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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 01169900 SOUTH RIVER NEAR CONWAY, MA


Franklin County, Massachusetts
Hydrologic Unit Code 01080203
Latitude  42°32'31", Longitude  72°41'39" NAD27
Drainage area 24.1  square miles
Contributing drainage area 24.1  square miles
Gage datum 456 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 52 - 53 years of record in, ft3/s   (Calculation Period 1965-10-01 -> 2018-09-30)

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 49 39 53 153 75 63 33 20 12 31 37 71
2 46 49 58 165 78 59 29 27 11 25 41 59
3 44 63 54 168 75 57 30 21 13 21 47 56
4 43 52 66 170 75 58 31 23 13 29 33 55
5 46 52 61 181 66 50 29 20 17 23 42 54
6 45 48 64 148 75 99 25 18 23 29 41 49
7 44 45 74 134 64 79 24 20 33 26 34 50
8 51 39 76 119 60 56 22 30 26 39 60 52
9 61 36 79 116 67 48 23 27 21 73 67 52
10 49 49 68 146 77 50 23 21 16 28 48 56
11 49 55 87 133 78 46 18 31 17 25 46 68
12 44 47 82 126 79 47 18 39 15 31 64 74
13 42 45 84 133 83 52 32 28 15 31 51 66
14 60 43 86 123 76 61 27 24 15 40 46 61
15 49 48 91 116 65 47 19 21 15 53 49 54
16 42 54 78 186 70 45 35 18 31 32 49 52
17 41 43 99 139 73 46 18 16 32 31 56 68
18 56 48 97 112 73 42 18 20 35 29 46 55
19 57 44 109 109 74 38 19 22 25 31 40 47
20 50 58 117 109 71 35 18 16 19 63 61 42
21 46 55 109 103 64 33 18 20 15 51 51 74
22 45 58 129 111 53 32 23 18 17 36 52 50
23 42 53 113 115 52 40 26 15 26 42 52 51
24 49 65 91 122 71 36 23 13 21 40 43 69
25 61 89 100 99 75 32 18 16 26 47 49 67
26 65 68 108 86 63 40 19 12 30 43 63 55
27 80 56 126 92 55 28 25 11 35 35 55 61
28 56 55 120 90 47 43 24 61 34 55 55 51
29 46 63 141 85 68 37 31 20 39 55 56 48
30 42   157 75 69 52 26 17 45 47 57 50
31 45   159   67   23 13   32   47