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Stony Brook At Rt 20 At Waltham, Ma Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 51.04
01-02 41.85
01-03 42.3
01-04 41.9
01-05 41.01
01-06 39.23
01-07 38.79
01-08 35.82
01-09 34.82
01-10 49.41
01-11 63.8
01-12 58.44
01-13 56.79
01-14 61.19
01-15 53.68
01-16 46.84
01-17 49.14
01-18 38.75
01-19 43.38
01-20 42.08
01-21 40.27
01-22 34.67
01-23 33.72
01-24 35.29
01-25 44.08
01-26 52.72
01-27 51.56
01-28 49.77
01-29 46.56
01-30 40.96
01-31 37.46
02-01 36.77
02-02 33.25
02-03 31.56
02-04 31.45
02-05 34.2
02-06 29.89
02-07 35.71
02-08 35.88
02-09 33.75
02-10 31.94
02-11 32.11
02-12 34.89
02-13 38.57
02-14 33.72
02-15 33.05
02-16 35.21
02-17 34.96
02-18 37.12
02-19 36.99
02-20 33.64
02-21 33.19
02-22 31.86
02-23 35.04
02-24 36.13
02-25 38.38
02-26 37.42
02-27 35.84
02-28 38.79
02-29 35.55
03-01 40.06
03-02 40.09
03-03 49.51
03-04 47.81
03-05 45.24
03-06 46.21
03-07 51.99
03-08 55.06
03-09 53.25
03-10 49.52
03-11 54.43
03-12 56.49
03-13 55.35
03-14 55.86
03-15 66.29
03-16 63.31
03-17 65.08
03-18 59.14
03-19 50.26
03-20 49.9
03-21 49.17
03-22 48.71
03-23 47.29
03-24 57.12
03-25 57.77
03-26 52.09
03-27 49.61
03-28 49.77
03-29 61.89
03-30 64.27
03-31 71.41
04-01 72.11
04-02 70.95
04-03 61.61
04-04 74.42
04-05 76.31
04-06 68.05
04-07 68.41
04-08 66.57
04-09 60.49
04-10 58.44
04-11 52.35
04-12 46.27
04-13 47.34
04-14 46.46
04-15 48.22
04-16 47.1
04-17 62.12
04-18 55.45
04-19 50.01
04-20 48.63
04-21 47.49
04-22 45.36
04-23 52.82
04-24 59.99
04-25 48.67
04-26 51.73
04-27 58.82
04-28 55.88
04-29 49.37
04-30 49.88
05-01 52.5
05-02 53.87
05-03 49.98
05-04 45.69
05-05 45.0
05-06 45.25
05-07 42.47
05-08 36.51
05-09 34.09
05-10 36.35
05-11 39.4
05-12 34.13
05-13 31.22
05-14 26.32
05-15 28.06
05-16 34.31
05-17 33.96
05-18 32.86
05-19 29.81
05-20 28.96
05-21 32.76
05-22 29.91
05-23 36.06
05-24 33.88
05-25 31.13
05-26 29.72
05-27 27.56
05-28 25.35
05-29 27.57
05-30 27.6
05-31 27.62
06-01 26.17
06-02 25.15
06-03 28.57
06-04 23.95
06-05 21.22
06-06 25.93
06-07 24.09
06-08 31.11
06-09 29.27
06-10 26.09
06-11 29.01
06-12 34.43
06-13 30.72
06-14 32.38
06-15 35.77
06-16 31.62
06-17 29.45
06-18 29.46
06-19 30.26
06-20 28.74
06-21 28.3
06-22 27.81
06-23 28.67
06-24 27.88
06-25 26.26
06-26 26.15
06-27 22.3
06-28 29.73
06-29 37.91
06-30 25.79
07-01 23.07
07-02 27.45
07-03 27.58
07-04 29.46
07-05 27.06
07-06 24.17
07-07 23.55
07-08 30.69
07-09 26.84
07-10 38.2
07-11 35.33
07-12 31.76
07-13 36.82
07-14 33.88
07-15 30.18
07-16 30.84
07-17 37.4
07-18 33.59
07-19 33.61
07-20 30.48
07-21 30.59
07-22 32.42
07-23 30.78
07-24 29.52
07-25 26.87
07-26 27.89
07-27 26.51
07-28 27.59
07-29 27.91
07-30 29.3
07-31 25.39
08-01 27.37
08-02 24.97
08-03 26.86
08-04 25.45
08-05 25.63
08-06 26.87
08-07 25.72
08-08 33.42
08-09 35.45
08-10 34.07
08-11 32.49
08-12 27.51
08-13 27.05
08-14 25.91
08-15 25.09
08-16 31.81
08-17 30.84
08-18 28.28
08-19 31.51
08-20 36.93
08-21 35.26
08-22 35.95
08-23 34.14
08-24 37.78
08-25 35.68
08-26 41.69
08-27 35.21
08-28 33.73
08-29 42.74
08-30 34.41
08-31 32.26
09-01 29.18
09-02 46.32
09-03 52.93
09-04 40.38
09-05 34.31
09-06 32.98
09-07 35.21
09-08 28.43
09-09 29.84
09-10 31.49
09-11 32.03
09-12 30.04
09-13 32.63
09-14 31.49
09-15 28.86
09-16 26.8
09-17 25.3
09-18 24.36
09-19 41.52
09-20 35.83
09-21 29.8
09-22 25.3
09-23 24.28
09-24 24.84
09-25 23.37
09-26 27.37
09-27 25.11
09-28 20.06
09-29 24.36
09-30 26.95
10-01 36.17
10-02 27.55
10-03 24.83
10-04 23.1
10-05 28.96
10-06 29.84
10-07 27.34
10-08 24.63
10-09 22.63
10-10 21.92
10-11 19.89
10-12 17.89
10-13 17.94
10-14 18.53
10-15 19.74
10-16 16.69
10-17 22.16
10-18 19.34
10-19 17.61
10-20 21.83
10-21 27.32
10-22 27.03
10-23 23.39
10-24 24.25
10-25 22.23
10-26 21.72
10-27 27.11
10-28 30.87
10-29 27.14
10-30 38.79
10-31 36.22
11-01 33.11
11-02 29.92
11-03 25.57
11-04 25.25
11-05 22.13
11-06 19.75
11-07 23.42
11-08 21.06
11-09 20.44
11-10 24.56
11-11 23.38
11-12 21.35
11-13 23.51
11-14 29.05
11-15 25.76
11-16 26.47
11-17 32.71
11-18 30.92
11-19 25.13
11-20 29.69
11-21 28.8
11-22 27.95
11-23 23.84
11-24 30.2
11-25 33.28
11-26 26.7
11-27 32.9
11-28 35.74
11-29 31.09
11-30 28.55
12-01 36.06
12-02 36.17
12-03 36.0
12-04 33.86
12-05 29.31
12-06 32.16
12-07 34.59
12-08 34.74
12-09 37.19
12-10 47.11
12-11 51.93
12-12 52.53
12-13 40.92
12-14 41.37
12-15 39.0
12-16 39.65
12-17 42.64
12-18 44.56
12-19 61.59
12-20 53.55
12-21 47.77
12-22 45.51
12-23 44.08
12-24 49.05
12-25 46.68
12-26 56.13
12-27 46.5
12-28 53.56
12-29 53.33
12-30 51.23
12-31 49.63

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index