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USGS Daily Statistics for Maryland

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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 01578310 SUSQUEHANNA RIVER AT CONOWINGO, MD


Harford County, Maryland
Hydrologic Unit Code 02050306
Latitude  39°39'28.4", Longitude  76°10'28.0" NAD83
Drainage area 27,100  square miles
Gage datum 4.16 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 1967-10-01 -> 2021-09-30)

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 39,300 43,500 59,600 86,000 55,100 39,500 31,100 17,600 13,200 26,600 32,100 53,400
2 48,200 43,100 58,000 88,200 54,900 38,800 30,100 17,800 13,300 24,500 32,100 54,400
3 49,000 44,200 59,600 94,100 54,300 36,800 28,500 19,700 14,000 22,900 31,000 56,400
4 48,800 49,300 61,800 97,300 50,300 35,100 22,800 19,800 14,200 22,200 28,800 55,200
5 46,500 53,200 61,300 95,200 51,600 34,600 25,000 19,300 14,600 21,000 28,400 51,600
6 42,700 49,700 71,200 94,700 51,100 34,600 23,900 17,000 15,800 19,700 29,200 50,200
7 44,500 45,400 71,700 94,600 53,100 33,900 24,200 17,200 17,000 19,600 26,700 48,700
8 44,000 44,800 68,300 90,500 51,000 34,500 22,500 16,000 26,600 20,200 27,400 50,000
9 43,700 44,700 62,900 81,300 48,100 34,200 22,000 15,000 28,000 19,900 30,400 48,000
10 46,600 42,900 60,900 77,400 45,800 31,000 20,400 14,200 25,200 21,000 33,400 47,300
11 42,900 39,200 64,600 77,600 45,500 29,200 19,000 14,800 24,700 22,000 35,500 47,000
12 40,500 40,900 67,400 78,900 48,900 28,400 17,900 15,400 22,500 21,200 36,200 48,800
13 39,200 42,000 64,600 74,200 52,300 28,100 18,300 16,700 20,400 20,000 36,800 51,000
14 41,100 42,200 67,300 71,400 53,500 27,300 18,900 18,100 18,900 20,800 35,700 54,900
15 44,200 44,000 71,600 71,400 55,200 28,000 19,800 18,000 18,300 20,200 35,800 54,900
16 44,200 47,500 75,300 74,600 57,100 27,400 18,300 18,100 17,900 20,000 35,700 52,000
17 42,500 47,400 76,900 79,300 57,500 28,900 18,600 17,400 16,300 20,200 36,900 50,800
18 41,200 46,100 73,900 82,200 55,900 31,000 18,900 16,400 18,100 20,400 38,200 49,300
19 40,200 48,700 70,700 76,900 55,200 30,800 17,200 14,500 25,400 23,500 39,900 47,700
20 46,700 49,000 69,900 68,800 53,700 29,200 16,600 17,200 27,600 25,900 40,000 45,700
21 51,100 51,700 72,000 65,100 52,000 29,200 17,300 16,700 22,500 28,100 40,700 44,400
22 46,500 53,000 77,700 63,400 49,300 38,500 17,100 15,700 20,200 30,400 38,000 46,700
23 42,200 57,000 81,200 61,700 46,500 50,600 18,300 15,400 18,100 31,700 37,900 48,700
24 41,600 60,400 84,500 58,700 46,400 50,900 19,000 14,600 19,900 30,200 36,600 48,000
25 48,200 65,100 85,500 57,400 43,500 45,600 21,500 14,500 19,300 29,800 36,200 44,100
26 52,300 69,900 81,000 58,200 41,700 39,000 23,800 13,000 24,600 29,300 37,000 54,400
27 53,600 68,000 79,100 56,800 39,200 33,000 22,600 13,400 30,500 27,900 37,100 55,800
28 56,400 62,100 79,900 58,800 39,200 30,100 20,300 12,300 30,800 28,500 41,200 52,100
29 52,600 65,400 82,500 58,200 38,900 32,900 19,400 12,200 30,500 29,700 48,700 50,300
30 48,200   86,300 56,000 39,000 32,500 19,600 12,500 28,100 32,500 51,300 48,300
31 44,600   85,800   40,000   18,000 12,800   32,800   44,800