Overview Realtime Historical Map View
Flood Watch
2026-09-13T20:00:00-07:00

* WHAT...Debris and ash flows, rock slides, and minor flooding caused by excessive rainfall is possible, especially near burn scars. * WHERE...A portion of North Central Washington, including the following areas and counties, Central Chelan County, Okanogan Highlands, Okanogan Valley, Wenatchee Area, Western Chelan County and Western Okanogan County. * WHEN...From 1 AM PDT Sunday through Sunday evening. * IMPACTS...Excessive runoff may result in debris and ash flows over burn scars in steep terrain. Rock slides will be possible. Minor flooding in urban areas where there is poor drainage. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - A slow moving storm system will bring persistent bands of rain through Central Washington. Moderate to heavy rain intensities are expected at times. Rainfall amounts will range between 0.50 and 1.50 inches with locally around 2.00 inches in southern Chelan County - This includes but is not limited to the following burn scars: Modrite, Kaiser Canyon, Sinlahekin, Chelan Falls, Little Giant, Sisi, Labor Mountain, and Pioneer. - http://www.weather.gov/safety/flood

Twisp River Near Twisp, Wa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 211.33
01-02 210.0
01-03 208.0
01-04 203.33
01-05 193.33
01-06 187.67
01-07 183.67
01-08 182.67
01-09 199.5
01-10 147.1
01-11 154.68
01-12 153.55
01-13 204.93
01-14 246.22
01-15 236.4
01-16 240.9
01-17 225.45
01-18 226.55
01-19 226.3
01-20 259.8
01-21 246.43
01-22 235.33
01-23 205.0
01-24 195.25
01-25 219.25
01-26 240.0
01-27 192.0
01-28 131.33
01-29 130.33
01-30 105.33
01-31 175.17
02-01 182.4
02-02 496.33
02-03 199.43
02-04 249.42
02-05 181.02
02-06 181.38
02-07 174.48
02-08 150.9
02-09 155.33
02-10 152.69
02-11 138.84
02-12 139.42
02-13 144.3
02-14 146.97
02-15 171.06
02-16 166.71
02-17 155.72
02-18 155.8
02-19 154.47
02-20 152.71
02-21 141.17
02-22 134.04
02-23 129.58
02-24 128.32
02-25 130.38
02-26 117.54
02-27 127.79
02-28 130.51
02-29 123.5
03-01 118.74
03-02 126.19
03-03 126.26
03-04 127.1
03-05 126.42
03-06 125.51
03-07 133.54
03-08 141.41
03-09 143.38
03-10 145.16
03-11 143.43
03-12 143.66
03-13 147.89
03-14 144.28
03-15 158.87
03-16 162.79
03-17 163.41
03-18 173.98
03-19 189.13
03-20 234.79
03-21 299.39
03-22 255.29
03-23 233.16
03-24 230.63
03-25 231.5
03-26 232.55
03-27 230.62
03-28 246.07
03-29 251.4
03-30 250.84
03-31 249.11
04-01 261.87
04-02 281.65
04-03 300.03
04-04 311.1
04-05 328.76
04-06 319.57
04-07 328.5
04-08 361.43
04-09 376.54
04-10 385.47
04-11 400.93
04-12 398.07
04-13 391.86
04-14 383.64
04-15 329.69
04-16 335.15
04-17 335.08
04-18 353.77
04-19 391.23
04-20 423.46
04-21 567.21
04-22 640.71
04-23 625.29
04-24 625.79
04-25 629.0
04-26 605.64
04-27 610.0
04-28 612.64
04-29 634.0
04-30 685.31
05-01 695.53
05-02 733.71
05-03 830.86
05-04 933.4
05-05 1018.47
05-06 1108.67
05-07 1066.53
05-08 1071.07
05-09 1061.73
05-10 936.5
05-11 1008.27
05-12 1086.4
05-13 1101.13
05-14 1102.08
05-15 1267.23
05-16 1346.43
05-17 1382.36
05-18 1267.0
05-19 1241.36
05-20 1170.71
05-21 1149.5
05-22 1139.0
05-23 1131.53
05-24 1167.6
05-25 1088.8
05-26 1075.6
05-27 1058.33
05-28 1055.33
05-29 1113.2
05-30 1132.53
05-31 1122.13
06-01 1062.27
06-02 1062.57
06-03 1091.2
06-04 1060.87
06-05 974.5
06-06 985.43
06-07 996.93
06-08 1016.64
06-09 942.47
06-10 895.27
06-11 851.93
06-12 845.0
06-13 838.64
06-14 812.93
06-15 743.4
06-16 691.8
06-17 686.07
06-18 699.67
06-19 722.36
06-20 722.86
06-21 754.57
06-22 754.14
06-23 782.0
06-24 746.21
06-25 702.93
06-26 663.43
06-27 645.36
06-28 635.71
06-29 633.86
06-30 627.43
07-01 580.07
07-02 559.07
07-03 529.86
07-04 517.92
07-05 447.47
07-06 425.13
07-07 445.29
07-08 457.93
07-09 418.86
07-10 380.87
07-11 365.28
07-12 355.69
07-13 346.27
07-14 316.53
07-15 299.39
07-16 293.91
07-17 271.9
07-18 266.3
07-19 256.77
07-20 232.86
07-21 227.72
07-22 214.74
07-23 204.75
07-24 190.08
07-25 181.09
07-26 174.39
07-27 171.23
07-28 164.03
07-29 153.87
07-30 151.69
07-31 136.97
08-01 129.91
08-02 126.2
08-03 121.73
08-04 113.89
08-05 111.99
08-06 107.48
08-07 102.75
08-08 101.41
08-09 96.97
08-10 94.87
08-11 88.29
08-12 85.35
08-13 85.92
08-14 85.35
08-15 84.57
08-16 79.83
08-17 78.63
08-18 78.9
08-19 69.01
08-20 68.31
08-21 66.28
08-22 65.01
08-23 62.27
08-24 64.55
08-25 58.86
08-26 56.91
08-27 55.17
08-28 53.71
08-29 52.31
08-30 54.93
08-31 52.61
09-01 52.54
09-02 50.96
09-03 49.72
09-04 49.61
09-05 48.49
09-06 48.65
09-07 65.11
09-08 60.01
09-09 56.82
09-10 53.4
09-11 52.14
09-12 50.41
09-13 48.5
09-14 48.64
09-15 48.56
09-16 48.64
09-17 48.5
09-18 48.3
09-19 48.44
09-20 47.26
09-21 47.32
09-22 45.16
09-23 45.69
09-24 45.1
09-25 46.55
09-26 47.82
09-27 50.35
09-28 50.58
09-29 51.75
09-30 59.28
10-01 59.9
10-02 58.21
10-03 60.7
10-04 57.15
10-05 57.12
10-06 58.11
10-07 57.86
10-08 60.75
10-09 69.81
10-10 68.61
10-11 67.63
10-12 66.81
10-13 66.86
10-14 69.59
10-15 71.06
10-16 70.92
10-17 72.21
10-18 75.27
10-19 77.35
10-20 79.25
10-21 84.07
10-22 79.45
10-23 82.94
10-24 82.89
10-25 85.09
10-26 87.75
10-27 86.83
10-28 87.9
10-29 88.24
10-30 93.89
10-31 112.81
11-01 102.71
11-02 106.57
11-03 102.36
11-04 103.32
11-05 125.22
11-06 149.19
11-07 143.75
11-08 135.73
11-09 125.92
11-10 122.49
11-11 119.83
11-12 113.75
11-13 137.76
11-14 137.4
11-15 184.26
11-16 202.06
11-17 163.25
11-18 155.65
11-19 155.51
11-20 163.61
11-21 149.12
11-22 134.95
11-23 135.25
11-24 130.75
11-25 156.67
11-26 157.89
11-27 148.93
11-28 157.03
11-29 164.9
11-30 247.75
12-01 148.47
12-02 198.53
12-03 190.99
12-04 171.74
12-05 162.97
12-06 208.29
12-07 223.14
12-08 189.67
12-09 217.71
12-10 203.25
12-11 444.67
12-12 413.22
12-13 372.5
12-14 312.07
12-15 263.64
12-16 422.83
12-17 391.33
12-18 363.2
12-19 287.43
12-20 249.19
12-21 242.48
12-22 482.15
12-23 229.58
12-24 227.2
12-25 213.82
12-26 214.2
12-27 250.25
12-28 213.75
12-29 214.0
12-30 236.67
12-31 206.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index