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USGS Surface-Water 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 01645000 SENECA CREEK AT DAWSONVILLE, MD


Montgomery County, Maryland
Hydrologic Unit Code 02070008
Latitude  39°07'41.1", Longitude  77°20'08.8" NAD83
Drainage area 101  square miles
Gage datum 213.31 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 1929-10-01 -> 2024-09-30)

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
1 164 125 158 196 153 105 96 85 82 126 96 112
2 154 140 149 210 133 128 96 75 60 84 73 120
3 150 160 168 183 137 135 115 65 58 68 78 99
4 137 160 173 166 137 138 89 110 83 57 69 115
5 122 146 178 173 138 134 84 67 91 56 83 140
6 116 140 176 158 191 121 88 79 165 59 76 120
7 121 168 180 157 166 151 73 65 101 58 82 123
8 116 141 156 152 145 112 120 76 159 69 104 116
9 142 118 151 161 133 100 92 73 111 80 100 126
10 130 121 152 167 125 147 82 77 72 91 90 112
11 116 134 154 138 129 117 81 65 113 68 82 183
12 126 147 165 139 162 106 74 89 156 69 93 124
13 124 162 162 175 138 134 82 109 73 62 105 132
14 149 174 175 154 124 125 84 67 87 75 91 133
15 123 157 156 172 128 96 81 66 67 68 84 129
16 121 145 149 190 197 90 75 62 81 77 103 148
17 106 140 161 175 155 96 70 68 79 63 103 122
18 115 145 150 139 142 146 74 82 73 77 82 138
19 170 162 163 133 169 122 74 65 72 109 84 109
20 166 149 161 151 123 118 78 82 54 76 97 105
21 144 144 218 145 135 131 150 73 59 73 91 134
22 120 158 198 146 131 218 104 77 80 63 107 120
23 115 177 207 136 149 123 97 94 110 104 91 128
24 153 187 194 131 147 97 90 88 86 81 90 120
25 167 199 153 137 130 85 73 61 96 85 120 133
26 187 197 175 154 138 129 66 73 151 83 99 162
27 136 151 170 165 136 129 67 89 92 101 98 133
28 151 147 189 149 140 117 92 65 82 99 166 118
29 127 142 191 127 132 86 96 59 71 110 135 124
30 131   184 156 112 100 77 53 86 126 115 135
31 155   184   115   88 52   80   122