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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 01095220 STILLWATER RIVER NEAR STERLING, MA


Worcester County, Massachusetts
Hydrologic Unit Code 01070004
Latitude  42°24'39", Longitude  71°47'30" NAD27
Drainage area 31.6  square miles
Contributing drainage area 31.6  square miles
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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 1993-10-01 -> 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 60 53 89 166 75 41 30 21 8.1 16 45 62
2 62 53 84 166 72 45 42 16 6.8 15 42 74
3 58 60 92 156 67 51 40 13 7.1 15 59 71
4 62 59 91 151 67 53 32 13 7.7 15 51 59
5 66 69 94 154 62 44 23 14 6.5 15 40 51
6 60 71 92 133 61 41 18 12 6.9 16 38 52
7 61 79 116 136 60 62 16 11 16 14 40 53
8 67 64 117 123 61 77 18 11 24 12 38 58
9 63 54 141 112 62 59 26 10 24 20 46 55
10 57 52 122 111 62 47 24 11 16 18 53 77
11 60 57 106 101 69 48 18 10 14 20 47 77
12 68 64 114 100 70 49 17 15 12 26 45 82
13 84 63 111 108 65 46 20 19 11 20 53 83
14 85 77 134 113 82 64 29 21 9.9 20 56 81
15 89 65 146 108 78 58 18 19 8.9 52 57 81
16 71 59 142 154 76 45 14 18 10 47 53 70
17 62 58 122 167 89 45 14 12 16 33 61 68
18 59 65 115 131 73 53 15 12 26 24 58 88
19 75 77 110 110 69 43 12 14 31 21 46 74
20 81 67 111 97 71 38 11 10 17 35 45 68
21 69 62 110 90 59 34 9.4 9.5 14 47 44 72
22 56 70 130 101 50 32 9.3 14 11 43 44 73
23 51 69 143 109 46 41 13 16 13 37 51 64
24 70 73 124 108 54 42 34 11 23 36 54 80
25 111 104 106 88 59 40 31 8.4 19 41 52 105
26 95 128 103 79 69 41 18 7.7 18 55 53 89
27 81 96 112 95 70 31 18 7 20 43 67 84
28 89 97 113 86 53 29 16 16 17 48 61 82
29 69 111 138 81 45 28 15 23 19 59 54 74
30 58   171 76 43 28 13 15 18 78 55 69
31 56   187   39   17 10   56   60