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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 01170100 GREEN RIVER NEAR COLRAIN, MA


Franklin County, Massachusetts
Hydrologic Unit Code 01080203
Latitude  42°42'12", Longitude  72°40'16" NAD27
Drainage area 41.4  square miles
Contributing drainage area 41.4  square miles
Gage datum 434.51 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 1967-10-01 -> 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 90 65 82 281 174 93 73 39 21 48 76 118
2 91 79 87 272 169 85 74 44 30 46 90 124
3 82 92 86 255 160 86 73 33 25 39 92 106
4 77 93 97 276 159 86 65 36 25 49 68 99
5 84 89 89 304 136 73 54 36 24 47 73 95
6 84 80 106 269 144 104 46 32 42 50 81 88
7 73 74 111 247 126 107 44 38 44 45 70 97
8 83 68 115 237 115 86 43 43 30 54 89 89
9 94 61 119 216 123 70 48 37 34 86 116 82
10 79 63 113 254 123 71 60 47 27 49 95 92
11 81 80 134 257 128 74 41 42 32 43 85 98
12 92 75 129 235 127 72 46 47 31 54 101 106
13 83 66 144 255 133 87 48 40 32 47 94 105
14 89 64 145 250 129 100 50 39 29 52 87 113
15 83 65 143 248 115 77 40 36 27 71 88 102
16 75 72 136 283 114 75 56 35 32 58 85 90
17 68 70 166 274 118 71 51 29 35 73 95 106
18 79 79 163 241 114 61 59 33 46 59 81 96
19 94 74 177 234 119 66 41 34 38 57 73 81
20 82 92 174 236 119 59 35 29 34 92 98 73
21 72 85 172 226 114 50 34 30 30 87 93 123
22 70 90 197 219 94 49 35 30 30 65 83 107
23 73 96 169 240 86 59 41 31 39 75 84 116
24 81 104 159 243 110 57 39 29 40 70 75 118
25 83 128 172 207 118 54 36 25 44 76 83 136
26 98 107 183 183 96 62 37 22 44 78 99 108
27 112 91 205 190 90 56 37 20 55 77 111 107
28 91 86 218 184 78 71 42 86 51 94 99 95
29 73 103 237 176 98 76 55 36 49 96 105 89
30 68   267 160 105 102 54 34 54 100 104 89
31 74   285   101   39 24   74   83