Overview Realtime Historical Map View
Flood Watch
2026-08-15T22:00:00-06:00

* WHAT...Flash Flooding caused by excessive rainfall is possible. * WHERE...Portions of central and northeast Colorado, including the following areas; the southern Front Range Foothills, Palmer Divide area, I-25 corridor, and all of our eastern plains counties. * WHEN...From this afternoon through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Additional thunderstorms and heavy rainfall this afternoon, combined with the heavy rainfall from the past 3 days, will bring a threat for flash flooding this afternoon and evening. Stronger storms will be capable of producing 1 to 2 inches of rain in 30 minutes, with isolated areas receiving storm totals of 3+ inches.

South Platte River Below Cheesman Lake, Co. Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010
01-01 132.98
01-02 125.69
01-03 123.27
01-04 127.91
01-05 125.71
01-06 128.61
01-07 125.16
01-08 123.37
01-09 123.56
01-10 125.36
01-11 131.61
01-12 137.47
01-13 136.29
01-14 136.35
01-15 130.29
01-16 131.58
01-17 143.76
01-18 140.76
01-19 137.33
01-20 132.84
01-21 133.09
01-22 132.13
01-23 140.59
01-24 135.71
01-25 132.57
01-26 131.13
01-27 137.81
01-28 134.43
01-29 129.04
01-30 121.65
01-31 125.02
02-01 125.61
02-02 129.21
02-03 131.07
02-04 121.92
02-05 122.81
02-06 126.54
02-07 124.38
02-08 121.78
02-09 122.71
02-10 128.51
02-11 117.58
02-12 113.35
02-13 114.91
02-14 115.65
02-15 109.91
02-16 117.63
02-17 114.02
02-18 113.21
02-19 119.28
02-20 120.42
02-21 123.7
02-22 123.65
02-23 122.32
02-24 126.19
02-25 121.1
02-26 132.64
02-27 131.35
02-28 129.06
02-29 154.5
03-01 131.33
03-02 127.06
03-03 133.49
03-04 137.3
03-05 133.33
03-06 133.59
03-07 133.16
03-08 127.31
03-09 131.2
03-10 135.86
03-11 132.31
03-12 121.71
03-13 129.38
03-14 127.75
03-15 125.19
03-16 123.49
03-17 120.83
03-18 114.53
03-19 114.9
03-20 117.81
03-21 115.58
03-22 107.69
03-23 109.29
03-24 106.15
03-25 100.09
03-26 100.85
03-27 101.76
03-28 101.84
03-29 107.29
03-30 97.94
03-31 97.07
04-01 96.99
04-02 104.85
04-03 117.2
04-04 111.95
04-05 108.61
04-06 112.57
04-07 115.61
04-08 118.61
04-09 128.46
04-10 129.12
04-11 127.85
04-12 142.55
04-13 136.88
04-14 135.87
04-15 125.76
04-16 125.41
04-17 119.92
04-18 125.19
04-19 131.93
04-20 139.87
04-21 135.63
04-22 139.05
04-23 144.24
04-24 148.83
04-25 150.87
04-26 155.13
04-27 157.43
04-28 150.2
04-29 148.63
04-30 154.31
05-01 159.53
05-02 161.94
05-03 183.19
05-04 170.68
05-05 160.59
05-06 163.18
05-07 167.81
05-08 172.05
05-09 153.39
05-10 160.33
05-11 162.21
05-12 171.74
05-13 168.7
05-14 201.04
05-15 215.19
05-16 226.84
05-17 215.33
05-18 215.49
05-19 245.98
05-20 248.29
05-21 238.21
05-22 223.48
05-23 268.06
05-24 271.23
05-25 262.49
05-26 233.84
05-27 234.76
05-28 221.77
05-29 215.88
05-30 216.87
05-31 236.04
06-01 241.89
06-02 258.58
06-03 225.78
06-04 236.13
06-05 241.86
06-06 238.8
06-07 248.06
06-08 262.38
06-09 248.86
06-10 282.83
06-11 270.51
06-12 293.05
06-13 327.44
06-14 323.79
06-15 347.37
06-16 354.8
06-17 358.39
06-18 362.16
06-19 378.06
06-20 381.74
06-21 351.65
06-22 346.61
06-23 355.63
06-24 348.98
06-25 325.49
06-26 350.51
06-27 324.17
06-28 350.84
06-29 341.98
06-30 347.23
07-01 368.04
07-02 357.7
07-03 385.25
07-04 335.37
07-05 369.41
07-06 394.05
07-07 381.81
07-08 380.52
07-09 378.93
07-10 385.13
07-11 400.06
07-12 374.86
07-13 394.21
07-14 354.78
07-15 375.37
07-16 387.55
07-17 376.9
07-18 368.91
07-19 364.04
07-20 339.23
07-21 332.97
07-22 343.13
07-23 352.79
07-24 339.93
07-25 338.68
07-26 324.24
07-27 323.93
07-28 301.99
07-29 324.4
07-30 325.25
07-31 330.8
08-01 336.93
08-02 310.87
08-03 336.43
08-04 324.04
08-05 348.43
08-06 352.0
08-07 357.25
08-08 345.88
08-09 345.13
08-10 348.63
08-11 348.8
08-12 347.63
08-13 340.4
08-14 323.4
08-15 337.13
08-16 346.64
08-17 356.86
08-18 350.14
08-19 354.64
08-20 323.79
08-21 328.54
08-22 312.2
08-23 300.2
08-24 295.36
08-25 291.77
08-26 281.29
08-27 281.0
08-28 289.27
08-29 277.57
08-30 269.86
08-31 275.0
09-01 272.86
09-02 280.57
09-03 282.93
09-04 278.79
09-05 266.36
09-06 264.29
09-07 268.36
09-08 254.71
09-09 247.57
09-10 241.0
09-11 243.07
09-12 232.73
09-13 219.66
09-14 211.87
09-15 210.56
09-16 214.88
09-17 222.84
09-18 228.2
09-19 235.14
09-20 232.53
09-21 226.53
09-22 222.64
09-23 221.2
09-24 225.4
09-25 225.53
09-26 198.73
09-27 210.55
09-28 228.44
09-29 223.8
09-30 212.93
10-01 214.47
10-02 200.8
10-03 196.97
10-04 191.94
10-05 176.53
10-06 202.64
10-07 193.13
10-08 197.95
10-09 192.73
10-10 195.08
10-11 165.57
10-12 174.95
10-13 147.88
10-14 148.63
10-15 124.16
10-16 148.42
10-17 127.33
10-18 128.0
10-19 114.89
10-20 120.71
10-21 125.89
10-22 129.36
10-23 122.46
10-24 118.67
10-25 113.14
10-26 109.66
10-27 105.73
10-28 103.76
10-29 100.61
10-30 98.37
10-31 98.46
11-01 92.92
11-02 95.56
11-03 88.63
11-04 87.96
11-05 85.52
11-06 92.29
11-07 94.95
11-08 94.96
11-09 92.06
11-10 89.35
11-11 84.43
11-12 82.15
11-13 88.41
11-14 89.71
11-15 86.87
11-16 88.83
11-17 85.95
11-18 87.68
11-19 88.22
11-20 86.27
11-21 88.88
11-22 89.72
11-23 84.38
11-24 90.76
11-25 93.56
11-26 97.23
11-27 98.89
11-28 101.64
11-29 103.12
11-30 108.02
12-01 104.15
12-02 110.71
12-03 113.61
12-04 115.69
12-05 129.24
12-06 133.45
12-07 135.58
12-08 138.02
12-09 126.51
12-10 121.51
12-11 122.14
12-12 116.5
12-13 111.69
12-14 118.52
12-15 117.32
12-16 126.69
12-17 119.35
12-18 120.54
12-19 119.55
12-20 125.17
12-21 125.84
12-22 127.89
12-23 125.61
12-24 127.9
12-25 123.14
12-26 113.77
12-27 113.62
12-28 113.2
12-29 116.68
12-30 127.74
12-31 125.83

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index