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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 01094400 NORTH NASHUA RIVER AT FITCHBURG, MA


Worcester County, Massachusetts
Hydrologic Unit Code 01070004
Latitude  42°34'34", Longitude  71°47'19" NAD27
Drainage area 64.2  square miles
Contributing drainage area 64.2  square miles
Gage datum 394.13 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 1972-10-01 -> 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
1 135 113 144 334 193 136 77 47 32 60 107 141
2 137 125 153 333 181 131 87 47 44 59 109 148
3 129 155 158 313 170 114 71 41 34 56 112 152
4 129 160 161 317 161 111 66 44 33 66 98 139
5 140 152 160 353 157 110 67 40 33 65 96 130
6 126 133 176 324 154 148 60 36 35 65 100 129
7 117 125 225 296 158 154 55 40 60 56 90 140
8 134 114 206 264 143 135 54 48 52 55 89 134
9 138 108 226 244 134 114 61 48 46 77 116 132
10 134 106 221 260 141 99 65 54 40 59 109 150
11 135 111 224 259 150 94 58 52 45 57 114 158
12 139 116 228 252 144 91 56 60 49 68 116 158
13 154 121 228 249 144 91 66 59 40 70 126 147
14 149 123 263 241 155 126 64 55 37 73 123 166
15 133 112 284 221 140 98 47 47 36 106 117 159
16 127 131 239 280 148 91 54 47 36 85 113 149
17 120 125 230 269 153 98 53 38 41 86 130 161
18 118 137 227 221 138 89 53 47 70 77 114 194
19 135 135 238 206 135 82 52 59 60 76 100 175
20 142 129 241 189 134 72 46 55 49 104 103 146
21 123 145 224 192 134 68 46 49 41 124 116 163
22 114 155 273 207 115 66 51 46 44 103 117 158
23 119 161 254 194 106 72 48 40 50 96 127 160
24 154 173 236 197 119 73 66 38 51 97 111 181
25 182 208 225 185 125 72 54 40 63 101 118 207
26 189 206 230 171 132 70 45 35 70 106 129 176
27 205 171 252 193 117 64 47 32 83 101 147 164
28 197 163 254 188 106 68 55 49 62 113 138 151
29 153 194 291 181 110 70 51 50 70 119 134 139
30 132   318 187 132 75 46 45 72 145 128 136
31 123   315   132   43 36   120   130