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USGS Surface-Water 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 -> 2022-09-30)

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
1 132 109 143 335 186 140 78 48 33 56 109 144
2 134 123 152 333 177 135 84 47 45 57 112 153
3 127 155 153 316 168 118 65 40 35 55 116 153
4 127 151 159 319 160 114 57 43 34 67 101 137
5 139 145 159 359 156 114 55 39 34 66 99 129
6 124 130 175 329 154 155 53 36 35 65 103 130
7 114 123 211 300 159 161 50 38 62 55 92 140
8 134 111 196 262 143 141 52 46 54 54 91 134
9 138 104 225 240 135 116 59 47 48 77 119 133
10 118 101 210 259 144 102 54 53 41 60 112 151
11 126 106 218 260 153 97 47 51 38 58 117 146
12 135 112 226 244 148 94 51 60 32 70 118 153
13 137 117 228 244 148 94 64 60 32 72 129 145
14 135 120 267 241 160 129 62 57 32 73 126 167
15 125 111 288 221 144 101 46 47 34 109 120 160
16 122 130 242 286 150 94 41 46 35 87 115 147
17 114 122 233 275 156 102 42 37 41 89 133 159
18 113 125 229 224 141 91 44 45 70 79 117 172
19 132 128 240 204 138 84 45 58 56 78 102 159
20 141 125 244 188 137 73 42 55 46 107 106 137
21 121 143 227 194 134 69 40 48 39 126 119 160
22 112 155 279 211 116 67 40 47 42 103 118 156
23 116 152 254 193 107 74 42 41 50 98 127 135
24 153 170 225 195 122 75 64 39 51 98 113 167
25 181 209 216 186 129 73 52 38 62 105 122 203
26 177 209 224 172 136 71 43 33 70 109 134 172
27 197 173 249 195 120 61 46 31 85 103 150 161
28 194 164 246 192 106 66 56 49 63 117 140 147
29 149 192 283 185 112 69 51 51 68 123 137 135
30 127   319 189 134 75 45 45 63 150 132 133
31 119   320   135   42 37   123   126