Overview Realtime Historical Map View
Heat Advisory
2026-08-03T20:00:00-06:00

* WHAT...Temperatures climbing into the lower to mid 90s. * WHERE...The San Luis Valley. * WHEN...From 9 AM to 8 PM MDT Monday. * IMPACTS...Hot temperatures can cause heat illness.

Rio Grande At Alamosa, 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
01-01 303.62
01-02 301.85
01-03 304.5
01-04 308.62
01-05 310.46
01-06 321.58
01-07 315.69
01-08 318.54
01-09 327.77
01-10 336.15
01-11 332.77
01-12 327.77
01-13 330.15
01-14 339.62
01-15 321.22
01-16 319.93
01-17 325.86
01-18 328.14
01-19 328.57
01-20 306.93
01-21 307.67
01-22 308.07
01-23 330.29
01-24 327.0
01-25 301.75
01-26 301.08
01-27 300.15
01-28 300.2
01-29 300.08
01-30 296.01
01-31 303.6
02-01 305.54
02-02 323.07
02-03 329.76
02-04 323.37
02-05 314.07
02-06 315.33
02-07 307.37
02-08 300.78
02-09 299.19
02-10 330.07
02-11 296.6
02-12 290.78
02-13 298.72
02-14 285.81
02-15 284.08
02-16 286.13
02-17 264.48
02-18 256.83
02-19 251.72
02-20 249.95
02-21 254.95
02-22 252.45
02-23 242.89
02-24 242.28
02-25 241.33
02-26 248.35
02-27 246.31
02-28 245.59
02-29 254.25
03-01 253.2
03-02 243.53
03-03 250.38
03-04 247.0
03-05 240.94
03-06 241.06
03-07 243.19
03-08 240.67
03-09 258.81
03-10 255.87
03-11 262.82
03-12 274.33
03-13 277.63
03-14 285.63
03-15 299.06
03-16 313.12
03-17 333.27
03-18 352.8
03-19 362.88
03-20 356.88
03-21 361.53
03-22 365.38
03-23 363.75
03-24 376.33
03-25 357.53
03-26 353.19
03-27 359.48
03-28 363.26
03-29 427.92
03-30 351.07
03-31 350.37
04-01 340.63
04-02 292.1
04-03 224.93
04-04 187.67
04-05 166.56
04-06 129.48
04-07 117.77
04-08 112.18
04-09 107.91
04-10 94.65
04-11 90.57
04-12 93.68
04-13 96.01
04-14 96.03
04-15 105.74
04-16 110.89
04-17 133.17
04-18 139.43
04-19 157.53
04-20 156.24
04-21 148.73
04-22 140.0
04-23 162.93
04-24 151.16
04-25 148.49
04-26 165.69
04-27 177.81
04-28 144.52
04-29 179.01
04-30 198.36
05-01 194.54
05-02 163.84
05-03 227.94
05-04 219.67
05-05 231.02
05-06 228.04
05-07 223.55
05-08 237.05
05-09 218.58
05-10 261.06
05-11 241.74
05-12 185.62
05-13 202.35
05-14 224.11
05-15 244.3
05-16 287.85
05-17 335.24
05-18 305.37
05-19 178.92
05-20 318.56
05-21 236.47
05-22 306.51
05-23 272.87
05-24 319.15
05-25 289.69
05-26 242.25
05-27 279.3
05-28 288.51
05-29 295.15
05-30 311.32
05-31 312.93
06-01 339.15
06-02 290.46
06-03 345.52
06-04 328.3
06-05 337.05
06-06 346.7
06-07 365.93
06-08 403.7
06-09 396.53
06-10 328.37
06-11 450.06
06-12 385.74
06-13 295.51
06-14 439.05
06-15 437.3
06-16 263.75
06-17 375.57
06-18 384.11
06-19 364.93
06-20 333.46
06-21 344.07
06-22 339.59
06-23 331.7
06-24 320.26
06-25 190.07
06-26 317.58
06-27 186.53
06-28 293.98
06-29 296.51
06-30 281.21
07-01 287.68
07-02 297.0
07-03 313.83
07-04 202.29
07-05 298.26
07-06 317.9
07-07 280.45
07-08 156.4
07-09 248.68
07-10 256.52
07-11 272.67
07-12 226.67
07-13 224.57
07-14 135.1
07-15 194.26
07-16 155.66
07-17 180.91
07-18 162.69
07-19 168.45
07-20 154.62
07-21 108.59
07-22 165.1
07-23 162.28
07-24 141.95
07-25 128.77
07-26 142.8
07-27 146.54
07-28 105.52
07-29 146.96
07-30 144.41
07-31 152.39
08-01 87.67
08-02 141.28
08-03 156.12
08-04 94.36
08-05 150.39
08-06 146.52
08-07 159.9
08-08 134.06
08-09 138.33
08-10 153.68
08-11 88.14
08-12 135.53
08-13 145.73
08-14 77.7
08-15 122.25
08-16 75.2
08-17 76.54
08-18 70.62
08-19 102.32
08-20 100.7
08-21 63.54
08-22 82.73
08-23 91.74
08-24 103.06
08-25 69.94
08-26 96.0
08-27 90.89
08-28 91.56
08-29 68.92
08-30 73.81
08-31 81.06
09-01 57.5
09-02 74.52
09-03 71.88
09-04 75.82
09-05 61.51
09-06 59.65
09-07 70.61
09-08 56.71
09-09 71.44
09-10 68.23
09-11 67.35
09-12 74.5
09-13 68.04
09-14 77.66
09-15 77.51
09-16 93.12
09-17 84.93
09-18 80.6
09-19 89.68
09-20 88.44
09-21 83.69
09-22 76.43
09-23 81.32
09-24 104.7
09-25 89.4
09-26 90.0
09-27 95.5
09-28 95.17
09-29 102.75
09-30 115.74
10-01 120.52
10-02 98.79
10-03 101.16
10-04 105.97
10-05 113.15
10-06 97.3
10-07 96.36
10-08 99.17
10-09 91.51
10-10 93.02
10-11 89.81
10-12 108.82
10-13 116.83
10-14 104.73
10-15 119.72
10-16 131.08
10-17 126.42
10-18 95.81
10-19 88.29
10-20 95.96
10-21 89.03
10-22 90.12
10-23 89.82
10-24 85.69
10-25 88.19
10-26 79.21
10-27 81.72
10-28 79.66
10-29 76.14
10-30 77.53
10-31 80.05
11-01 77.56
11-02 155.25
11-03 256.8
11-04 238.45
11-05 257.76
11-06 236.54
11-07 259.85
11-08 218.19
11-09 229.6
11-10 205.54
11-11 206.83
11-12 216.68
11-13 201.07
11-14 197.26
11-15 193.94
11-16 210.65
11-17 225.94
11-18 220.22
11-19 219.27
11-20 220.68
11-21 231.82
11-22 239.34
11-23 233.92
11-24 228.11
11-25 228.31
11-26 231.14
11-27 251.29
11-28 251.0
11-29 252.86
11-30 257.36
12-01 253.92
12-02 242.43
12-03 268.36
12-04 271.0
12-05 277.29
12-06 284.86
12-07 267.86
12-08 262.31
12-09 257.0
12-10 255.62
12-11 274.14
12-12 269.08
12-13 281.77
12-14 277.43
12-15 269.67
12-16 274.08
12-17 293.0
12-18 291.57
12-19 291.29
12-20 290.86
12-21 290.07
12-22 287.71
12-23 295.71
12-24 306.58
12-25 298.71
12-26 298.0
12-27 300.54
12-28 302.08
12-29 294.23
12-30 292.33
12-31 306.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index