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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.


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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 -> 2025-09-30)

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 93 66 81 279 171 95 71 39 21 48 76 116
2 92 79 87 268 166 85 72 43 30 45 89 122
3 83 92 89 257 158 86 72 33 25 38 91 106
4 77 93 98 276 159 85 63 35 25 48 68 100
5 84 88 91 302 148 73 53 36 24 46 73 95
6 83 80 112 269 157 103 45 32 41 49 80 87
7 73 74 125 246 131 108 43 39 44 46 69 96
8 82 68 118 236 118 87 43 43 30 56 87 88
9 93 61 120 218 129 71 47 39 33 85 114 81
10 88 64 118 255 135 72 58 50 27 48 94 91
11 84 80 136 258 132 74 40 43 32 43 84 106
12 93 75 131 250 128 72 45 47 30 53 99 112
13 90 66 145 258 133 86 47 40 32 46 92 106
14 92 64 145 250 128 100 49 39 28 52 86 112
15 84 65 145 248 115 76 39 36 26 70 86 101
16 76 72 140 280 113 75 55 34 32 57 83 90
17 69 70 181 270 117 70 50 28 35 71 93 106
18 80 78 167 238 114 62 57 33 45 58 80 125
19 94 73 178 230 118 66 40 34 38 56 71 90
20 82 91 175 232 118 59 34 29 33 90 96 77
21 73 84 174 222 113 50 33 30 30 94 91 123
22 70 88 196 215 95 50 34 30 30 68 83 107
23 73 94 171 235 88 59 40 31 38 75 85 115
24 81 102 160 238 109 57 38 29 39 69 75 118
25 84 125 171 203 117 53 35 25 43 75 83 135
26 102 105 182 183 95 61 37 22 43 77 98 107
27 114 89 204 189 91 56 36 20 54 76 112 107
28 93 86 220 181 81 70 41 85 51 92 99 95
29 75 110 237 173 97 74 54 36 48 94 104 90
30 69   265 159 104 100 52 34 54 100 102 92
31 75   283   109   38 24   74   85