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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 01480870 East Branch Brandywine Creek below Downingtown, PA


Chester County, Pennsylvania
Hydrologic Unit Code 02040205
Latitude  39°58'07", Longitude  75°40'25" NAD27
Drainage area 89.9  square miles
Gage datum 195 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 1973-10-01 -> 2023-09-30)

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
1 187 163 185 253 215 145 132 91 163 139 107 173
2 161 174 221 258 185 147 119 91 139 101 95 157
3 174 209 179 249 187 138 117 79 98 102 125 161
4 186 201 190 214 186 151 101 138 86 88 102 143
5 158 190 198 226 178 141 113 89 72 98 116 178
6 154 176 185 204 196 139 99 80 145 91 111 165
7 152 164 192 194 189 149 131 77 128 77 101 177
8 177 150 201 189 182 147 115 78 104 116 128 185
9 170 147 211 198 177 142 95 92 112 108 129 175
10 148 147 231 237 173 153 104 113 87 114 126 165
11 152 160 228 195 179 151 130 82 82 120 118 209
12 175 177 189 193 179 128 111 90 76 100 132 217
13 149 183 223 221 177 167 154 201 77 91 136 204
14 173 156 252 188 176 139 157 99 73 91 110 223
15 148 191 226 234 154 121 122 84 133 97 112 181
16 146 198 196 303 194 118 115 75 142 97 139 225
17 141 168 191 237 188 138 108 88 122 97 131 223
18 167 170 190 199 161 145 101 77 136 89 107 190
19 205 167 211 197 184 152 95 90 105 160 107 157
20 214 172 227 203 149 170 99 81 99 122 125 144
21 208 183 275 182 141 154 110 81 91 121 124 216
22 144 186 316 185 142 123 107 107 138 100 112 161
23 152 190 233 182 158 116 137 71 131 95 138 185
24 219 241 245 177 168 135 117 72 127 100 118 177
25 261 274 212 189 135 110 95 67 113 98 137 202
26 260 220 199 194 154 133 91 62 113 94 150 200
27 218 172 230 204 143 127 105 74 146 144 153 174
28 212 177 235 187 134 186 128 161 147 138 194 167
29 176 193 235 175 172 126 89 95 139 145 171 163
30 172   234 205 163 108 89 85 121 143 182 150
31 158   246   137   88 81   107   150