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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
1 137 112 143 332 192 138 77 47 32 60 107 141
2 138 124 152 330 180 132 87 47 44 59 109 148
3 130 153 156 312 169 115 71 41 34 56 112 150
4 128 159 159 316 161 111 66 44 33 66 98 136
5 139 150 159 350 166 110 67 40 33 65 96 128
6 125 131 189 324 162 149 60 36 35 65 100 127
7 116 124 232 296 163 157 55 40 60 56 90 138
8 132 113 209 264 147 140 54 48 52 55 89 132
9 136 107 226 243 147 114 61 48 46 77 116 130
10 132 105 220 259 159 99 65 54 40 59 109 148
11 134 110 224 258 160 94 58 52 45 57 114 157
12 138 115 228 251 150 91 56 60 49 68 116 160
13 152 120 227 248 147 91 66 59 40 70 126 147
14 148 123 262 241 157 126 64 55 37 73 123 165
15 131 112 282 220 142 98 47 47 36 106 117 158
16 126 131 238 278 150 91 54 47 36 85 113 147
17 119 125 238 267 154 98 53 38 41 86 130 160
18 117 136 232 219 139 89 53 47 70 77 114 192
19 133 135 239 204 136 82 52 59 60 76 100 173
20 141 128 241 187 134 72 46 55 49 104 103 144
21 122 143 225 190 134 68 46 49 41 124 116 161
22 113 153 272 206 117 66 51 46 44 103 117 156
23 118 159 253 193 114 72 48 40 50 96 127 158
24 152 171 236 195 123 73 66 38 51 97 111 179
25 179 204 225 184 127 72 54 40 63 101 118 205
26 187 202 229 172 133 70 45 35 70 106 129 173
27 202 169 251 193 119 64 47 32 83 101 147 161
28 194 162 253 188 107 68 55 49 62 113 138 148
29 152 194 288 180 110 70 51 50 70 119 134 138
30 131   315 186 133 75 46 45 72 145 128 137
31 122   313   133   43 36   120   129