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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 85 141 80 65 40 27 23 28 45 61
2 67 65 87 144 78 65 38 27 24 25 41 64
3 67 82 102 142 72 69 39 27 27 24 42 66
4 70 99 106 131 71 63 37 25 22 24 43 68
5 74 90 96 135 72 58 34 23 20 27 42 62
6 71 79 93 139 71 61 32 21 18 28 42 61
7 63 71 93 132 70 65 29 20 20 26 44 63
8 60 70 99 116 66 70 27 24 23 24 41 64
9 63 66 100 104 63 64 28 31 22 27 44 64
10 73 62 103 99 66 55 33 33 21 29 50 69
11 77 66 104 104 73 51 33 33 25 29 51 74
12 69 67 105 97 72 47 30 32 26 29 53 80
13 69 64 104 95 68 46 32 31 22 31 54 81
14 75 71 112 94 77 59 35 34 21 33 58 76
15 74 75 140 90 79 63 32 30 19 38 62 74
16 65 76 137 93 72 54 26 25 18 42 61 71
17 60 81 123 113 72 47 23 23 18 39 60 71
18 59 81 122 107 69 44 24 23 21 37 64 80
19 60 83 125 94 68 46 25 28 32 35 59 89
20 65 78 118 90 66 42 24 33 34 37 53 80
21 67 75 113 84 63 39 22 31 27 59 52 68
22 74 75 130 85 60 37 23 28 23 62 55 69
23 67 76 155 91 54 37 24 25 23 51 57 68
24 67 80 147 92 49 39 29 22 26 43 60 69
25 88 101 126 95 50 36 41 20 27 39 59 73
26 114 110 115 88 59 34 38 22 28 38 60 78
27 112 100 110 85 62 33 32 20 30 40 62 80
28 108 89 115 86 54 33 28 18 31 41 65 85
29 96 95 122 81 49 35 27 20 30 42 62 78
30 79   133 81 52 39 29 22 30 46 59 73
31 71   148   59   29 23   49   68