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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 01658000 MATTAWOMAN CREEK NEAR POMONKEY, MD


Charles County, Maryland
Hydrologic Unit Code 02070011
Latitude  38°35'46.1", Longitude  77°03'21.7" NAD83
Drainage area 54.8  square miles
Gage datum 39.76 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 1949-10-01 -> 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 85 61 109 96 76 52 11 10 23 21 36 47
2 99 75 112 94 56 36 10 9 41 24 42 37
3 88 80 108 102 51 48 19 16 21 17 38 39
4 74 88 93 105 61 60 20 37 14 11 30 43
5 70 97 97 87 70 55 26 49 15 9.6 38 56
6 71 87 111 87 64 44 30 21 23 12 49 61
7 76 108 123 98 67 39 37 12 29 16 51 68
8 72 115 117 94 71 36 43 13 48 12 45 81
9 73 98 101 86 68 26 49 8.5 33 15 40 82
10 114 76 90 72 55 32 25 7.8 34 17 31 84
11 93 102 83 66 47 43 14 14 47 22 29 91
12 81 114 98 77 79 41 21 35 41 68 72 105
13 75 100 126 104 67 35 25 165 53 27 98 77
14 77 103 109 121 54 30 25 68 22 54 71 72
15 95 103 99 127 47 23 22 38 14 40 43 87
16 79 105 92 130 66 16 18 28 11 21 55 105
17 66 108 109 90 75 16 10 28 8.9 15 92 102
18 68 99 100 62 53 39 8.2 28 14 15 51 101
19 62 118 104 57 73 46 7.1 33 31 16 33 77
20 59 124 113 68 64 31 6.2 20 24 17 38 52
21 56 105 144 75 66 43 11 14 9.7 20 41 77
22 55 112 158 68 48 127 23 21 11 14 53 91
23 60 135 141 73 46 63 37 24 24 17 55 78
24 73 130 140 73 40 33 36 22 37 13 52 74
25 86 122 113 69 37 24 16 27 21 26 57 78
26 78 107 98 68 53 57 9.1 30 14 37 51 95
27 66 104 97 68 55 45 13 22 13 52 52 87
28 66 104 91 71 38 31 13 43 16 59 41 91
29 68 70 99 73 35 22 18 47 27 57 34 86
30 58   93 75 40 15 19 36 22 88 44 81
31 53   92   44   14 14   55   76