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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 01591610 PATUXENT RIVER BELOW BRIGHTON DAM NEAR BRIGHTON,MD


Montgomery County, Maryland
Hydrologic Unit Code 02060006
Latitude  39°11'31.9", Longitude  77°00'15.8" NAD83
Drainage area 78.6  square miles
Gage datum 302.98 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 1980-10-01 -> 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 91 82 109 128 133 94 98 69 56 60 61 87
2 103 82 104 133 99 89 100 63 55 64 60 94
3 93 87 93 149 102 85 89 59 56 66 60 74
4 78 80 96 134 96 88 84 63 71 67 59 70
5 72 72 104 122 88 90 83 67 80 67 59 86
6 72 69 114 115 123 91 84 63 74 68 61 77
7 92 77 117 127 106 102 81 60 85 68 67 91
8 96 80 113 122 89 106 82 59 76 69 62 97
9 80 84 125 117 103 94 84 58 71 64 70 100
10 83 90 136 109 95 101 83 57 71 62 72 96
11 87 92 143 108 96 101 82 61 72 61 69 112
12 88 82 140 110 97 96 85 70 77 59 62 84
13 73 84 104 114 96 95 81 70 78 56 60 81
14 71 98 104 108 93 104 78 66 80 56 66 78
15 76 95 107 117 95 89 71 69 89 55 67 83
16 73 94 103 132 101 79 68 68 87 57 66 96
17 77 99 107 134 118 78 65 62 74 61 73 85
18 81 86 116 140 117 72 66 62 79 61 82 78
19 82 91 120 136 108 81 71 61 72 73 83 83
20 88 98 120 117 100 97 71 59 68 76 90 90
21 95 109 124 97 90 100 71 57 69 76 88 90
22 85 101 123 94 90 86 67 56 65 69 83 89
23 78 94 111 93 100 84 65 57 74 62 91 85
24 84 118 113 91 103 93 65 57 74 70 84 74
25 77 131 124 98 96 82 62 55 73 67 83 70
26 82 116 123 101 94 88 61 64 71 62 84 78
27 79 117 118 109 90 108 62 72 71 62 81 100
28 75 114 124 122 91 97 64 68 65 75 82 105
29 76 115 132 119 85 86 67 65 58 89 81 110
30 77   143 145 88 92 70 62 60 81 81 96
31 149   153   89   71 58   60   91