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Hydrologic Outlook
None

ESFRIW A wet weather system will support periods of showers and thunderstorms across Wyoming Friday, Saturday, and Sunday. This weather system is funneling abundant tropical moisture into the state. Given this anomalously high moisture, many thunderstorms will feature heavy rainfall, possibly leading to localized flooding. Poor drainage areas, urban areas, and steep terrain will be the most susceptible locations for this isolated flooding. Many locations could see rainfall totals anywhere between 0.75" to 1.75" through Sunday afternoon, with a majority of this rain falling quickly in thunderstorms. Remember, if you encounter a flooded roadway, turn around don't down!

Bull Lake Creek Above Bull Lake, Wy 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 36.54
01-02 38.62
01-03 37.09
01-04 36.39
01-05 33.6
01-06 33.07
01-07 33.93
01-08 32.82
01-09 32.84
01-10 32.05
01-11 33.21
01-12 33.23
01-13 31.9
01-14 31.15
01-15 30.26
01-16 30.54
01-17 31.72
01-18 32.49
01-19 30.71
01-20 30.28
01-21 27.88
01-22 27.75
01-23 29.28
01-24 27.52
01-25 27.25
01-26 26.48
01-27 26.22
01-28 25.85
01-29 27.48
01-30 25.75
01-31 25.73
02-01 24.14
02-02 24.62
02-03 24.86
02-04 25.03
02-05 25.74
02-06 25.56
02-07 25.33
02-08 25.86
02-09 26.43
02-10 26.16
02-11 26.45
02-12 27.36
02-13 25.33
02-14 25.43
02-15 25.84
02-16 24.57
02-17 24.28
02-18 25.68
02-19 26.25
02-20 23.17
02-21 24.55
02-22 25.53
02-23 25.8
02-24 24.81
02-25 25.56
02-26 21.92
02-27 25.98
02-28 25.69
02-29 24.93
03-01 26.44
03-02 25.62
03-03 27.99
03-04 26.51
03-05 26.9
03-06 28.27
03-07 28.81
03-08 28.88
03-09 29.46
03-10 28.15
03-11 27.51
03-12 27.53
03-13 27.57
03-14 26.03
03-15 27.4
03-16 29.55
03-17 29.23
03-18 30.63
03-19 37.83
03-20 44.01
03-21 44.33
03-22 47.46
03-23 47.19
03-24 48.15
03-25 46.94
03-26 53.05
03-27 51.21
03-28 50.05
03-29 51.76
03-30 53.26
03-31 55.91
04-01 60.11
04-02 60.92
04-03 58.01
04-04 59.05
04-05 56.65
04-06 54.83
04-07 55.37
04-08 61.63
04-09 63.32
04-10 64.14
04-11 67.35
04-12 78.58
04-13 86.98
04-14 90.07
04-15 80.78
04-16 74.01
04-17 76.06
04-18 79.82
04-19 84.17
04-20 79.02
04-21 87.07
04-22 94.88
04-23 116.02
04-24 123.98
04-25 125.89
04-26 138.29
04-27 154.8
04-28 164.33
04-29 166.64
04-30 188.09
05-01 200.71
05-02 211.85
05-03 214.46
05-04 235.8
05-05 264.33
05-06 301.07
05-07 338.33
05-08 330.07
05-09 375.33
05-10 379.0
05-11 398.13
05-12 426.0
05-13 500.07
05-14 426.79
05-15 504.29
05-16 544.14
05-17 602.36
05-18 589.4
05-19 595.2
05-20 605.43
05-21 585.27
05-22 573.73
05-23 597.53
05-24 625.2
05-25 653.67
05-26 656.13
05-27 690.47
05-28 739.4
05-29 779.79
05-30 818.43
05-31 871.36
06-01 1010.07
06-02 1087.71
06-03 1153.71
06-04 1249.21
06-05 1298.15
06-06 1443.62
06-07 1601.77
06-08 1687.71
06-09 1521.86
06-10 1416.21
06-11 1323.07
06-12 1293.29
06-13 1249.85
06-14 1231.92
06-15 1126.57
06-16 1098.07
06-17 1136.21
06-18 1351.64
06-19 1311.92
06-20 1186.31
06-21 1078.0
06-22 1104.14
06-23 1056.62
06-24 1005.14
06-25 974.79
06-26 1005.43
06-27 1042.5
06-28 1063.71
06-29 1087.07
06-30 1192.93
07-01 1171.5
07-02 1038.86
07-03 960.21
07-04 975.86
07-05 981.87
07-06 964.6
07-07 977.57
07-08 967.14
07-09 968.36
07-10 882.6
07-11 844.6
07-12 855.29
07-13 790.64
07-14 762.2
07-15 747.67
07-16 729.93
07-17 718.53
07-18 713.47
07-19 720.87
07-20 748.5
07-21 702.4
07-22 713.15
07-23 650.0
07-24 609.43
07-25 594.46
07-26 575.69
07-27 526.21
07-28 512.93
07-29 481.0
07-30 483.0
07-31 468.2
08-01 438.5
08-02 413.46
08-03 439.8
08-04 426.93
08-05 427.07
08-06 432.64
08-07 425.0
08-08 432.23
08-09 402.46
08-10 380.38
08-11 354.14
08-12 338.0
08-13 326.36
08-14 317.5
08-15 326.0
08-16 326.5
08-17 314.0
08-18 296.33
08-19 301.62
08-20 298.15
08-21 293.85
08-22 275.83
08-23 290.29
08-24 297.15
08-25 286.69
08-26 271.92
08-27 260.86
08-28 259.43
08-29 246.67
08-30 253.13
08-31 255.29
09-01 250.8
09-02 236.13
09-03 230.13
09-04 211.5
09-05 211.79
09-06 207.29
09-07 199.0
09-08 190.46
09-09 186.14
09-10 176.07
09-11 167.14
09-12 166.5
09-13 177.0
09-14 180.53
09-15 179.4
09-16 191.59
09-17 191.4
09-18 184.33
09-19 200.0
09-20 194.56
09-21 179.57
09-22 168.76
09-23 172.89
09-24 165.21
09-25 158.79
09-26 150.61
09-27 146.64
09-28 145.52
09-29 163.09
09-30 194.96
10-01 193.91
10-02 179.51
10-03 172.72
10-04 175.62
10-05 164.71
10-06 161.14
10-07 157.46
10-08 151.42
10-09 145.47
10-10 141.0
10-11 133.24
10-12 128.71
10-13 126.03
10-14 120.51
10-15 120.21
10-16 116.65
10-17 115.81
10-18 115.18
10-19 110.4
10-20 110.51
10-21 109.83
10-22 104.62
10-23 103.71
10-24 101.28
10-25 99.64
10-26 102.56
10-27 108.74
10-28 100.77
10-29 97.25
10-30 106.96
10-31 104.85
11-01 113.08
11-02 107.13
11-03 99.23
11-04 96.28
11-05 89.72
11-06 88.95
11-07 86.92
11-08 85.11
11-09 81.35
11-10 80.13
11-11 77.73
11-12 71.2
11-13 73.96
11-14 70.71
11-15 68.05
11-16 66.81
11-17 66.52
11-18 66.32
11-19 69.52
11-20 66.31
11-21 64.11
11-22 64.82
11-23 65.04
11-24 60.91
11-25 56.1
11-26 58.54
11-27 58.31
11-28 59.81
11-29 57.06
11-30 50.9
12-01 52.68
12-02 51.96
12-03 52.9
12-04 52.48
12-05 53.71
12-06 46.6
12-07 46.76
12-08 45.49
12-09 45.28
12-10 44.98
12-11 46.47
12-12 44.79
12-13 45.71
12-14 45.92
12-15 44.79
12-16 43.7
12-17 40.59
12-18 39.21
12-19 41.33
12-20 39.4
12-21 38.97
12-22 39.05
12-23 40.2
12-24 38.6
12-25 41.22
12-26 44.18
12-27 41.07
12-28 39.14
12-29 38.44
12-30 39.77
12-31 38.69

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index