Overview Realtime Historical Map View
Red Flag Warning
2026-10-09T20:00:00-06:00

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR CENTRAL BLACK HILLS, SOUTHERN BLACK HILLS, FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, WEST CENTRAL PLAINS, BADLANDS AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, WESTON COUNTY PLAINS, AND WYOMING BLACK HILLS... The National Weather Service in Rapid City SD has issued a Red Flag Warning in effect from 11 AM to 8 PM MDT Friday. * AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, 318, 320, 321, 322, 323, 324, 325, 326, 327, 329, and 332. * TIMING...From 11 AM to 8 PM MDT Friday. * WINDS...Southwest winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

Redwater Cr At Wy-Sd State Line 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 42.36
01-02 44.28
01-03 42.02
01-04 42.05
01-05 41.9
01-06 43.34
01-07 54.42
01-08 43.01
01-09 42.85
01-10 43.09
01-11 42.48
01-12 42.08
01-13 43.67
01-14 47.46
01-15 55.49
01-16 51.5
01-17 48.94
01-18 40.49
01-19 40.69
01-20 40.75
01-21 40.59
01-22 40.75
01-23 39.94
01-24 45.13
01-25 47.85
01-26 49.09
01-27 44.0
01-28 40.39
01-29 39.89
01-30 40.48
01-31 43.88
02-01 46.13
02-02 39.22
02-03 39.64
02-04 39.8
02-05 38.82
02-06 40.83
02-07 42.73
02-08 52.43
02-09 41.35
02-10 41.2
02-11 41.45
02-12 40.45
02-13 40.58
02-14 41.15
02-15 48.43
02-16 40.5
02-17 38.63
02-18 40.44
02-19 41.32
02-20 41.32
02-21 45.2
02-22 40.33
02-23 43.74
02-24 45.52
02-25 45.37
02-26 41.9
02-27 41.52
02-28 41.39
02-29 48.23
03-01 39.89
03-02 40.08
03-03 39.98
03-04 38.68
03-05 39.92
03-06 60.78
03-07 49.97
03-08 47.09
03-09 41.33
03-10 42.44
03-11 42.84
03-12 43.52
03-13 50.18
03-14 43.11
03-15 44.17
03-16 44.39
03-17 43.51
03-18 47.46
03-19 48.06
03-20 46.68
03-21 52.99
03-22 52.2
03-23 47.64
03-24 46.11
03-25 46.32
03-26 45.95
03-27 45.83
03-28 46.4
03-29 46.41
03-30 46.79
03-31 46.08
04-01 48.89
04-02 47.75
04-03 47.97
04-04 46.69
04-05 46.99
04-06 47.16
04-07 49.53
04-08 49.93
04-09 50.88
04-10 48.87
04-11 50.43
04-12 50.13
04-13 49.71
04-14 50.76
04-15 49.56
04-16 47.68
04-17 47.04
04-18 51.82
04-19 49.9
04-20 53.48
04-21 54.98
04-22 58.73
04-23 59.0
04-24 62.06
04-25 63.8
04-26 57.91
04-27 59.33
04-28 65.01
04-29 63.58
04-30 61.26
05-01 61.65
05-02 61.12
05-03 60.97
05-04 61.35
05-05 61.99
05-06 61.78
05-07 63.72
05-08 68.44
05-09 63.97
05-10 64.18
05-11 63.99
05-12 63.08
05-13 62.47
05-14 68.91
05-15 65.44
05-16 60.34
05-17 59.4
05-18 58.61
05-19 61.03
05-20 61.79
05-21 77.78
05-22 95.15
05-23 106.51
05-24 92.12
05-25 82.09
05-26 84.1
05-27 80.51
05-28 78.96
05-29 84.99
05-30 83.52
05-31 75.55
06-01 128.57
06-02 120.67
06-03 78.57
06-04 68.44
06-05 68.02
06-06 71.96
06-07 62.74
06-08 59.19
06-09 56.53
06-10 54.69
06-11 52.53
06-12 46.65
06-13 46.7
06-14 47.02
06-15 49.04
06-16 49.36
06-17 48.78
06-18 48.73
06-19 49.21
06-20 54.54
06-21 54.54
06-22 55.92
06-23 72.42
06-24 54.44
06-25 55.13
06-26 55.07
06-27 55.89
06-28 77.57
06-29 52.65
06-30 48.86
07-01 46.99
07-02 46.66
07-03 46.09
07-04 45.62
07-05 43.66
07-06 47.1
07-07 45.32
07-08 44.18
07-09 46.72
07-10 43.72
07-11 43.51
07-12 41.82
07-13 42.04
07-14 47.21
07-15 44.46
07-16 44.18
07-17 44.4
07-18 67.43
07-19 43.08
07-20 39.53
07-21 41.12
07-22 39.57
07-23 38.91
07-24 37.88
07-25 40.12
07-26 39.62
07-27 39.08
07-28 40.9
07-29 39.85
07-30 39.47
07-31 41.75
08-01 36.78
08-02 40.23
08-03 37.45
08-04 37.38
08-05 37.29
08-06 36.49
08-07 34.96
08-08 34.7
08-09 34.6
08-10 35.08
08-11 35.79
08-12 35.27
08-13 34.36
08-14 34.69
08-15 35.46
08-16 29.24
08-17 28.88
08-18 27.82
08-19 31.88
08-20 32.26
08-21 32.38
08-22 33.35
08-23 33.55
08-24 33.09
08-25 32.67
08-26 33.69
08-27 36.02
08-28 34.49
08-29 35.07
08-30 34.75
08-31 32.59
09-01 35.75
09-02 34.38
09-03 33.59
09-04 34.45
09-05 34.31
09-06 34.67
09-07 34.61
09-08 35.81
09-09 35.95
09-10 34.75
09-11 34.65
09-12 34.53
09-13 34.84
09-14 35.21
09-15 37.34
09-16 38.25
09-17 37.99
09-18 38.29
09-19 37.93
09-20 38.27
09-21 38.48
09-22 37.69
09-23 38.88
09-24 39.49
09-25 38.87
09-26 38.85
09-27 39.65
09-28 39.36
09-29 39.9
09-30 41.54
10-01 40.88
10-02 41.11
10-03 41.65
10-04 41.42
10-05 44.13
10-06 42.75
10-07 42.7
10-08 43.5
10-09 43.89
10-10 43.84
10-11 44.06
10-12 46.36
10-13 47.36
10-14 46.41
10-15 46.92
10-16 48.97
10-17 47.64
10-18 46.26
10-19 45.56
10-20 46.74
10-21 47.77
10-22 47.37
10-23 46.95
10-24 47.23
10-25 47.21
10-26 46.79
10-27 47.16
10-28 47.48
10-29 47.31
10-30 47.71
10-31 47.15
11-01 47.1
11-02 46.95
11-03 47.67
11-04 47.54
11-05 47.82
11-06 46.92
11-07 46.36
11-08 46.42
11-09 46.36
11-10 46.5
11-11 46.31
11-12 45.62
11-13 45.74
11-14 46.29
11-15 46.24
11-16 46.21
11-17 46.12
11-18 45.81
11-19 45.98
11-20 45.86
11-21 45.87
11-22 45.15
11-23 44.49
11-24 45.64
11-25 45.66
11-26 44.58
11-27 43.98
11-28 43.31
11-29 44.26
11-30 44.02
12-01 43.54
12-02 42.8
12-03 43.11
12-04 42.98
12-05 42.9
12-06 42.72
12-07 42.76
12-08 44.86
12-09 60.35
12-10 42.72
12-11 42.67
12-12 43.12
12-13 42.75
12-14 42.33
12-15 41.86
12-16 41.97
12-17 42.09
12-18 42.27
12-19 41.93
12-20 41.62
12-21 44.71
12-22 42.95
12-23 42.55
12-24 42.42
12-25 42.06
12-26 41.55
12-27 42.58
12-28 42.93
12-29 41.56
12-30 42.32
12-31 42.45

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index