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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 01589352 GWYNNS FALLS AT WASHINGTON BLVD AT BALTIMORE, MD


Baltimore City, Maryland
Hydrologic Unit Code 02060003
Latitude  39°16'19.4", Longitude  76°39'00.3" NAD83
Drainage area 65.9  square miles
Gage datum 6.68 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 1998-10-01 -> 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
1 132 109 93 131 110 95 76 76 86 87 75 108
2 99 98 161 177 85 84 73 80 59 78 57 64
3 120 137 108 175 72 134 65 84 53 51 53 82
4 84 127 103 97 91 103 66 123 69 71 59 47
5 62 118 106 77 123 118 69 49 96 47 68 65
6 81 122 139 125 104 95 108 54 114 40 74 68
7 85 105 95 95 118 140 160 77 227 80 51 102
8 73 66 79 92 69 75 147 72 179 227 72 73
9 142 59 98 91 80 74 70 70 173 53 45 137
10 119 60 193 68 83 117 53 55 77 83 51 96
11 91 97 106 88 122 151 65 64 118 128 68 208
12 95 90 104 102 166 77 66 180 100 76 104 99
13 79 127 155 144 113 93 62 131 77 47 89 84
14 129 83 112 68 67 75 87 90 45 68 47 144
15 77 70 77 184 91 53 54 93 41 76 65 148
16 86 118 126 137 191 68 70 51 171 86 157 188
17 86 89 79 89 89 54 59 67 55 73 95 177
18 96 90 76 93 88 68 57 110 129 73 49 144
19 78 86 88 82 100 107 49 50 68 66 70 62
20 105 70 123 136 73 107 48 59 37 62 65 65
21 56 93 194 93 73 72 106 80 43 44 64 111
22 50 147 139 105 82 68 197 85 60 64 102 72
23 77 128 162 91 83 92 165 48 173 36 88 181
24 130 139 134 75 82 72 230 55 71 39 106 112
25 128 119 86 116 80 113 129 38 87 69 95 166
26 67 77 79 117 127 146 73 175 117 73 98 170
27 59 87 96 72 195 130 130 79 207 167 94 113
28 87 107 153 115 119 92 98 145 143 120 69 96
29 56 128 106 84 86 55 118 60 103 325 62 100
30 82   166 315 59 80 141 42 142 166 95 67
31 124   115   52   84 58   77   68