Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

USGS Daily Statistics for Massachusetts

Click to hide state-specific text

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.


! Statistics pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline.

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 01171500 MILL RIVER AT NORTHAMPTON, MA


Hampshire County, Massachusetts
Hydrologic Unit Code 01080201
Latitude  42°19'08", Longitude  72°39'56" NAD27
Drainage area 52.6  square miles
Contributing drainage area 52.6  square miles
Gage datum 169.34 feet above NAVD88
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 1938-10-01 -> 2026-09-30)

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
1 104 85 112 287 167 128 59 38 28 58 71 116
2 103 96 119 294 149 114 52 42 36 51 75 112
3 95 115 116 298 148 107 52 33 27 45 107 101
4 90 111 134 296 154 101 56 35 28 53 77 95
5 91 108 120 322 152 88 51 37 26 48 88 103
6 95 94 139 293 154 133 47 30 30 50 78 108
7 87 95 169 270 132 120 42 37 46 47 78 109
8 91 92 149 240 121 93 41 50 39 51 87 103
9 101 79 174 220 132 83 41 45 34 68 116 104
10 104 79 149 233 141 85 63 53 31 47 86 108
11 97 102 167 224 142 80 46 44 42 45 87 124
12 96 93 164 240 144 80 43 50 48 51 101 136
13 94 89 176 230 137 82 43 50 36 47 93 124
14 99 91 182 223 129 99 55 42 31 54 84 119
15 90 94 185 205 113 88 41 41 37 102 84 113
16 87 104 178 270 118 85 61 34 38 76 81 99
17 80 93 200 234 140 77 45 29 50 80 91 107
18 92 103 192 202 134 68 54 42 52 57 80 138
19 96 99 193 192 134 68 48 78 46 59 70 101
20 94 116 221 196 126 60 42 39 39 87 96 86
21 89 109 205 179 121 58 46 33 34 79 88 133
22 90 117 260 172 112 54 44 35 36 61 93 104
23 93 114 226 200 104 58 53 38 40 63 94 107
24 107 123 213 190 121 60 47 32 40 74 79 117
25 123 143 221 180 129 54 36 28 52 70 99 131
26 136 140 228 178 121 55 38 24 49 66 103 112
27 141 124 245 179 108 50 40 25 60 63 109 112
28 120 117 233 172 101 65 44 58 60 81 100 105
29 105 121 252 170 112 57 51 33 70 81 101 95
30 91   269 157 122 73 46 29 71 81 106 107
31 92   293   117   40 27   86   117