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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 613 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 -> 2019-09-30)

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 97 75 88 229 135 91 59 38 25 47 62 113
2 102 94 90 237 139 84 50 35 29 46 61 111
3 93 104 84 240 132 78 46 31 26 44 74 98
4 83 91 89 262 133 77 45 33 26 43 65 97
5 84 80 107 273 120 67 41 30 24 39 66 102
6 85 75 127 252 119 79 39 31 34 46 69 101
7 80 77 122 232 110 84 37 35 37 49 68 110
8 82 67 119 210 106 71 34 48 27 55 73 96
9 92 63 119 191 108 71 34 34 29 67 77 95
10 85 67 119 216 106 66 34 49 26 54 76 98
11 84 84 127 211 111 60 30 47 30 48 72 101
12 97 78 134 194 119 67 31 50 40 53 73 120
13 93 72 145 196 128 67 42 45 37 44 75 120
14 92 73 155 197 119 68 38 40 33 43 75 114
15 85 73 148 197 107 73 33 36 35 51 80 109
16 78 79 139 210 101 69 38 33 32 49 76 96
17 70 74 144 216 100 63 30 33 35 57 83 101
18 85 77 143 202 99 61 31 32 59 52 78 104
19 82 76 134 188 104 60 33 32 40 52 71 90
20 83 82 152 189 109 53 33 29 42 64 86 87
21 81 87 153 169 105 50 30 32 36 59 92 125
22 86 91 163 167 99 49 28 32 40 51 88 101
23 89 90 151 182 89 52 28 31 39 62 90 98
24 105 95 144 173 91 57 31 27 35 67 84 113
25 112 113 157 171 95 59 30 24 39 72 91 120
26 117 102 177 158 89 69 27 22 36 74 108 104
27 108 94 188 148 85 50 28 21 38 72 110 102
28 94 94 183 142 77 48 34 45 41 81 103 99
29 81 96 212 143 85 51 38 33 44 81 115 94
30 76   225 138 96 76 46 29 44 71 112 91
31 74   233   87   40 27   64   88