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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 01100600 SHAWSHEEN RIVER NEAR WILMINGTON, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01070002
Latitude  42°34'05", Longitude  71°12'55" NAD27
Drainage area 36.5  square miles
Contributing drainage area 36.5  square miles
Gage datum 79.61 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 1963-10-01 -> 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 65 65 85 140 80 65 40 27 23 28 45 61
2 68 65 86 143 77 66 38 27 24 25 41 63
3 67 81 102 141 73 69 39 27 27 24 41 65
4 70 98 105 131 71 62 37 25 22 24 43 67
5 73 89 95 134 72 58 34 23 20 27 42 61
6 71 78 93 138 72 61 32 21 18 28 42 60
7 63 71 95 132 71 65 29 20 20 26 43 62
8 59 69 100 116 67 71 27 24 23 24 41 63
9 63 66 100 104 64 66 28 31 22 26 43 64
10 72 61 103 98 68 56 33 33 21 29 49 68
11 76 65 103 103 76 52 33 33 25 29 51 73
12 68 66 105 97 74 47 30 32 26 28 53 81
13 68 64 103 95 69 46 32 31 22 30 54 84
14 74 70 111 94 78 58 35 34 21 32 57 77
15 73 75 138 90 79 63 32 30 19 37 61 74
16 64 75 136 93 73 54 26 25 18 42 60 71
17 59 82 122 112 72 46 23 23 18 38 60 70
18 58 81 123 107 69 44 24 23 21 37 63 80
19 60 82 125 93 68 46 25 28 32 35 58 88
20 64 77 118 90 66 42 24 33 34 37 53 80
21 67 75 112 84 63 39 22 31 27 58 51 68
22 73 74 129 85 60 36 23 28 23 62 56 68
23 66 76 154 91 56 37 24 25 23 50 57 68
24 66 79 146 92 54 38 29 22 26 43 60 68
25 87 100 126 95 53 36 41 20 27 39 60 72
26 113 109 115 87 60 34 38 22 28 38 59 77
27 111 100 110 85 62 33 32 20 30 39 62 79
28 106 89 114 86 55 33 28 18 31 40 65 84
29 95 95 121 81 50 35 27 20 30 41 62 78
30 78   132 81 52 39 29 22 30 45 59 73
31 71   146   59   29 23   49   68