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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
1 187 162 183 251 218 145 132 91 163 139 107 173
2 161 173 219 256 185 147 119 91 139 101 95 157
3 174 207 177 246 186 138 117 79 98 102 125 161
4 186 199 192 212 185 151 101 138 86 88 102 143
5 158 188 197 224 177 141 113 89 72 98 116 178
6 154 175 183 202 195 139 99 80 145 91 111 165
7 152 163 190 192 187 149 131 77 128 77 101 177
8 177 149 199 187 181 147 115 78 104 116 128 185
9 170 147 209 195 175 142 95 92 112 108 129 175
10 148 147 229 234 171 153 104 113 87 114 126 165
11 152 160 226 193 177 151 130 82 82 120 118 209
12 175 176 188 190 177 128 111 90 76 100 132 217
13 149 182 222 218 175 167 154 201 77 91 136 204
14 173 155 250 185 174 139 157 99 73 91 110 223
15 148 189 224 231 153 121 122 84 133 97 112 181
16 146 196 195 299 191 118 115 75 142 97 139 225
17 141 168 190 234 186 138 108 88 122 97 131 223
18 165 169 189 197 159 145 101 77 136 89 107 190
19 205 166 210 194 182 152 95 90 105 160 107 157
20 216 171 225 200 148 170 99 81 99 122 125 144
21 206 182 272 180 139 154 110 81 91 121 124 216
22 143 184 311 183 140 123 107 107 138 100 112 161
23 154 188 231 181 157 116 137 71 131 95 138 185
24 218 238 243 175 166 135 117 72 127 100 118 177
25 258 270 211 187 135 110 95 67 113 98 137 202
26 265 217 198 192 154 133 91 62 113 94 150 200
27 217 170 227 203 143 127 105 74 146 144 153 174
28 211 176 233 187 134 186 128 161 147 138 194 167
29 176 193 233 177 172 126 89 95 139 145 171 163
30 171   231 207 163 108 89 85 121 143 182 150
31 158   243   137   88 81   107   150