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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 -> 2020-09-30)

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 38,500 43,900 59,300 86,500 53,500 39,600 31,500 17,700 13,400 27,100 32,300 53,800
2 48,000 43,600 57,300 88,800 51,600 39,100 30,400 17,900 13,500 24,800 32,100 54,900
3 48,600 44,800 58,700 94,900 50,900 37,000 28,800 20,000 14,200 23,200 31,300 56,800
4 48,400 50,000 61,200 98,200 48,000 35,300 22,900 19,900 14,200 22,600 29,100 55,600
5 46,100 53,800 60,900 96,000 50,300 34,600 25,300 19,300 14,600 21,300 28,800 52,200
6 42,200 50,400 71,100 95,600 50,200 34,600 24,200 17,200 15,900 19,900 29,500 50,700
7 44,000 45,900 71,800 95,500 52,500 33,900 24,500 17,300 17,100 19,800 27,100 49,000
8 43,700 45,000 68,300 92,500 50,400 34,600 22,800 15,700 27,000 20,400 27,800 50,500
9 43,600 45,100 63,000 83,000 47,800 34,500 22,100 14,900 28,400 20,200 30,800 48,400
10 46,700 43,300 61,200 78,900 45,500 31,000 20,600 14,200 25,600 21,300 33,900 47,700
11 42,900 39,700 65,000 79,200 45,300 29,400 19,000 14,800 25,000 22,200 36,000 47,600
12 40,400 41,200 67,700 80,100 48,900 28,500 18,100 15,300 22,900 21,400 36,500 49,500
13 39,400 42,500 64,500 74,700 52,600 28,100 18,400 16,800 20,700 20,200 37,100 51,700
14 41,200 42,800 66,400 71,800 53,800 27,400 19,000 18,300 19,100 21,000 36,100 55,500
15 44,500 44,500 70,500 71,600 55,500 28,000 19,900 18,200 18,600 20,500 36,200 55,500
16 44,500 48,100 74,800 75,400 57,400 27,600 18,500 18,200 18,100 20,300 35,900 52,500
17 42,800 47,600 76,800 80,400 58,000 29,100 18,800 17,600 16,500 20,500 37,200 51,400
18 41,100 46,300 73,700 83,500 56,200 31,300 18,900 16,600 18,400 20,700 38,500 49,800
19 40,100 49,000 70,700 78,000 55,100 31,000 17,200 14,600 25,800 23,900 40,300 48,500
20 46,700 49,400 69,800 69,500 53,900 29,500 16,700 17,400 28,000 26,300 40,500 46,400
21 51,500 52,300 71,700 65,500 52,200 29,500 17,500 16,900 22,800 28,600 41,300 45,000
22 46,900 53,500 77,600 63,700 49,600 39,000 17,300 15,900 20,500 30,900 38,600 47,200
23 42,400 57,700 81,200 62,400 46,600 51,200 18,400 15,500 18,400 32,100 38,200 49,200
24 41,700 61,100 84,900 59,300 46,700 51,600 19,200 14,800 20,200 30,700 37,000 48,600
25 48,500 65,800 85,700 58,300 43,700 46,300 21,600 14,700 19,600 30,300 36,600 43,400
26 52,800 70,500 81,300 59,000 41,900 39,400 24,000 13,200 25,000 29,300 37,600 50,500
27 54,200 68,500 79,300 57,300 39,400 33,300 23,000 13,600 31,000 28,300 37,600 51,800
28 56,900 62,200 80,000 59,700 39,100 30,400 20,500 12,400 31,300 28,900 41,600 49,000
29 53,200 65,400 82,800 58,500 39,200 33,400 19,600 12,300 31,000 30,000 49,400 48,500
30 48,800   86,600 56,100 39,300 32,900 19,900 12,500 28,500 32,900 51,800 47,200
31 45,100   86,300   40,200   18,200 12,900   33,200   44,100