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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 water year 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 60 55 72 110 67 32 16 8.0 18 20 36 59
2 64 57 90 113 57 24 24 7.5 8.5 20 30 60
3 59 58 186 105 52 20 24 7.1 6.0 26 27 67
4 55 61 154 103 51 20 21 6.4 6.5 36 27 74
5 51 76 105 120 56 28 17 6.7 5.5 30 26 64
6 52 88 91 116 66 33 15 6.4 4.8 21 26 58
7 55 76 82 128 71 32 13 5.7 5.6 19 33 53
8 63 75 102 125 66 27 14 5.1 5.4 16 36 48
9 66 71 124 102 58 22 13 4.6 4.6 15 39 44
10 59 64 113 84 51 20 12 3.8 4.8 14 44 53
11 65 62 104 75 43 17 10 4.1 5.0 13 46 55
12 70 75 93 73 38 15 9.8 5.8 5.4 16 42 69
13 94 86 84 78 38 19 11 6.7 7.1 20 41 75
14 100 97 102 76 42 19 11 6.7 7.3 20 54 68
15 69 95 137 70 45 16 9.8 5.5 6.7 16 53 64
16 58 85 146 90 41 14 8.7 4.5 6.0 15 55 58
17 59 90 138 97 38 14 7.4 4.0 5.7 15 58 55
18 67 90 128 80 38 12 9.4 3.8 5.1 15 54 54
19 77 78 107 70 43 13 10 5.9 5.0 19 46 54
20 82 72 95 61 44 13 9.3 5.6 5.2 19 43 48
21 83 69 89 65 41 13 9.3 4.4 5.5 17 43 44
22 76 65 86 74 35 13 12 4.1 5.5 15 41 47
23 61 63 95 73 32 15 12 6.3 6.2 14 47 52
24 76 69 107 64 32 18 20 7.2 5.7 14 57 79
25 98 90 93 55 35 19 30 6.8 4.8 19 67 102
26 99 105 78 65 38 17 27 6.4 6.7 24 81 92
27 90 96 75 78 38 15 18 4.9 14 27 86 79
28 76 81 71 87 38 16 13 4.9 29 36 77 74
29 73 73 72 86 38 19 9.3 11 35 49 62 73
30 66   101 80 34 17 8.2 31 24 53 57 68
31 61   132   32   7.7 31   46   62