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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 459.45 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 1965-10-01 -> 2020-09-30)

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 51 40 53 151 79 62 32 20 12 32 37 71
2 47 50 58 163 80 58 29 27 11 27 44 61
3 45 64 55 166 76 56 29 20 13 25 55 59
4 44 53 67 168 77 57 31 22 13 31 35 57
5 48 53 61 177 67 50 29 19 17 24 43 54
6 46 49 64 146 76 98 25 18 23 30 45 50
7 44 47 73 132 64 78 24 20 33 26 37 50
8 51 40 75 120 60 56 22 30 26 39 61 52
9 62 38 78 117 67 48 22 27 20 72 67 52
10 49 50 68 145 76 50 23 20 16 28 51 57
11 50 55 86 131 77 46 18 31 19 26 47 68
12 48 48 81 124 78 46 18 39 17 32 64 73
13 43 46 84 134 83 52 32 28 17 31 53 66
14 61 44 86 124 76 61 26 24 15 40 47 65
15 49 48 91 117 65 47 19 21 15 52 49 56
16 43 53 79 183 70 45 35 18 30 32 49 53
17 41 43 98 137 72 46 18 16 32 34 56 68
18 55 48 95 111 72 42 18 20 43 30 46 55
19 56 44 108 109 74 38 19 22 27 31 41 47
20 50 58 116 110 70 34 17 16 20 61 61 42
21 47 55 107 104 63 33 18 20 16 50 51 82
22 46 57 128 111 52 32 23 18 18 35 51 54
23 44 53 112 115 52 40 27 16 26 41 52 53
24 55 65 90 121 70 36 23 14 21 39 43 70
25 67 88 99 98 74 33 18 16 30 46 50 68
26 68 68 107 86 62 40 19 13 33 42 63 55
27 80 60 125 96 54 28 25 12 37 36 58 61
28 57 56 119 91 46 42 24 59 36 55 56 52
29 47 64 142 86 67 37 30 20 40 55 56 49
30 43   157 76 68 51 26 18 45 48 57 51
31 47   159   66   23 14   32   48