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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 01477000 Chester Creek near Chester, PA


Delaware County, Pennsylvania
Hydrologic Unit Code 02040202
Latitude  39°52'08", Longitude  75°24'31" NAD27
Drainage area 61.1  square miles
Gage datum 23.41 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 1931-10-01 -> 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
1 116 94 118 152 131 91 65 88 58 98 67 96
2 115 111 136 172 102 101 63 57 68 66 63 87
3 126 130 123 153 108 98 73 70 66 59 78 91
4 107 109 153 140 108 93 60 95 67 50 71 89
5 99 110 142 153 110 83 84 59 58 56 69 99
6 102 110 144 143 107 76 71 53 85 52 65 96
7 100 127 148 137 109 92 70 83 62 49 88 96
8 99 114 124 130 111 81 66 80 48 62 92 97
9 136 87 129 132 106 80 87 68 50 58 68 102
10 111 95 135 148 103 85 70 71 54 69 77 90
11 94 106 151 121 104 87 69 56 59 67 71 127
12 104 116 139 125 109 97 77 61 98 55 86 111
13 88 129 159 150 114 109 108 99 128 46 92 104
14 102 112 164 126 105 85 83 67 101 49 72 121
15 100 118 150 149 95 79 71 50 75 55 70 96
16 89 113 125 179 117 67 65 50 115 54 76 117
17 79 108 128 137 105 73 62 63 68 57 82 113
18 111 107 132 111 102 75 62 75 72 56 66 120
19 127 120 148 110 104 84 59 93 62 91 69 84
20 112 115 149 124 93 106 57 57 65 68 79 85
21 113 114 171 106 97 92 90 57 72 61 74 139
22 95 127 190 107 97 100 65 70 66 58 87 94
23 100 131 163 111 98 73 82 85 64 60 79 99
24 125 149 152 114 106 71 78 57 61 63 72 98
25 147 143 130 116 93 67 75 55 58 65 135 118
26 148 145 131 127 111 65 63 49 65 60 101 116
27 111 119 138 122 91 102 70 60 81 82 94 99
28 127 123 157 120 88 88 86 120 74 91 106 107
29 99 112 151 107 99 80 65 52 85 101 105 100
30 98   141 128 98 65 58 50 89 83 103 104
31 92   150   86   59 50   62   95