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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 01104460 STONY BROOK AT RT 20 AT WALTHAM, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01090001
Latitude  42°22'08", Longitude  71°16'16" NAD27
Drainage area 22.0  square miles
Contributing drainage area 22.0  square miles
Gage datum 89.20 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 1997-10-01 -> 2022-09-30)

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 43 37 53 98 53 33 30 31 25 30 32 38
2 43 37 56 93 50 34 35 31 40 28 29 37
3 42 43 56 89 46 34 33 30 40 27 28 37
4 45 42 52 85 45 36 32 29 33 28 26 34
5 43 43 49 80 44 35 29 28 30 28 25 32
6 41 41 47 72 45 35 29 28 28 29 27 32
7 40 45 50 71 45 39 28 28 34 28 26 33
8 40 42 56 70 43 48 31 31 31 26 26 37
9 41 38 59 65 41 45 36 29 30 28 26 38
10 40 37 55 61 46 40 39 30 29 27 28 44
11 40 38 54 56 46 42 34 27 27 27 27 42
12 43 39 54 57 41 43 36 27 27 26 25 48
13 45 42 53 60 41 45 37 31 28 24 29 48
14 46 44 75 60 47 61 34 29 27 23 32 47
15 48 41 105 57 47 63 31 29 26 34 31 47
16 46 41 99 69 47 56 31 31 26 34 32 43
17 42 41 87 75 47 48 30 29 26 29 37 40
18 43 45 74 68 43 42 32 27 30 25 35 40
19 45 47 66 60 46 39 31 29 32 25 30 36
20 42 43 63 57 45 37 30 31 28 29 32 35
21 38 40 60 55 39 36 32 32 26 26 30 37
22 35 39 59 53 35 34 32 33 25 24 30 38
23 35 40 64 63 32 39 33 31 25 26 32 38
24 44 46 64 63 31 40 43 33 25 25 34 42
25 51 57 60 56 32 39 41 32 23 29 33 45
26 51 62 54 57 36 36 34 30 26 35 32 47
27 47 56 53 61 37 31 31 28 27 34 36 48
28 45 54 54 59 34 33 33 30 29 33 34 47
29 42 36 64 55 34 33 32 32 32 34 33 45
30 40   86 53 33 30 30 27 33 38 34 47
31 38   102   31   30 25   36   44