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USGS Daily Statistics for the Nation

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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 01580000 DEER CREEK AT ROCKS, MD


Harford County, Maryland
Hydrologic Unit Code 02050306
Latitude  39°37'47.9", Longitude  76°24'11.9" NAD83
Drainage area 94.4  square miles
Gage datum 249.59 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 1926-10-01 -> 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
1 162 135 156 186 162 136 112 95 103 107 105 114
2 147 143 156 191 149 153 102 99 83 103 98 108
3 163 165 167 180 155 131 111 93 76 85 105 107
4 147 153 176 167 161 139 110 117 85 80 92 122
5 125 142 194 186 158 151 126 94 79 76 90 126
6 130 149 177 187 189 140 100 83 112 79 85 117
7 123 185 166 175 164 121 115 87 101 73 91 117
8 119 154 158 173 155 123 117 82 107 105 109 122
9 155 132 165 167 155 115 101 93 93 80 105 120
10 138 135 175 170 144 123 108 107 92 86 99 112
11 124 142 185 153 143 120 103 88 101 90 90 139
12 124 166 175 161 156 120 104 100 97 79 98 131
13 119 174 179 174 157 138 138 133 85 75 113 129
14 151 173 192 164 145 138 117 86 85 80 105 128
15 138 157 175 183 145 122 115 80 76 77 99 118
16 129 153 157 200 158 109 94 76 103 80 132 133
17 119 152 156 176 154 112 87 109 96 81 119 126
18 136 145 153 156 151 113 97 109 95 86 99 134
19 166 156 165 155 152 118 101 88 79 99 94 110
20 168 150 161 167 143 117 92 79 74 87 104 116
21 157 155 195 151 141 118 101 81 79 99 103 143
22 131 167 195 166 144 185 106 92 92 90 104 117
23 124 171 181 157 150 136 130 136 100 102 105 120
24 157 192 182 156 148 126 104 103 84 86 97 119
25 181 183 160 156 139 110 99 88 97 85 124 135
26 200 203 173 174 150 111 94 82 99 99 108 161
27 152 183 172 171 132 129 93 93 102 95 101 124
28 151 172 179 173 145 127 101 92 98 99 135 133
29 135 158 171 152 139 115 87 78 89 114 126 124
30 137   176 176 137 108 92 70 116 110 119 128
31 139   171   133   93 87   88   117