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USGS Daily Statistics for Massachusetts

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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


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 01333000 GREEN RIVER AT WILLIAMSTOWN, MA


Berkshire County, Massachusetts
Hydrologic Unit Code 02020003
Latitude  42°42'32", Longitude  73°11'50" NAD27
Drainage area 42.6  square miles
Contributing drainage area 42.6  square miles
Gage datum 610.6 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 1948-10-01 -> 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
1 101 75 88 231 135 87 58 38 26 47 71 117
2 105 92 90 235 138 81 56 36 33 46 68 115
3 96 102 86 235 131 75 53 31 28 43 84 104
4 87 92 90 254 132 74 49 34 27 44 70 101
5 88 79 107 263 120 64 44 30 25 41 69 105
6 88 75 126 245 119 77 41 31 34 47 73 103
7 83 79 130 225 109 80 38 35 37 52 71 114
8 84 71 122 210 105 68 37 47 29 57 75 98
9 93 65 121 191 106 69 56 33 42 67 78 97
10 91 69 126 212 105 64 47 48 30 53 77 109
11 86 84 129 207 108 59 36 45 32 48 73 111
12 99 79 136 193 116 65 44 49 41 52 76 123
13 97 73 144 197 124 64 47 44 40 44 79 121
14 94 73 154 196 115 66 43 39 35 44 77 124
15 86 73 148 197 105 70 37 36 36 50 81 115
16 81 79 138 207 99 66 43 32 35 50 78 101
17 72 75 142 211 98 61 36 32 37 65 84 104
18 85 80 141 197 96 59 40 32 59 54 79 123
19 82 77 134 186 101 58 44 32 42 52 73 100
20 83 82 151 186 106 51 39 29 43 63 86 92
21 80 85 151 166 102 49 36 32 36 70 90 132
22 85 91 160 163 96 48 32 32 41 55 89 106
23 88 94 154 178 87 51 32 36 39 63 90 105
24 116 95 148 169 89 55 34 31 39 67 85 116
25 118 110 159 166 92 58 32 26 41 73 93 132
26 122 100 178 154 86 68 28 23 37 77 110 110
27 110 95 186 148 82 53 30 22 38 74 115 105
28 95 94 185 140 75 48 35 44 41 81 108 102
29 83 100 211 141 83 50 39 34 44 81 116 97
30 78   221 137 92 74 48 31 46 74 117 94
31 75   229   84   41 27   69   92