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Walnut Creek Upstream Pool Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019
01-01 89.95
01-02 452.76
01-03 246.2
01-04 247.23
01-05 226.7
01-06 64.2
01-07 126.83
01-08 94.15
01-09 79.98
01-10 124.22
01-11 150.62
01-12 82.07
01-13 175.78
01-14 88.92
01-15 95.5
01-16 214.08
01-17 60.17
01-18 110.0
01-19 98.8
01-20 178.03
01-21 94.63
01-22 78.85
01-23 91.2
01-24 76.95
01-25 58.75
01-26 141.63
01-27 98.07
01-28 77.6
01-29 94.9
01-30 99.4
01-31 64.87
02-01 51.03
02-02 44.0
02-03 51.8
02-04 69.05
02-05 52.9
02-06 46.73
02-07 43.67
02-08 72.95
02-09 54.07
02-10 77.83
02-11 96.4
02-12 51.23
02-13 46.93
02-14 39.43
02-15 106.57
02-16 194.55
02-17 38.1
02-18 36.6
02-19 88.35
02-20 46.2
02-21 34.03
02-22 32.73
02-23 150.25
02-24 67.35
02-25 44.73
02-26 65.85
02-27 72.6
02-28 125.05
02-29 85.8
03-01 236.16
03-02 49.1
03-03 94.59
03-04 131.63
03-05 75.0
03-06 132.69
03-07 91.47
03-08 107.29
03-09 58.86
03-10 74.67
03-11 76.4
03-12 104.35
03-13 69.67
03-14 56.01
03-15 69.89
03-16 53.79
03-17 101.95
03-18 68.48
03-19 93.5
03-20 90.5
03-21 77.91
03-22 54.34
03-23 49.53
03-24 79.15
03-25 50.13
03-26 63.04
03-27 116.26
03-28 64.33
03-29 66.85
03-30 57.24
03-31 165.77
04-01 161.39
04-02 113.06
04-03 91.47
04-04 83.75
04-05 131.64
04-06 107.94
04-07 83.41
04-08 61.66
04-09 56.44
04-10 57.96
04-11 67.93
04-12 103.4
04-13 47.47
04-14 51.59
04-15 70.46
04-16 93.04
04-17 88.94
04-18 60.76
04-19 101.57
04-20 79.86
04-21 57.13
04-22 73.64
04-23 64.5
04-24 50.74
04-25 47.73
04-26 83.54
04-27 64.47
04-28 50.79
04-29 45.9
04-30 82.99
05-01 66.03
05-02 127.14
05-03 114.71
05-04 113.87
05-05 63.27
05-06 148.94
05-07 72.1
05-08 51.44
05-09 41.49
05-10 84.11
05-11 42.27
05-12 43.47
05-13 40.29
05-14 34.88
05-15 49.33
05-16 68.2
05-17 38.77
05-18 32.07
05-19 34.01
05-20 37.4
05-21 33.17
05-22 114.59
05-23 77.49
05-24 47.9
05-25 36.43
05-26 31.84
05-27 30.27
05-28 43.06
05-29 42.99
05-30 38.95
05-31 27.58
06-01 23.49
06-02 25.27
06-03 22.66
06-04 22.88
06-05 19.74
06-06 28.33
06-07 22.4
06-08 24.41
06-09 23.48
06-10 55.93
06-11 40.66
06-12 40.97
06-13 24.85
06-14 38.6
06-15 78.77
06-16 34.63
06-17 38.97
06-18 27.5
06-19 30.5
06-20 52.21
06-21 73.5
06-22 28.76
06-23 34.29
06-24 27.33
06-25 25.92
06-26 19.63
06-27 38.02
06-28 31.41
06-29 19.53
06-30 17.82
07-01 77.62
07-02 36.43
07-03 26.59
07-04 19.47
07-05 18.06
07-06 13.45
07-07 16.31
07-08 13.67
07-09 13.1
07-10 10.84
07-11 11.31
07-12 24.7
07-13 20.07
07-14 19.19
07-15 12.89
07-16 44.01
07-17 46.63
07-18 63.32
07-19 21.25
07-20 18.8
07-21 47.4
07-22 15.75
07-23 27.86
07-24 13.72
07-25 69.98
07-26 15.71
07-27 32.37
07-28 17.38
07-29 27.75
07-30 31.06
07-31 16.39
08-01 17.6
08-02 16.91
08-03 11.66
08-04 12.6
08-05 20.83
08-06 11.41
08-07 15.55
08-08 25.82
08-09 24.09
08-10 14.34
08-11 12.79
08-12 12.19
08-13 14.29
08-14 19.5
08-15 9.99
08-16 10.16
08-17 11.24
08-18 19.82
08-19 19.3
08-20 14.91
08-21 13.0
08-22 72.95
08-23 20.38
08-24 19.73
08-25 60.89
08-26 13.85
08-27 11.95
08-28 13.44
08-29 23.37
08-30 11.76
08-31 9.84
09-01 10.16
09-02 14.36
09-03 10.33
09-04 9.27
09-05 10.42
09-06 14.93
09-07 10.21
09-08 10.55
09-09 8.3
09-10 9.31
09-11 6.39
09-12 64.84
09-13 14.57
09-14 119.95
09-15 14.82
09-16 15.97
09-17 11.21
09-18 9.38
09-19 9.11
09-20 17.85
09-21 10.65
09-22 9.89
09-23 26.38
09-24 11.69
09-25 19.4
09-26 67.12
09-27 99.26
09-28 132.62
09-29 37.2
09-30 18.25
10-01 9.87
10-02 12.38
10-03 21.56
10-04 16.34
10-05 16.06
10-06 23.94
10-07 15.15
10-08 51.94
10-09 16.17
10-10 19.29
10-11 13.71
10-12 11.6
10-13 13.61
10-14 26.43
10-15 17.14
10-16 27.42
10-17 40.44
10-18 59.27
10-19 41.85
10-20 140.88
10-21 45.57
10-22 41.92
10-23 74.42
10-24 109.1
10-25 143.88
10-26 39.92
10-27 86.92
10-28 38.27
10-29 35.57
10-30 65.62
10-31 138.36
11-01 102.53
11-02 52.87
11-03 46.98
11-04 35.53
11-05 31.52
11-06 58.13
11-07 37.67
11-08 61.92
11-09 29.36
11-10 43.64
11-11 36.36
11-12 159.14
11-13 136.36
11-14 86.58
11-15 63.9
11-16 89.6
11-17 74.78
11-18 88.42
11-19 72.8
11-20 63.58
11-21 50.45
11-22 57.14
11-23 88.45
11-24 55.6
11-25 53.27
11-26 129.9
11-27 73.93
11-28 96.3
11-29 62.45
11-30 50.67
12-01 191.58
12-02 99.57
12-03 88.73
12-04 116.9
12-05 63.83
12-06 58.2
12-07 67.02
12-08 51.52
12-09 45.26
12-10 87.08
12-11 69.58
12-12 72.14
12-13 62.6
12-14 49.98
12-15 108.24
12-16 47.5
12-17 45.34
12-18 48.92
12-19 74.6
12-20 77.97
12-21 60.93
12-22 46.2
12-23 53.9
12-24 83.36
12-25 88.57
12-26 99.8
12-27 119.63
12-28 92.18
12-29 160.6
12-30 111.7
12-31 169.26

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index