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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


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 01474000 Wissahickon Creek at Mouth, Philadelphia, PA


Philadelphia County, Pennsylvania
Hydrologic Unit Code 02040203
Latitude  40°00'55", Longitude  75°12'26" NAD27
Drainage area 64.0  square miles
Gage datum 26.41 feet above NGVD29
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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 1965-10-01 -> 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
1 132 100 146 170 160 97 71 111 73 116 66 124
2 118 135 159 223 108 98 68 158 190 72 65 107
3 118 161 129 180 118 96 76 85 63 70 81 126
4 118 132 145 157 114 113 70 160 61 61 64 97
5 109 131 137 171 105 104 74 103 45 73 77 111
6 96 122 142 139 129 94 73 73 111 53 79 102
7 103 113 188 143 129 119 71 74 98 55 73 112
8 126 114 143 146 125 101 62 69 177 73 131 116
9 122 91 132 138 128 92 66 76 81 81 98 147
10 136 99 168 172 122 109 92 97 68 91 78 103
11 104 115 154 114 117 108 71 74 72 69 81 209
12 131 121 125 124 123 116 89 81 71 63 97 143
13 96 174 177 145 128 139 181 116 106 48 102 118
14 128 127 192 125 107 108 103 97 82 57 85 166
15 109 124 145 195 96 81 81 62 79 76 73 114
16 98 141 123 277 149 89 79 48 150 66 97 165
17 94 111 143 171 118 167 70 65 118 63 98 149
18 132 116 141 116 113 93 72 58 90 57 68 161
19 150 110 166 122 130 109 78 76 73 124 71 93
20 176 111 174 126 105 131 67 78 88 88 107 83
21 143 124 202 107 89 92 97 87 79 72 84 200
22 83 138 224 108 98 98 64 111 91 72 79 125
23 111 143 149 120 99 90 87 94 93 61 101 131
24 153 175 169 118 132 93 96 65 92 69 73 133
25 198 187 146 133 99 73 94 60 86 95 109 172
26 196 134 122 129 105 73 81 60 84 75 116 143
27 138 114 143 134 109 88 118 97 132 116 119 118
28 123 117 164 117 109 129 149 245 135 131 145 124
29 111 115 185 108 136 111 85 77 158 114 104 123
30 105   179 131 147 83 84 60 82 94 120 95
31 101   192   85   83 51   71   93