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Squannacook River Near West Groton, 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
01-01 162.46
01-02 171.39
01-03 170.67
01-04 149.89
01-05 140.67
01-06 134.5
01-07 124.97
01-08 120.93
01-09 109.57
01-10 122.82
01-11 192.99
01-12 171.18
01-13 185.63
01-14 263.21
01-15 212.42
01-16 192.4
01-17 196.2
01-18 162.46
01-19 150.69
01-20 139.4
01-21 149.31
01-22 140.12
01-23 129.45
01-24 126.93
01-25 199.56
01-26 216.63
01-27 282.13
01-28 262.8
01-29 225.15
01-30 166.53
01-31 135.63
02-01 161.74
02-02 140.17
02-03 130.04
02-04 123.96
02-05 163.55
02-06 125.75
02-07 130.94
02-08 127.4
02-09 121.58
02-10 116.92
02-11 114.09
02-12 155.06
02-13 155.85
02-14 124.3
02-15 119.64
02-16 116.68
02-17 115.24
02-18 144.08
02-19 162.14
02-20 140.1
02-21 129.1
02-22 109.34
02-23 128.49
02-24 153.16
02-25 154.12
02-26 226.21
02-27 175.19
02-28 192.76
02-29 223.5
03-01 164.06
03-02 140.7
03-03 176.06
03-04 194.8
03-05 150.37
03-06 146.03
03-07 188.8
03-08 229.86
03-09 187.17
03-10 181.78
03-11 217.3
03-12 208.25
03-13 210.08
03-14 212.46
03-15 196.31
03-16 208.08
03-17 215.83
03-18 207.15
03-19 181.28
03-20 172.35
03-21 164.14
03-22 159.69
03-23 158.5
03-24 181.0
03-25 201.21
03-26 188.93
03-27 183.64
03-28 200.21
03-29 223.4
03-30 243.6
03-31 319.57
04-01 301.33
04-02 273.93
04-03 247.0
04-04 252.67
04-05 281.58
04-06 269.03
04-07 254.47
04-08 252.91
04-09 266.64
04-10 238.22
04-11 221.74
04-12 193.91
04-13 184.39
04-14 208.13
04-15 199.77
04-16 193.04
04-17 224.31
04-18 216.77
04-19 180.46
04-20 178.28
04-21 158.19
04-22 176.39
04-23 174.07
04-24 218.71
04-25 172.18
04-26 148.74
04-27 189.88
04-28 210.13
04-29 167.71
04-30 164.21
05-01 199.69
05-02 252.27
05-03 191.41
05-04 169.68
05-05 158.94
05-06 235.59
05-07 200.33
05-08 152.95
05-09 147.02
05-10 162.05
05-11 209.85
05-12 148.49
05-13 123.05
05-14 103.57
05-15 97.07
05-16 111.7
05-17 133.49
05-18 126.23
05-19 118.75
05-20 105.22
05-21 102.46
05-22 98.6
05-23 98.94
05-24 113.75
05-25 111.16
05-26 118.32
05-27 138.02
05-28 102.11
05-29 87.43
05-30 85.45
05-31 83.1
06-01 96.74
06-02 84.06
06-03 100.65
06-04 100.49
06-05 77.99
06-06 80.11
06-07 109.25
06-08 104.17
06-09 107.43
06-10 84.89
06-11 72.47
06-12 94.15
06-13 89.13
06-14 77.17
06-15 93.35
06-16 76.01
06-17 62.02
06-18 62.59
06-19 67.02
06-20 62.62
06-21 54.91
06-22 55.92
06-23 53.59
06-24 72.21
06-25 63.37
06-26 60.33
06-27 59.74
06-28 63.81
06-29 78.2
06-30 71.43
07-01 55.68
07-02 66.96
07-03 83.26
07-04 84.98
07-05 97.37
07-06 73.62
07-07 56.81
07-08 48.12
07-09 47.42
07-10 51.29
07-11 73.06
07-12 64.71
07-13 79.46
07-14 64.11
07-15 51.39
07-16 47.98
07-17 111.15
07-18 70.74
07-19 69.76
07-20 56.36
07-21 44.41
07-22 53.73
07-23 62.85
07-24 58.66
07-25 48.88
07-26 42.32
07-27 37.83
07-28 37.54
07-29 41.07
07-30 40.69
07-31 45.51
08-01 38.35
08-02 32.55
08-03 32.81
08-04 29.64
08-05 29.97
08-06 29.34
08-07 27.52
08-08 29.49
08-09 27.59
08-10 29.58
08-11 38.79
08-12 36.56
08-13 48.86
08-14 36.95
08-15 55.75
08-16 48.49
08-17 46.49
08-18 40.24
08-19 36.58
08-20 39.4
08-21 33.19
08-22 33.15
08-23 38.18
08-24 47.92
08-25 54.44
08-26 41.23
08-27 33.49
08-28 29.5
08-29 61.25
08-30 48.2
08-31 34.48
09-01 28.16
09-02 31.41
09-03 75.47
09-04 41.6
09-05 30.58
09-06 27.92
09-07 32.77
09-08 56.15
09-09 74.41
09-10 58.95
09-11 51.45
09-12 81.04
09-13 61.92
09-14 52.44
09-15 42.35
09-16 35.85
09-17 33.35
09-18 30.33
09-19 166.53
09-20 84.83
09-21 52.71
09-22 42.9
09-23 40.16
09-24 44.44
09-25 58.18
09-26 65.6
09-27 73.76
09-28 71.07
09-29 50.82
09-30 74.21
10-01 89.86
10-02 55.66
10-03 45.39
10-04 40.44
10-05 73.54
10-06 79.04
10-07 59.63
10-08 52.17
10-09 50.17
10-10 45.55
10-11 43.6
10-12 48.47
10-13 57.65
10-14 52.94
10-15 58.11
10-16 54.29
10-17 56.88
10-18 62.35
10-19 56.38
10-20 40.75
10-21 69.48
10-22 63.95
10-23 59.68
10-24 86.55
10-25 77.93
10-26 59.98
10-27 88.66
10-28 94.04
10-29 107.37
10-30 103.65
10-31 156.47
11-01 184.42
11-02 132.15
11-03 130.34
11-04 89.1
11-05 119.18
11-06 97.29
11-07 103.48
11-08 96.52
11-09 80.0
11-10 83.0
11-11 97.25
11-12 98.33
11-13 107.04
11-14 131.95
11-15 106.41
11-16 89.14
11-17 89.78
11-18 92.62
11-19 88.32
11-20 84.16
11-21 82.53
11-22 77.52
11-23 75.86
11-24 102.33
11-25 99.97
11-26 92.46
11-27 102.74
11-28 149.53
11-29 113.56
11-30 92.94
12-01 118.72
12-02 132.08
12-03 127.74
12-04 126.01
12-05 121.14
12-06 110.78
12-07 113.27
12-08 125.63
12-09 171.92
12-10 133.38
12-11 181.09
12-12 197.93
12-13 148.23
12-14 136.42
12-15 183.81
12-16 133.98
12-17 130.57
12-18 140.72
12-19 271.78
12-20 184.67
12-21 151.02
12-22 157.24
12-23 168.77
12-24 267.08
12-25 210.61
12-26 248.51
12-27 202.92
12-28 159.77
12-29 173.01
12-30 160.09
12-31 162.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index