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Air Quality Alert
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The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Wildfire Smoke. WHERE...Delta, Montrose, Ouray, San Miguel, Hinsdale and San Juan Counties. Locations include, but are not limited to Delta, Montrose, Ouray, Telluride, Lake City and Silverton. WHEN...900 AM Wednesday July 15 to 900 AM Thursday July 16 IMPACTS...Moderate to heavy smoke from the Gold Mountain Fire and Elk Fire is possible throughout the advisory area through at least Thursday morning. HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.

Dolores River Near Slick Rock, 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
01-28 23.0
01-29 25.0
01-30 27.0
01-31 34.0
02-01 28.0
02-02 25.5
02-03 27.5
02-04 26.5
02-05 23.0
02-06 19.5
02-07 23.0
02-08 24.0
02-09 20.5
02-10 22.67
02-11 23.0
02-12 20.0
02-13 22.33
02-14 26.0
02-15 32.33
02-16 29.33
02-17 28.0
02-18 29.0
02-19 26.67
02-20 34.75
02-21 35.0
02-22 27.5
02-23 31.5
02-24 36.5
02-25 31.5
02-26 29.25
02-27 30.75
02-28 31.5
02-29 74.5
03-01 30.96
03-02 29.07
03-03 35.25
03-04 36.55
03-05 38.1
03-06 37.48
03-07 40.52
03-08 47.26
03-09 44.4
03-10 43.58
03-11 41.27
03-12 47.07
03-13 60.55
03-14 57.05
03-15 49.18
03-16 52.19
03-17 55.21
03-18 52.27
03-19 99.73
03-20 76.02
03-21 79.03
03-22 86.46
03-23 90.59
03-24 87.58
03-25 77.84
03-26 90.46
03-27 92.01
03-28 93.57
03-29 97.41
03-30 105.84
03-31 121.32
04-01 146.87
04-02 153.76
04-03 160.09
04-04 157.31
04-05 169.42
04-06 103.38
04-07 182.13
04-08 178.68
04-09 151.53
04-10 226.75
04-11 251.27
04-12 277.79
04-13 335.34
04-14 319.31
04-15 296.89
04-16 231.42
04-17 182.68
04-18 285.15
04-19 356.89
04-20 322.97
04-21 200.51
04-22 186.11
04-23 167.2
04-24 177.26
04-25 194.47
04-26 141.14
04-27 118.89
04-28 148.54
04-29 141.38
04-30 165.41
05-01 240.21
05-02 230.69
05-03 182.68
05-04 215.91
05-05 236.67
05-06 268.92
05-07 485.7
05-08 264.82
05-09 434.39
05-10 426.22
05-11 364.78
05-12 356.38
05-13 363.53
05-14 335.77
05-15 358.66
05-16 385.61
05-17 381.34
05-18 390.55
05-19 387.11
05-20 422.06
05-21 400.13
05-22 395.46
05-23 402.59
05-24 378.25
05-25 358.55
05-26 356.48
05-27 362.32
05-28 372.5
05-29 329.87
05-30 296.1
05-31 288.13
06-01 259.07
06-02 245.38
06-03 286.09
06-04 355.73
06-05 448.04
06-06 471.07
06-07 481.54
06-08 457.35
06-09 463.71
06-10 507.64
06-11 517.79
06-12 576.87
06-13 687.03
06-14 648.07
06-15 579.17
06-16 528.88
06-17 449.76
06-18 390.8
06-19 323.99
06-20 300.58
06-21 352.4
06-22 360.15
06-23 365.69
06-24 305.84
06-25 242.71
06-26 212.31
06-27 188.1
06-28 191.0
06-29 155.43
06-30 230.18
07-01 216.0
07-02 185.6
07-03 189.04
07-04 168.69
07-05 147.33
07-06 115.91
07-07 119.2
07-08 89.09
07-09 84.75
07-10 78.89
07-11 64.06
07-12 85.03
07-13 79.9
07-14 84.42
07-15 67.02
07-16 59.9
07-17 50.07
07-18 52.99
07-19 49.55
07-20 49.72
07-21 78.47
07-22 74.77
07-23 46.7
07-24 51.5
07-25 65.56
07-26 102.96
07-27 56.41
07-28 52.31
07-29 85.21
07-30 60.5
07-31 49.73
08-01 56.47
08-02 50.59
08-03 89.57
08-04 61.64
08-05 46.99
08-06 101.21
08-07 79.4
08-08 49.51
08-09 45.93
08-10 43.25
08-11 44.99
08-12 47.67
08-13 58.72
08-14 48.79
08-15 67.98
08-16 78.1
08-17 46.74
08-18 39.41
08-19 42.95
08-20 95.38
08-21 45.42
08-22 41.92
08-23 46.53
08-24 56.78
08-25 86.02
08-26 58.35
08-27 84.75
08-28 64.85
08-29 52.65
08-30 51.37
08-31 46.82
09-01 76.23
09-02 46.8
09-03 49.91
09-04 42.69
09-05 45.44
09-06 45.51
09-07 43.83
09-08 44.72
09-09 45.34
09-10 91.43
09-11 61.88
09-12 54.28
09-13 57.38
09-14 40.87
09-15 92.14
09-16 39.4
09-17 34.14
09-18 45.55
09-19 34.94
09-20 33.39
09-21 27.68
09-22 36.26
09-23 60.82
09-24 34.81
09-25 30.15
09-26 27.51
09-27 27.54
09-28 27.43
09-29 43.82
09-30 35.57
10-01 29.9
10-02 48.8
10-03 32.48
10-04 30.25
10-05 29.92
10-06 46.15
10-07 109.83
10-08 39.43
10-09 33.43
10-10 31.93
10-11 91.0
10-12 39.17
10-13 33.33
10-14 32.33
10-15 31.67
10-16 32.83
10-17 33.17
10-18 32.67
10-19 32.67
10-20 34.17
10-21 49.15
10-22 40.07
10-23 42.57
10-24 32.58
10-25 32.2
10-26 48.0
10-27 37.33
10-28 35.67
10-29 35.0
10-30 35.33
10-31 38.17
11-01 37.67
11-02 35.8
11-03 36.0
11-04 27.83
11-05 35.83
11-06 32.67
11-07 28.33
11-08 25.33
11-09 23.67
11-10 23.17
11-11 27.0
11-12 25.5
11-13 24.83
11-14 24.5
11-15 25.33
11-16 26.17
11-17 32.17
11-18 23.5
11-19 23.75
11-20 23.25
11-21 24.8
11-22 26.6
11-23 31.4
11-24 34.0
11-25 30.6
11-26 26.5
11-27 25.6
11-28 26.0
11-29 26.25
11-30 27.25
12-01 28.67
12-02 24.0
12-03 24.0
12-04 23.33
12-05 22.67
12-06 20.0
12-07 24.0
12-08 23.5
12-09 23.0
12-10 23.0
12-11 17.0
12-12 19.5
12-13 21.0
12-14 20.5
12-15 29.0
12-16 28.0
12-17 26.0
12-18 33.0
12-19 26.0
12-20 25.0
12-21 20.0
12-22 29.0
12-23 31.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index