510 10,500 14,400 25,300 29,800
19 26,200 33,400 56,400 50,800 34,800 18,700 10,600 11,300 14,700 14,900 24,600 30,600
20 28,900 33,500 53,900 47,800 34,700 17,800 10,900 11,200 13,800 15,800 24,300 29,800
21 29,000 34,600 53,700 47,300 34,400 18,000 10,200 10,200 11,700 17,300 24,800 28,800
22 29,000 36,500 56,500 47,100 34,700 21,400 10,400 9,250 10,800 18,000 24,700 29,700
23 28,600 38,100 59,800 45,700 36,200 23,900 10,800 9,220 11,100 17,200 24,700 30,400
24 28,400 39,600 59,900 43,300 34,300 23,000 12,100 8,880 12,000 17,200 24,200 31,000
25 32,400 42,700 58,000 42,500 32,300 20,900 13,300 8,070 12,100 17,100 23,900 33,000
26 34,200 44,700 57,600 43,300 30,800 18,100 13,200 7,510 14,500 16,600 25,900 33,700
27 36,800 43,500 58,200 43,300 30,100 16,100 11,700 7,200 16,900 17,000 28,100 32,600
28 37,200 41,900 59,900 42,400 30,700 17,500 11,300 6,990 16,600 18,200 29,800 30,900
29 34,300 41,000 61,700 41,600 30,700 18,500 11,500 7,680 15,800 19,900 32,900 30,100
30 30,900   63,000 40,200 29,800 18,000 10,800 8,410 14,900 21,800 33,000 31,900
31 28,800   66,300   27,500   10,200 8,350   22,100   35,500