Overview Realtime Historical Map View

Arkansas River At Portland, Co. Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017
01-01 532.8
01-02 562.17
01-03 1103.0
01-04 753.8
01-05 671.67
01-06 349.0
01-07 427.83
01-08 323.83
01-09 321.83
01-10 302.67
01-11 302.0
01-12 300.5
01-13 558.83
01-14 602.8
01-15 637.5
01-16 652.33
01-17 612.17
01-18 681.33
01-19 664.83
01-20 579.29
01-21 590.71
01-22 568.86
01-23 555.5
01-24 551.83
01-25 510.38
01-26 575.0
01-27 411.71
01-28 358.38
01-29 337.75
01-30 347.25
01-31 717.56
02-01 412.67
02-02 395.78
02-03 358.63
02-04 339.0
02-05 310.38
02-06 283.0
02-07 308.44
02-08 307.44
02-09 332.22
02-10 357.33
02-11 329.11
02-12 340.78
02-13 340.89
02-14 454.43
02-15 447.14
02-16 451.11
02-17 552.14
02-18 473.38
02-19 500.67
02-20 481.22
02-21 465.89
02-22 469.33
02-23 348.13
02-24 352.71
02-25 315.86
02-26 361.13
02-27 340.44
02-28 334.0
02-29 371.5
03-01 339.29
03-02 321.89
03-03 316.13
03-04 333.88
03-05 308.13
03-06 305.25
03-07 292.75
03-08 276.43
03-09 288.88
03-10 280.29
03-11 290.78
03-12 290.0
03-13 307.11
03-14 329.0
03-15 350.75
03-16 349.67
03-17 304.71
03-18 346.63
03-19 351.75
03-20 354.75
03-21 355.88
03-22 443.6
03-23 372.75
03-24 309.17
03-25 360.88
03-26 366.14
03-27 357.0
03-28 344.5
03-29 343.17
03-30 364.25
03-31 344.57
04-01 345.38
04-02 325.5
04-03 315.75
04-04 304.13
04-05 323.43
04-06 324.13
04-07 297.43
04-08 326.88
04-09 243.71
04-10 305.44
04-11 311.88
04-12 308.75
04-13 277.88
04-14 240.0
04-15 278.88
04-16 279.63
04-17 299.67
04-18 307.78
04-19 309.22
04-20 321.67
04-21 280.86
04-22 268.43
04-23 289.38
04-24 285.63
04-25 289.22
04-26 315.75
04-27 296.88
04-28 298.5
04-29 336.75
04-30 345.25
05-01 317.0
05-02 287.57
05-03 352.17
05-04 359.86
05-05 447.0
05-06 509.0
05-07 465.63
05-08 468.14
05-09 453.33
05-10 618.83
05-11 656.57
05-12 717.14
05-13 741.29
05-14 718.5
05-15 600.4
05-16 776.17
05-17 1063.67
05-18 1035.63
05-19 1142.33
05-20 1131.13
05-21 1113.75
05-22 1120.25
05-23 950.86
05-24 1070.0
05-25 1088.71
05-26 1132.0
05-27 1052.86
05-28 1111.88
05-29 1165.63
05-30 1288.75
05-31 1416.75
06-01 1516.75
06-02 1407.14
06-03 1746.5
06-04 1836.43
06-05 1797.25
06-06 1809.0
06-07 1994.14
06-08 1791.86
06-09 1902.38
06-10 1998.71
06-11 1812.75
06-12 1739.13
06-13 1712.88
06-14 1621.38
06-15 1475.14
06-16 1490.5
06-17 1563.5
06-18 1599.63
06-19 1611.63
06-20 1594.0
06-21 1747.86
06-22 1734.29
06-23 1531.87
06-24 1520.29
06-25 1297.0
06-26 1403.43
06-27 1269.63
06-28 1284.29
06-29 1206.86
06-30 1024.75
07-01 1008.5
07-02 968.29
07-03 896.0
07-04 868.36
07-05 854.13
07-06 914.33
07-07 794.43
07-08 801.2
07-09 724.85
07-10 703.5
07-11 700.57
07-12 705.63
07-13 807.0
07-14 809.29
07-15 897.86
07-16 1103.25
07-17 1139.14
07-18 1035.38
07-19 1041.57
07-20 956.38
07-21 805.83
07-22 1076.86
07-23 1102.33
07-24 1302.13
07-25 969.25
07-26 1051.5
07-27 968.88
07-28 807.86
07-29 919.5
07-30 1275.5
07-31 1029.29
08-01 1153.4
08-02 851.33
08-03 946.14
08-04 859.86
08-05 967.57
08-06 825.75
08-07 783.75
08-08 844.13
08-09 791.88
08-10 848.14
08-11 684.14
08-12 716.0
08-13 711.0
08-14 660.29
08-15 693.25
08-16 641.0
08-17 607.57
08-18 548.43
08-19 517.63
08-20 472.0
08-21 377.67
08-22 435.75
08-23 417.0
08-24 415.13
08-25 419.5
08-26 525.71
08-27 464.5
08-28 426.13
08-29 410.86
08-30 388.29
08-31 388.14
09-01 358.14
09-02 291.14
09-03 291.29
09-04 276.0
09-05 275.0
09-06 311.14
09-07 296.0
09-08 259.29
09-09 275.86
09-10 273.25
09-11 283.57
09-12 270.5
09-13 273.33
09-14 255.63
09-15 285.5
09-16 242.14
09-17 261.0
09-18 259.0
09-19 264.86
09-20 238.5
09-21 221.5
09-22 226.86
09-23 252.5
09-24 270.25
09-25 252.38
09-26 244.71
09-27 245.86
09-28 267.67
09-29 243.29
09-30 248.86
10-01 266.0
10-02 262.43
10-03 276.43
10-04 279.13
10-05 309.0
10-06 296.14
10-07 286.13
10-08 306.33
10-09 271.88
10-10 302.71
10-11 298.5
10-12 251.5
10-13 305.33
10-14 312.0
10-15 274.2
10-16 370.17
10-17 286.29
10-18 364.86
10-19 336.71
10-20 294.2
10-21 318.38
10-22 283.33
10-23 334.71
10-24 287.43
10-25 316.5
10-26 366.14
10-27 314.0
10-28 409.29
10-29 339.0
10-30 362.14
10-31 419.29
11-01 351.43
11-02 430.86
11-03 404.86
11-04 417.71
11-05 387.67
11-06 414.43
11-07 427.0
11-08 424.71
11-09 429.86
11-10 415.14
11-11 455.2
11-12 331.8
11-13 409.14
11-14 413.63
11-15 403.63
11-16 401.38
11-17 354.14
11-18 411.38
11-19 365.14
11-20 362.67
11-21 393.29
11-22 366.83
11-23 361.33
11-24 311.4
11-25 423.33
11-26 364.0
11-27 384.14
11-28 393.14
11-29 385.43
11-30 360.0
12-01 295.6
12-02 379.43
12-03 370.29
12-04 369.14
12-05 373.71
12-06 373.57
12-07 355.0
12-08 304.2
12-09 293.4
12-10 292.0
12-11 340.67
12-12 365.14
12-13 335.4
12-14 347.57
12-15 329.83
12-16 324.83
12-17 292.2
12-18 348.57
12-19 361.43
12-20 319.67
12-21 340.57
12-22 345.43
12-23 327.17
12-24 321.0
12-25 340.43
12-26 329.17
12-27 322.5
12-28 320.17
12-29 297.17
12-30 317.4
12-31 407.83

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index