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Air Quality Alert
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An Air Quality Alert has been issued by the following agencies: Washington Department of Ecology Spokane Regional Clean Air Agency An Air Quality Alert continues for Spokane, Ferry, Lincoln, Okanogan, Pend Oreille, and Stevens Counties, effective immediately through Wednesday, July 22nd at 9 AM, due to current and expected wildfire smoke from regional fires. Particulate matter (PM2.5) levels are expected to range in the Unhealthy for Sensitive Groups and Unhealthy categories. In Eastern Okanogan County near active wildfires, air quality may reach Very Unhealthy to Hazardous levels. When air quality is Unhealthy, everyone should reduce exposure. Limit time outside, avoid strenuous activity, and follow tips for cleaner indoor air.

Methow River Above Goat Creek Near Mazama, 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
01-01 242.74
01-02 251.0
01-03 200.32
01-04 263.02
01-05 214.4
01-06 206.05
01-07 196.28
01-08 170.19
01-09 212.16
01-10 176.18
01-11 171.05
01-12 161.83
01-13 213.77
01-14 323.2
01-15 323.02
01-16 260.64
01-17 275.36
01-18 267.86
01-19 258.04
01-20 418.12
01-21 244.23
01-22 198.53
01-23 190.93
01-24 175.43
01-25 187.1
01-26 184.33
01-27 166.69
01-28 191.65
01-29 117.18
01-30 101.56
01-31 141.05
02-01 144.57
02-02 174.95
02-03 169.48
02-04 176.63
02-05 186.96
02-06 197.65
02-07 187.01
02-08 187.48
02-09 221.24
02-10 212.93
02-11 212.33
02-12 247.67
02-13 242.33
02-14 247.33
02-15 258.33
02-16 253.67
02-17 218.39
02-18 219.27
02-19 209.84
02-20 204.99
02-21 198.39
02-22 172.43
02-23 164.65
02-24 162.11
02-25 179.33
02-26 158.43
02-27 153.53
02-28 157.68
02-29 128.33
03-01 151.93
03-02 155.26
03-03 149.07
03-04 148.59
03-05 146.53
03-06 149.89
03-07 166.94
03-08 189.84
03-09 197.35
03-10 198.53
03-11 193.13
03-12 195.76
03-13 197.6
03-14 201.74
03-15 255.34
03-16 256.77
03-17 249.82
03-18 298.69
03-19 287.21
03-20 403.46
03-21 553.65
03-22 583.68
03-23 492.17
03-24 467.09
03-25 433.4
03-26 403.16
03-27 408.33
03-28 453.13
03-29 473.09
03-30 441.92
03-31 458.55
04-01 477.42
04-02 524.42
04-03 576.0
04-04 574.77
04-05 614.83
04-06 595.58
04-07 601.08
04-08 675.75
04-09 708.83
04-10 707.57
04-11 732.07
04-12 737.92
04-13 720.54
04-14 647.53
04-15 548.67
04-16 560.98
04-17 581.53
04-18 602.39
04-19 671.89
04-20 791.47
04-21 1177.01
04-22 1368.94
04-23 1453.58
04-24 1474.57
04-25 1452.23
04-26 1341.29
04-27 1339.71
04-28 1318.73
04-29 1406.36
04-30 1540.62
05-01 1357.0
05-02 1649.93
05-03 1974.93
05-04 2222.07
05-05 2507.33
05-06 2781.0
05-07 2733.67
05-08 2776.29
05-09 2768.6
05-10 2411.5
05-11 2712.0
05-12 2910.0
05-13 2899.33
05-14 2928.92
05-15 3379.77
05-16 3442.86
05-17 3630.71
05-18 3372.0
05-19 3142.86
05-20 3034.62
05-21 2880.0
05-22 3012.14
05-23 3024.36
05-24 3086.93
05-25 2741.43
05-26 2666.43
05-27 2506.0
05-28 2573.33
05-29 2748.0
05-30 2776.67
05-31 2829.33
06-01 2692.0
06-02 2611.43
06-03 2658.67
06-04 2627.33
06-05 2402.86
06-06 2490.71
06-07 2498.57
06-08 2488.57
06-09 2316.8
06-10 2140.67
06-11 1977.8
06-12 1891.43
06-13 1894.71
06-14 1864.21
06-15 1689.87
06-16 1598.93
06-17 1576.87
06-18 1610.93
06-19 1668.64
06-20 1646.93
06-21 1748.71
06-22 1745.07
06-23 1782.64
06-24 1750.36
06-25 1679.07
06-26 1608.5
06-27 1626.08
06-28 1478.71
06-29 1454.36
06-30 1521.15
07-01 1373.71
07-02 1369.77
07-03 1220.86
07-04 1203.69
07-05 1016.07
07-06 956.47
07-07 1011.64
07-08 1037.5
07-09 951.14
07-10 880.93
07-11 840.29
07-12 800.07
07-13 780.21
07-14 689.67
07-15 625.67
07-16 615.14
07-17 574.93
07-18 552.44
07-19 528.21
07-20 482.95
07-21 487.62
07-22 462.84
07-23 413.94
07-24 388.86
07-25 364.3
07-26 352.55
07-27 348.37
07-28 323.65
07-29 304.37
07-30 302.66
07-31 265.37
08-01 271.85
08-02 238.43
08-03 215.96
08-04 214.25
08-05 200.28
08-06 194.99
08-07 184.52
08-08 183.06
08-09 171.75
08-10 170.24
08-11 145.53
08-12 140.49
08-13 135.83
08-14 140.51
08-15 128.11
08-16 123.93
08-17 119.48
08-18 110.67
08-19 98.89
08-20 92.75
08-21 87.7
08-22 84.38
08-23 81.69
08-24 82.42
08-25 71.26
08-26 66.31
08-27 62.24
08-28 58.92
08-29 53.44
08-30 57.21
08-31 59.92
09-01 51.85
09-02 48.11
09-03 45.19
09-04 43.43
09-05 40.64
09-06 39.23
09-07 71.07
09-08 64.52
09-09 55.47
09-10 49.97
09-11 46.59
09-12 43.68
09-13 43.79
09-14 38.87
09-15 37.45
09-16 34.92
09-17 46.21
09-18 34.51
09-19 34.14
09-20 30.97
09-21 33.78
09-22 29.22
09-23 27.45
09-24 27.64
09-25 30.93
09-26 30.23
09-27 37.43
09-28 36.12
09-29 46.07
09-30 55.1
10-01 69.45
10-02 59.42
10-03 57.64
10-04 56.18
10-05 51.76
10-06 52.16
10-07 55.81
10-08 61.71
10-09 67.51
10-10 64.19
10-11 56.81
10-12 56.0
10-13 53.58
10-14 51.13
10-15 59.85
10-16 59.74
10-17 64.3
10-18 65.35
10-19 68.02
10-20 69.61
10-21 80.26
10-22 77.85
10-23 82.39
10-24 85.84
10-25 84.97
10-26 103.49
10-27 110.94
10-28 113.61
10-29 114.51
10-30 121.64
10-31 122.89
11-01 145.49
11-02 130.84
11-03 142.41
11-04 143.29
11-05 186.74
11-06 223.7
11-07 222.66
11-08 208.64
11-09 192.74
11-10 183.82
11-11 170.24
11-12 162.16
11-13 198.71
11-14 189.8
11-15 409.42
11-16 505.94
11-17 387.97
11-18 378.56
11-19 337.4
11-20 289.49
11-21 275.92
11-22 251.93
11-23 252.64
11-24 208.03
11-25 196.91
11-26 262.8
11-27 227.81
11-28 214.18
11-29 249.62
11-30 211.13
12-01 247.59
12-02 341.43
12-03 320.44
12-04 292.7
12-05 264.17
12-06 283.1
12-07 268.56
12-08 263.24
12-09 274.5
12-10 263.49
12-11 688.09
12-12 529.59
12-13 477.66
12-14 442.26
12-15 371.86
12-16 569.76
12-17 519.4
12-18 489.7
12-19 433.94
12-20 385.07
12-21 320.36
12-22 305.66
12-23 291.44
12-24 257.76
12-25 238.64
12-26 330.4
12-27 278.0
12-28 1527.17
12-29 316.0
12-30 242.82
12-31 204.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index