Overview Realtime Historical Map View

Columbia Slough At Portland, Or Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014
01-01 564.3
01-02 495.75
01-03 683.0
01-04 708.8
01-05 706.0
01-06 654.0
01-07 881.0
01-08 856.6
01-09 812.25
01-10 933.0
01-11 863.17
01-12 897.5
01-13 708.5
01-14 809.25
01-15 797.0
01-16 433.4
01-17 475.87
01-18 539.57
01-19 648.63
01-20 651.6
01-21 595.14
01-22 736.0
01-23 653.5
01-24 667.24
01-25 584.6
01-26 676.14
01-27 649.23
01-28 496.17
01-29 443.1
01-30 478.25
01-31 562.54
02-01 781.44
02-02 763.67
02-03 718.08
02-04 693.67
02-05 566.57
02-06 640.11
02-07 659.0
02-08 579.71
02-09 721.14
02-10 635.0
02-11 583.86
02-12 689.47
02-13 666.22
02-14 680.86
02-15 610.0
02-16 600.17
02-17 579.38
02-18 710.83
02-19 553.5
02-20 767.13
02-21 531.63
02-22 824.67
02-23 838.88
02-24 811.75
02-25 614.29
02-26 569.13
02-27 576.0
02-28 642.38
02-29 713.0
03-01 687.43
03-02 617.57
03-03 612.0
03-04 710.57
03-05 780.83
03-06 581.5
03-07 624.11
03-08 570.26
03-09 615.33
03-10 661.0
03-11 724.0
03-12 782.14
03-13 667.63
03-14 624.44
03-15 615.92
03-16 534.51
03-17 447.93
03-18 645.43
03-19 655.0
03-20 614.78
03-21 672.11
03-22 723.13
03-23 714.25
03-24 542.67
03-25 609.8
03-26 634.47
03-27 512.47
03-28 542.11
03-29 557.0
03-30 527.78
03-31 618.43
04-01 556.53
04-02 673.89
04-03 706.0
04-04 606.83
04-05 553.13
04-06 613.43
04-07 646.0
04-08 480.47
04-09 577.13
04-10 600.86
04-11 640.63
04-12 601.0
04-13 574.75
04-14 639.5
04-15 464.86
04-16 404.71
04-17 537.83
04-18 491.0
04-19 378.99
04-20 587.0
04-21 465.92
04-22 624.13
04-23 436.38
04-24 503.67
04-25 370.95
04-26 507.01
04-27 425.78
04-28 530.25
04-29 426.35
04-30 374.29
05-01 538.86
05-02 539.29
05-03 612.83
05-04 397.23
05-05 385.7
05-06 570.88
05-07 443.75
05-08 428.63
05-09 278.8
05-10 533.37
05-11 447.88
05-12 386.14
05-13 506.86
05-14 570.6
05-15 614.5
05-16 384.36
05-17 551.14
05-18 496.73
05-19 594.5
05-20 657.6
05-21 366.56
05-22 418.94
05-23 544.0
05-24 606.33
05-25 525.91
05-26 498.44
05-27 484.57
05-28 468.66
05-29 436.11
05-30 463.13
05-31 541.14
06-01 600.71
06-02 591.5
06-03 393.16
06-04 533.0
06-05 579.56
06-06 647.75
06-07 433.4
06-08 628.67
06-09 556.86
06-10 557.17
06-11 724.6
06-12 596.0
06-13 608.4
06-14 679.14
06-15 603.14
06-16 583.34
06-17 661.07
06-18 708.88
06-19 540.08
06-20 470.61
06-21 664.33
06-22 652.0
06-23 527.59
06-24 473.17
06-25 574.0
06-26 527.71
06-27 494.68
06-28 718.63
06-29 661.0
06-30 539.83
07-01 618.5
07-02 797.5
07-03 702.75
07-04 741.71
07-05 724.56
07-06 838.25
07-07 776.57
07-08 666.33
07-09 694.83
07-10 622.0
07-11 539.78
07-12 481.2
07-13 592.17
07-14 729.83
07-15 676.38
07-16 746.22
07-17 794.44
07-18 742.0
07-19 652.96
07-20 792.75
07-21 849.86
07-22 867.71
07-23 649.5
07-24 841.83
07-25 808.5
07-26 530.83
07-27 588.2
07-28 886.67
07-29 701.43
07-30 619.17
07-31 732.5
08-01 696.0
08-02 826.29
08-03 760.56
08-04 773.56
08-05 843.13
08-06 725.29
08-07 619.24
08-08 585.6
08-09 546.6
08-10 428.8
08-11 633.0
08-12 766.33
08-13 861.0
08-14 804.0
08-15 764.86
08-16 629.95
08-17 749.5
08-18 502.29
08-19 561.29
08-20 578.49
08-21 687.5
08-22 696.4
08-23 745.67
08-24 749.2
08-25 464.75
08-26 539.14
08-27 614.83
08-28 653.17
08-29 692.14
08-30 576.88
08-31 560.19
09-01 721.57
09-02 739.86
09-03 689.63
09-04 567.37
09-05 685.0
09-06 687.2
09-07 542.83
09-08 399.01
09-09 502.62
09-10 448.85
09-11 589.42
09-12 566.17
09-13 674.3
09-14 642.03
09-15 575.04
09-16 546.85
09-17 649.11
09-18 594.02
09-19 823.17
09-20 676.4
09-21 815.0
09-22 755.2
09-23 408.75
09-24 375.78
09-25 587.5
09-26 604.4
09-27 637.0
09-28 620.0
09-29 563.38
09-30 611.0
10-01 725.6
10-02 733.67
10-03 791.67
10-04 740.5
10-05 599.89
10-06 681.0
10-07 581.67
10-08 570.83
10-09 572.98
10-10 540.36
10-11 581.17
10-12 679.0
10-13 682.8
10-14 635.86
10-15 640.57
10-16 444.33
10-17 730.43
10-18 790.33
10-19 696.67
10-20 842.2
10-21 761.14
10-22 641.13
10-23 519.29
10-24 597.57
10-25 777.83
10-26 758.4
10-27 741.0
10-28 731.11
10-29 752.11
10-30 633.41
10-31 802.0
11-01 803.33
11-02 599.0
11-03 612.14
11-04 632.43
11-05 701.56
11-06 706.0
11-07 751.63
11-08 749.71
11-09 820.17
11-10 782.43
11-11 685.17
11-12 685.5
11-13 735.71
11-14 725.57
11-15 735.5
11-16 764.29
11-17 675.14
11-18 662.17
11-19 730.86
11-20 583.5
11-21 511.09
11-22 598.34
11-23 943.75
11-24 856.0
11-25 790.83
11-26 653.14
11-27 762.75
11-28 738.14
11-29 868.67
11-30 761.0
12-01 725.33
12-02 563.43
12-03 531.11
12-04 537.26
12-05 640.57
12-06 601.0
12-07 576.47
12-08 533.02
12-09 623.14
12-10 668.13
12-11 665.86
12-12 733.88
12-13 799.14
12-14 750.86
12-15 799.71
12-16 740.71
12-17 718.6
12-18 950.0
12-19 675.5
12-20 706.2
12-21 419.22
12-22 584.33
12-23 717.8
12-24 693.43
12-25 852.86
12-26 740.0
12-27 847.0
12-28 723.5
12-29 631.5
12-30 588.67
12-31 596.67

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index