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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 01197000 EAST BRANCH HOUSATONIC RIVER AT COLTSVILLE, MA


Berkshire County, Massachusetts
Hydrologic Unit Code 01100005
Latitude  42°28'10.5", Longitude  73°11'50.4" NAD83
Drainage area 57.6  square miles
Contributing drainage area 57.6  square miles
Gage datum 993 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 1935-10-01 -> 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
1 126 88 101 283 173 123 70 50 42 67 87 114
2 118 94 104 282 164 116 66 49 53 67 87 114
3 112 97 101 288 163 108 65 42 49 62 106 106
4 102 99 111 296 164 101 73 48 42 64 91 105
5 102 91 107 329 150 85 60 47 42 67 87 110
6 106 87 134 320 147 97 62 50 55 62 87 112
7 103 93 154 297 132 117 55 67 65 66 86 117
8 98 91 143 273 119 100 49 64 55 77 92 110
9 105 80 151 242 122 90 50 51 50 102 107 114
10 101 79 143 258 130 81 68 65 42 67 96 118
11 99 90 147 268 137 81 56 61 50 58 89 124
12 106 91 173 255 145 93 53 64 53 64 98 138
13 110 85 169 252 147 103 58 66 53 60 99 124
14 105 84 179 261 142 108 61 58 50 61 104 120
15 100 89 173 256 138 96 53 53 50 82 103 114
16 92 101 175 278 127 91 63 46 48 87 91 102
17 82 94 198 292 143 86 55 47 48 90 90 104
18 89 96 239 264 138 77 53 55 59 80 88 124
19 97 92 211 248 134 73 59 61 64 74 80 108
20 95 103 207 252 138 71 58 49 68 95 96 94
21 90 107 207 213 122 70 55 44 84 107 107 126
22 98 116 235 207 117 73 67 46 74 87 102 116
23 98 122 204 245 108 74 72 50 61 79 105 104
24 106 120 195 218 117 82 64 45 61 95 89 115
25 138 131 203 212 129 73 53 42 66 96 102 138
26 136 121 219 197 123 86 48 40 65 92 122 128
27 132 113 239 193 112 74 47 35 68 92 112 112
28 118 112 236 177 100 67 64 69 70 97 114 106
29 95 124 246 174 109 66 66 62 71 100 129 104
30 84   265 179 122 80 71 50 73 93 114 114
31 91   289   120   55 42   92   149