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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 01105917 MATTAPOISETT RIVER NEAR MATTAPOISETT, MA


Plymouth County, Massachusetts
Hydrologic Unit Code 01090002
Latitude  41°39'45", Longitude  70°50'20" NAD27
Drainage area 24.0  square miles
Gage datum 10 feet above NGVD29
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00060, Discharge, cubic feet per second,
Day of
month
Mean of daily mean values for each day for 7 - 9 years of record in, ft3/s   (Calculation Period 2005-10-01 -> 2019-09-30)

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 53 54 74 121 69 33 16 8.0 18 20 34 51
2 54 57 94 124 58 25 24 7.5 8.5 20 28 52
3 51 59 204 113 52 21 24 7.1 6.0 26 25 53
4 49 62 165 110 51 21 21 6.4 6.5 36 22 60
5 46 79 107 131 55 28 17 6.7 5.5 30 20 54
6 43 93 90 127 66 33 15 6.4 4.8 21 20 50
7 44 78 83 140 72 32 13 5.7 5.6 19 26 47
8 56 73 108 136 67 27 14 5.1 5.4 16 28 43
9 62 69 133 107 59 22 13 4.6 4.6 15 33 40
10 56 62 120 87 52 20 12 3.8 4.8 14 33 50
11 65 61 100 78 44 17 10 4.1 5.0 13 32 54
12 72 77 83 76 38 15 9.8 5.8 5.4 12 30 70
13 100 84 76 82 35 19 11 6.7 7.1 12 28 78
14 108 90 99 78 38 19 11 6.7 7.3 12 29 70
15 73 89 141 70 41 16 9.8 5.5 6.7 11 33 65
16 61 81 151 89 39 14 8.7 4.5 6.0 12 38 59
17 63 88 142 98 37 14 7.4 4.0 5.7 12 39 52
18 71 89 132 83 38 12 9.4 3.8 5.1 14 36 50
19 83 78 111 72 44 13 10 5.9 5.0 19 32 50
20 79 72 99 63 46 13 9.3 5.6 5.2 19 31 46
21 62 68 93 62 42 13 9.3 4.4 5.5 16 33 41
22 53 63 86 70 35 13 12 4.1 5.5 14 33 42
23 51 60 92 69 32 15 12 6.3 6.2 13 41 46
24 69 66 106 61 32 18 20 7.2 5.7 12 53 79
25 82 86 93 53 34 19 30 6.8 4.8 17 60 106
26 83 102 79 66 37 17 27 6.4 6.7 24 67 97
27 82 97 78 79 37 15 18 4.9 14 27 62 82
28 70 81 74 89 37 16 13 4.9 29 29 51 76
29 70 73 77 88 39 19 9.3 11 35 41 45 70
30 62   110 82 35 17 8.2 31 24 47 46 63
31 59   145   33   7.7 31   42   58