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Air Quality Alert
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The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 12 to 400 PM Monday July 13 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will allow ozone to reach the Unhealthy for Sensitive Groups category on Sunday and Monday. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 13, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.

Bear Creek Above Evergreen 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 45.5
01-02 36.55
01-03 44.3
01-26 17.9
01-27 17.9
01-28 17.9
01-29 17.9
01-30 17.9
01-31 17.9
02-01 16.4
02-02 16.4
02-03 16.4
02-04 16.4
02-05 16.4
02-06 16.4
02-07 16.4
03-04 15.4
03-05 12.7
03-06 14.7
03-07 14.7
03-08 8.14
03-09 8.14
03-10 14.7
03-11 9.31
03-12 8.96
03-13 8.48
03-14 13.75
03-15 12.46
03-16 9.79
03-17 15.09
03-18 13.43
03-19 11.67
03-20 13.86
03-21 16.93
03-22 16.33
03-23 15.45
03-24 17.67
03-25 15.47
03-26 16.37
03-27 17.11
03-28 16.59
03-29 17.21
03-30 19.01
03-31 18.56
04-01 17.79
04-02 16.78
04-03 17.25
04-04 18.21
04-05 20.38
04-06 19.04
04-07 18.08
04-08 19.28
04-09 19.4
04-10 19.58
04-11 19.94
04-12 18.89
04-13 18.47
04-14 17.75
04-15 18.48
04-16 17.72
04-17 16.35
04-18 17.16
04-19 18.89
04-20 19.76
04-21 21.45
04-22 24.05
04-23 27.53
04-24 29.73
04-25 30.4
04-26 31.66
04-27 32.18
04-28 31.18
04-29 31.72
04-30 28.94
05-01 32.97
05-02 34.75
05-03 38.55
05-04 34.83
05-05 55.63
05-06 54.89
05-07 51.47
05-08 56.55
05-09 62.03
05-10 66.28
05-11 63.08
05-12 66.05
05-13 62.01
05-14 67.18
05-15 68.86
05-16 69.96
05-17 68.03
05-18 64.05
05-19 69.88
05-20 73.19
05-21 71.93
05-22 71.81
05-23 78.8
05-24 79.41
05-25 81.17
05-26 78.33
05-27 76.53
05-28 77.63
05-29 75.81
05-30 73.97
05-31 71.89
06-01 77.18
06-02 74.57
06-03 74.35
06-04 76.72
06-05 75.51
06-06 84.76
06-07 83.89
06-08 83.23
06-09 80.93
06-10 77.22
06-11 79.41
06-12 56.2
06-13 55.08
06-14 54.3
06-15 70.18
06-16 79.52
06-17 79.03
06-18 78.22
06-19 71.54
06-20 70.24
06-21 67.96
06-22 77.71
06-23 72.1
06-24 65.84
06-25 73.36
06-26 61.82
06-27 59.76
06-28 55.61
06-29 53.17
06-30 51.51
07-01 51.45
07-02 55.57
07-03 50.02
07-04 46.84
07-05 52.7
07-06 59.46
07-07 54.2
07-08 55.56
07-09 59.13
07-10 52.18
07-11 47.73
07-12 38.79
07-13 47.42
07-14 53.97
07-15 52.34
07-16 49.21
07-17 46.84
07-18 43.12
07-19 41.26
07-20 42.76
07-21 46.15
07-22 41.29
07-23 37.7
07-24 46.69
07-25 41.84
07-26 42.46
07-27 42.38
07-28 39.1
07-29 37.41
07-30 36.3
07-31 43.59
08-01 47.46
08-02 39.96
08-03 41.16
08-04 41.14
08-05 37.13
08-06 36.66
08-07 35.2
08-08 38.83
08-09 35.77
08-10 31.87
08-11 32.75
08-12 31.98
08-13 30.38
08-14 31.45
08-15 31.64
08-16 31.47
08-17 32.98
08-18 27.28
08-19 26.15
08-20 26.61
08-21 28.51
08-22 26.77
08-23 28.92
08-24 29.88
08-25 28.3
08-26 30.38
08-27 32.11
08-28 30.63
08-29 28.72
08-30 27.29
08-31 27.83
09-01 26.02
09-02 25.59
09-03 24.37
09-04 24.1
09-05 23.7
09-06 26.76
09-07 24.28
09-08 23.88
09-09 23.72
09-10 24.84
09-11 36.21
09-12 45.34
09-13 79.51
09-14 88.25
09-15 75.37
09-16 107.28
09-17 82.44
09-18 67.88
09-19 56.49
09-20 50.06
09-21 45.15
09-22 43.73
09-23 40.58
09-24 38.93
09-25 35.17
09-26 33.33
09-27 32.64
09-28 32.93
09-29 30.84
09-30 31.79
10-01 30.41
10-02 29.02
10-03 28.58
10-04 27.63
10-05 27.69
10-06 26.46
10-07 27.64
10-08 25.32
10-09 23.89
10-10 24.8
10-11 24.61
10-12 24.04
10-13 23.51
10-14 22.79
10-15 22.62
10-16 22.97
10-17 21.35
10-18 21.07
10-19 20.21
10-20 20.78
10-21 20.92
10-22 21.41
10-23 20.48
10-24 19.62
10-25 19.07
10-26 20.07
10-27 19.5
10-28 19.96
10-29 20.36
10-30 20.26
10-31 19.92
11-01 20.45
11-02 20.11
11-03 19.81
11-04 19.36
11-05 19.96
11-06 18.74
11-07 19.12
11-08 18.15
11-09 19.35
11-10 18.34
11-11 18.23
11-12 17.55
11-13 18.82
11-14 19.23
11-15 18.99
11-16 19.7
11-17 19.98
11-18 17.2
11-19 15.48
11-20 20.17
11-21 17.78
11-22 14.09
11-23 14.77
11-24 15.01
11-25 12.96
11-26 15.1
11-27 19.28
11-28 21.93
11-29 25.34
11-30 26.37
12-01 19.88
12-02 22.05
12-03 16.78
12-04 18.64
12-05 16.78
12-06 16.92
12-07 16.43
12-08 17.57
12-09 16.63
12-10 17.17
12-11 13.45
12-12 16.06
12-13 18.73
12-14 20.77
12-15 19.49
12-16 19.27
12-17 27.3
12-18 29.5
12-19 25.27
12-20 26.4
12-21 25.03
12-22 23.93
12-23 23.93
12-24 25.82
12-25 23.77
12-26 28.33
12-27 25.97
12-28 27.3
12-29 22.98
12-30 30.2
12-31 42.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index