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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
1 165 124 159 194 153 105 96 85 82 126 97 113
2 154 140 148 207 133 128 96 75 60 84 73 121
3 151 160 168 177 137 135 115 65 58 68 79 98
4 138 160 173 162 137 138 89 110 83 57 69 115
5 122 146 177 171 138 134 84 67 91 56 84 140
6 115 140 175 157 191 121 88 79 165 59 77 120
7 119 169 180 156 166 151 73 65 101 58 82 123
8 115 141 156 152 145 112 120 76 159 69 104 117
9 135 118 148 161 133 100 92 73 111 80 101 126
10 119 121 146 167 125 147 82 77 72 91 91 111
11 113 135 153 137 129 117 81 65 113 68 82 177
12 125 148 165 139 162 106 74 89 156 69 94 123
13 117 159 162 175 138 134 82 109 73 62 106 132
14 147 173 175 155 124 125 84 67 87 75 91 133
15 122 156 156 173 128 96 81 66 67 68 85 129
16 120 145 149 191 197 90 75 62 81 77 104 149
17 106 140 161 176 155 96 70 68 79 63 104 122
18 115 145 150 139 142 146 74 82 73 77 83 123
19 171 162 163 133 169 122 74 65 72 109 84 106
20 166 150 161 151 123 118 78 82 54 76 98 104
21 145 144 219 145 135 131 150 73 59 73 91 133
22 121 158 199 146 131 218 104 77 80 63 103 120
23 115 177 205 136 149 123 97 94 110 104 91 128
24 153 187 194 131 147 97 90 88 86 81 89 120
25 166 200 152 137 130 85 73 61 96 85 120 133
26 187 198 175 154 138 129 66 73 151 84 100 163
27 136 151 170 165 136 129 67 89 92 101 98 132
28 140 148 189 149 140 117 92 65 82 99 167 115
29 123 142 191 127 132 86 96 59 71 111 135 124
30 129   185 156 112 100 77 53 86 127 115 135
31 155   184   115   88 52   80   122