Overview Realtime Historical Map View
Flood Watch
2026-07-17T22:00:00-06:00

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest Wyoming, including the following area, Yellowstone National Park. * WHEN...Until 10 PM MDT this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Heavy rainfall from slow moving showers and thunderstorms may bring local flooding. - http://www.weather.gov/safety/flood

Gardner River Near Mammoth Ynp 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 95.06
01-02 94.38
01-03 94.92
01-04 97.1
01-05 97.68
01-06 96.19
01-07 97.07
01-08 96.61
01-09 96.45
01-10 96.68
01-11 95.32
01-12 94.24
01-13 94.42
01-14 94.82
01-15 95.46
01-16 96.63
01-17 97.24
01-18 98.21
01-19 98.38
01-20 97.67
01-21 96.27
01-22 96.93
01-23 96.75
01-24 93.79
01-25 93.73
01-26 93.1
01-27 94.31
01-28 93.35
01-29 93.07
01-30 92.49
01-31 93.16
02-01 94.94
02-02 93.44
02-03 93.14
02-04 91.96
02-05 92.61
02-06 93.13
02-07 94.78
02-08 92.87
02-09 94.87
02-10 92.41
02-11 89.87
02-12 89.91
02-13 91.4
02-14 93.24
02-15 92.71
02-16 91.31
02-17 90.94
02-18 90.65
02-19 89.79
02-20 90.55
02-21 91.99
02-22 87.51
02-23 90.17
02-24 93.08
02-25 92.2
02-26 91.02
02-27 88.76
02-28 89.3
02-29 91.6
03-01 89.05
03-02 89.58
03-03 93.05
03-04 90.5
03-05 89.96
03-06 94.51
03-07 92.73
03-08 92.02
03-09 91.26
03-10 91.78
03-11 91.89
03-12 93.0
03-13 94.05
03-14 95.01
03-15 95.42
03-16 97.02
03-17 97.35
03-18 97.92
03-19 101.84
03-20 105.35
03-21 106.39
03-22 106.38
03-23 108.45
03-24 106.93
03-25 107.29
03-26 111.35
03-27 110.68
03-28 111.41
03-29 112.14
03-30 111.53
03-31 114.3
04-01 117.35
04-02 114.64
04-03 113.94
04-04 114.39
04-05 115.68
04-06 115.5
04-07 115.69
04-08 121.0
04-09 121.65
04-10 126.53
04-11 128.37
04-12 140.45
04-13 141.71
04-14 144.86
04-15 135.98
04-16 133.99
04-17 132.89
04-18 138.55
04-19 145.08
04-20 149.62
04-21 165.89
04-22 179.17
04-23 201.46
04-24 204.45
04-25 212.87
04-26 223.26
04-27 234.57
04-28 228.36
04-29 227.5
04-30 235.0
05-01 249.47
05-02 259.43
05-03 259.93
05-04 287.93
05-05 321.13
05-06 347.27
05-07 377.4
05-08 367.07
05-09 418.33
05-10 385.86
05-11 443.53
05-12 457.13
05-13 433.07
05-14 469.93
05-15 513.38
05-16 582.14
05-17 619.21
05-18 603.07
05-19 605.33
05-20 625.79
05-21 590.33
05-22 605.0
05-23 650.87
05-24 653.2
05-25 674.27
05-26 657.13
05-27 666.93
05-28 676.73
05-29 715.27
05-30 720.07
05-31 722.27
06-01 728.13
06-02 738.27
06-03 740.33
06-04 743.87
06-05 766.29
06-06 810.0
06-07 822.86
06-08 790.33
06-09 747.33
06-10 726.87
06-11 662.93
06-12 657.54
06-13 724.21
06-14 702.29
06-15 626.07
06-16 577.33
06-17 563.8
06-18 554.13
06-19 584.64
06-20 564.57
06-21 531.14
06-22 513.29
06-23 504.07
06-24 500.5
06-25 519.38
06-26 500.23
06-27 483.08
06-28 481.0
06-29 476.23
06-30 450.5
07-01 420.71
07-02 400.21
07-03 377.36
07-04 369.36
07-05 345.93
07-06 341.13
07-07 335.29
07-08 317.07
07-09 308.36
07-10 280.53
07-11 268.07
07-12 272.0
07-13 254.77
07-14 244.2
07-15 241.13
07-16 236.87
07-17 230.47
07-18 223.86
07-19 215.79
07-20 208.21
07-21 203.71
07-22 206.92
07-23 198.92
07-24 190.93
07-25 186.86
07-26 182.29
07-27 177.79
07-28 179.5
07-29 178.36
07-30 179.0
07-31 170.14
08-01 165.83
08-02 163.08
08-03 165.14
08-04 163.71
08-05 163.64
08-06 166.0
08-07 162.57
08-08 161.85
08-09 158.38
08-10 155.92
08-11 152.29
08-12 149.3
08-13 144.81
08-14 146.24
08-15 142.8
08-16 141.71
08-17 142.02
08-18 140.27
08-19 141.25
08-20 139.71
08-21 145.09
08-22 141.09
08-23 143.55
08-24 140.63
08-25 138.72
08-26 134.73
08-27 134.6
08-28 142.08
08-29 134.71
08-30 131.7
08-31 138.22
09-01 136.31
09-02 133.23
09-03 129.39
09-04 130.03
09-05 128.89
09-06 128.03
09-07 127.6
09-08 127.06
09-09 128.04
09-10 129.11
09-11 125.81
09-12 125.61
09-13 122.54
09-14 122.74
09-15 125.53
09-16 125.49
09-17 127.41
09-18 127.84
09-19 126.91
09-20 124.68
09-21 128.11
09-22 128.01
09-23 127.81
09-24 125.24
09-25 123.81
09-26 121.8
09-27 122.66
09-28 125.73
09-29 123.37
09-30 126.08
10-01 125.95
10-02 124.8
10-03 126.65
10-04 124.65
10-05 126.02
10-06 124.04
10-07 122.99
10-08 120.76
10-09 118.76
10-10 117.71
10-11 117.14
10-12 122.4
10-13 120.11
10-14 119.44
10-15 119.8
10-16 120.58
10-17 124.11
10-18 119.31
10-19 118.06
10-20 118.76
10-21 115.42
10-22 116.43
10-23 119.07
10-24 116.39
10-25 116.39
10-26 116.18
10-27 116.99
10-28 115.19
10-29 118.06
10-30 119.69
10-31 120.76
11-01 129.73
11-02 122.54
11-03 120.76
11-04 118.73
11-05 116.23
11-06 117.44
11-07 118.05
11-08 118.69
11-09 117.25
11-10 114.73
11-11 108.58
11-12 107.83
11-13 107.28
11-14 110.63
11-15 111.88
11-16 111.33
11-17 111.89
11-18 108.28
11-19 110.03
11-20 110.26
11-21 106.83
11-22 107.66
11-23 109.59
11-24 108.82
11-25 104.08
11-26 105.6
11-27 106.05
11-28 109.38
11-29 104.6
11-30 102.71
12-01 105.92
12-02 106.61
12-03 106.79
12-04 107.54
12-05 104.35
12-06 101.52
12-07 103.32
12-08 102.49
12-09 102.57
12-10 101.71
12-11 104.32
12-12 104.82
12-13 103.77
12-14 105.31
12-15 105.67
12-16 101.82
12-17 100.08
12-18 100.89
12-19 99.07
12-20 99.02
12-21 100.25
12-22 100.0
12-23 100.07
12-24 101.29
12-25 100.74
12-26 101.11
12-27 98.95
12-28 96.71
12-29 94.6
12-30 93.64
12-31 92.85

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index