COLUMBIA SLOUGH AT PORTLAND, OR
USGS 14211820 · Oregon · reports discharge (live), gauge height
Reading COLUMBIA SLOUGH AT PORTLAND, OR…
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USGS 14211820 · Oregon · reports discharge (live), gauge height
What the agencies suggest
Use a thermometer to check water temperatures frequentlyOregon Department of Fish and Wildlife
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 11:05 AM PST · provisional USGS data
Below normal for Nov 5 Falling · 24 h
Discharge, last 7 days: 118 readings from Oct 29, 9:35 PM PDT to Nov 5, 11:05 AM PST; ranging 4.39 to 1,030 ft³/s; latest 34 ft³/s; 12 gaps in the record; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|
| Nov 5, 11:05 AM PST | 34 | 2.37 | 81–151 |
| Nov 5, 10:10 AM PST | 437 | 2.26 | 81–151 |
| Nov 5, 9:15 AM PST | 545 | 2.44 | 81–151 |
| Nov 5, 8:20 AM PST | 616 | 2.73 | 81–151 |
| Nov 5, 7:25 AM PST | 635 | 3.03 | 81–151 |
| Nov 5, 6:30 AM PST | 658 | 3.32 | 81–151 |
| Nov 5, 5:35 AM PST | 717 | 3.67 | 81–151 |
| Nov 5, 4:40 AM PST | 565 | 4.06 | 81–151 |
| Nov 5, 3:45 AM PST | 169 | 4.46 | 81–151 |
| Nov 4, 11:10 PM PST | 34.8 | 2.53 | 33–137 |
| Nov 4, 10:15 PM PST | 422 | 2.37 | 33–137 |
| Nov 4, 9:20 PM PST | 582 | 2.55 | 33–137 |
| Nov 4, 8:25 PM PST | 651 | 2.81 | 33–137 |
| Nov 4, 7:30 PM PST | 651 | 3.12 | 33–137 |
| Nov 4, 6:35 PM PST | 721 | 3.42 | 33–137 |
| Nov 4, 5:40 PM PST | 728 | 3.77 | 33–137 |
| Nov 4, 4:45 PM PST | 560 | 4.16 | 33–137 |
| Nov 4, 10:20 AM PST | 53.1 | 1.8 | 33–137 |
| Nov 4, 9:25 AM PST | 378 | 1.66 | 33–137 |
| Nov 4, 8:30 AM PST | 507 | 1.83 | 33–137 |
| Nov 4, 7:35 AM PST | 555 | 2.11 | 33–137 |
| Nov 4, 6:40 AM PST | 576 | 2.45 | 33–137 |
| Nov 4, 5:45 AM PST | 614 | 2.76 | 33–137 |
| Nov 4, 4:50 AM PST | 658 | 3.08 | 33–137 |
| Nov 4, 3:55 AM PST | 648 | 3.44 | 33–137 |
| Nov 4, 3:00 AM PST | 426 | 3.84 | 33–137 |
| Nov 3, 9:55 PM PST | 16.2 | 2.65 | 35–134 |
| Nov 3, 9:00 PM PST | 383 | 2.23 | 35–134 |
| Nov 3, 8:05 PM PST | 526 | 2.24 | 35–134 |
| Nov 3, 7:10 PM PST | 546 | 2.47 | 35–134 |
| Nov 3, 6:15 PM PST | 621 | 2.74 | 35–134 |
| Nov 3, 5:20 PM PST | 665 | 3.04 | 35–134 |
| Nov 3, 4:25 PM PST | 627 | 3.38 | 35–134 |
| Nov 3, 3:30 PM PST | 399 | 3.78 | 35–134 |
| Nov 3, 9:40 AM PST | 20.5 | 1.8 | 35–134 |
| Nov 3, 8:45 AM PST | 369 | 1.69 | 35–134 |
| Nov 3, 7:50 AM PST | 508 | 1.87 | 35–134 |
| Nov 3, 6:55 AM PST | 541 | 2.15 | 35–134 |
| Nov 3, 6:00 AM PST | 584 | 2.47 | 35–134 |
| Nov 3, 5:05 AM PST | 627 | 2.81 | 35–134 |
| Nov 3, 4:10 AM PST | 647 | 3.13 | 35–134 |
| Nov 3, 3:15 AM PST | 668 | 3.47 | 35–134 |
| Nov 3, 2:20 AM PST | 587 | 3.82 | 35–134 |
| Nov 3, 1:25 AM PST | 296 | 4.19 | 35–134 |
| Nov 2, 8:15 PM PST | 4.39 | 2.61 | 71–143 |
| Nov 2, 7:20 PM PST | 305 | 2.24 | 71–143 |
| Nov 2, 6:25 PM PST | 410 | 2.25 | 71–143 |
| Nov 2, 5:30 PM PST | 464 | 2.43 | 71–143 |
| Nov 2, 4:35 PM PST | 471 | 2.66 | 71–143 |
| Nov 2, 3:40 PM PST | 504 | 2.91 | 71–143 |
| Nov 2, 2:45 PM PST | 301 | 3.2 | 71–143 |
| Nov 2, 1:50 PM PST | 153 | 3.56 | 71–143 |
| Nov 2, 9:05 AM PST | 9.4 | – | 71–143 |
| Nov 2, 8:10 AM PST | 335 | – | 71–143 |
| Nov 2, 7:15 AM PST | 476 | – | 71–143 |
| Nov 2, 6:20 AM PST | 572 | – | 71–143 |
| Nov 2, 5:25 AM PST | 584 | – | 71–143 |
| Nov 2, 4:30 AM PST | 620 | – | 71–143 |
| Nov 2, 3:35 AM PST | 660 | – | 71–143 |
| Nov 2, 2:40 AM PST | 665 | – | 71–143 |
| Nov 2, 1:45 AM PST | 711 | – | 71–143 |
| Nov 2, 12:50 AM PST | 630 | – | 71–143 |
| Nov 1, 11:55 PM PST | 433 | – | 72–170 |
| Nov 1, 6:45 PM PST | 16.8 | 2.74 | 72–170 |
| Nov 1, 5:50 PM PST | 355 | 2.45 | 72–170 |
| Nov 1, 4:55 PM PST | 432 | 2.48 | 72–170 |
| Nov 1, 4:00 PM PST | 482 | 2.68 | 72–170 |
| Nov 1, 3:05 PM PST | 524 | 2.94 | 72–170 |
| Nov 1, 2:10 PM PST | 537 | 3.2 | 72–170 |
| Nov 1, 1:15 PM PST | 366 | 3.55 | 72–170 |
| Nov 1, 7:55 AM PST | 26.5 | 2.06 | 72–170 |
| Nov 1, 7:00 AM PST | 381 | 1.79 | 72–170 |
| Nov 1, 6:05 AM PST | 540 | 1.87 | 72–170 |
| Nov 1, 5:10 AM PST | 584 | 2.12 | 72–170 |
| Nov 1, 4:15 AM PST | 631 | 2.45 | 72–170 |
| Nov 1, 3:20 AM PST | 699 | 2.81 | 72–170 |
| Nov 1, 2:25 AM PST | 759 | 3.17 | 72–170 |
| Nov 1, 1:30 AM PST | 770 | 3.49 | 72–170 |
| Nov 1, 1:35 AM PDT | 838 | 3.86 | 72–170 |
| Nov 1, 12:40 AM PDT | 717 | 4.27 | 72–170 |
| Oct 31, 11:45 PM PDT | 334 | 4.63 | 71–152 |
| Oct 31, 6:00 PM PDT | 40.1 | 2.64 | 71–152 |
| Oct 31, 5:05 PM PDT | 372 | 2.3 | 71–152 |
| Oct 31, 4:10 PM PDT | 474 | 2.41 | 71–152 |
| Oct 31, 3:15 PM PDT | 529 | 2.65 | 71–152 |
| Oct 31, 2:20 PM PDT | 591 | 2.9 | 71–152 |
| Oct 31, 1:25 PM PDT | 515 | 3.22 | 71–152 |
| Oct 31, 12:30 PM PDT | 218 | 3.59 | 71–152 |
| Oct 31, 8:10 AM PDT | 44.4 | 2.24 | 71–152 |
| Oct 31, 7:15 AM PDT | 422 | 1.92 | 71–152 |
| Oct 31, 6:20 AM PDT | 617 | 2.01 | 71–152 |
| Oct 31, 5:25 AM PDT | 684 | 2.29 | 71–152 |
| Oct 31, 4:30 AM PDT | 750 | 2.63 | 71–152 |
| Oct 31, 3:35 AM PDT | 790 | 3.01 | 71–152 |
| Oct 31, 2:40 AM PDT | 852 | 3.39 | 71–152 |
| Oct 31, 1:45 AM PDT | 869 | 3.76 | 71–152 |
| Oct 31, 12:50 AM PDT | 956 | 4.11 | 71–152 |
| Oct 30, 11:55 PM PDT | 939 | 4.53 | 58–156 |
| Oct 30, 11:00 PM PDT | 653 | 4.9 | 58–156 |
| Oct 30, 5:10 PM PDT | 36.9 | 3.19 | 58–156 |
| Oct 30, 4:15 PM PDT | 499 | 2.72 | 58–156 |
| Oct 30, 3:20 PM PDT | 569 | 2.78 | 58–156 |
| Oct 30, 2:25 PM PDT | 642 | 3.03 | 58–156 |
| Oct 30, 1:30 PM PDT | 636 | 3.26 | 58–156 |
| Oct 30, 12:35 PM PDT | 647 | 3.61 | 58–156 |
| Oct 30, 11:40 AM PDT | 320 | 3.97 | 58–156 |
| Oct 30, 7:05 AM PDT | 46.3 | 2.74 | 58–156 |
| Oct 30, 6:10 AM PDT | 509 | 2.25 | 58–156 |
| Oct 30, 5:15 AM PDT | 661 | 2.26 | 58–156 |
| Oct 30, 4:20 AM PDT | 756 | 2.52 | 58–156 |
| Oct 30, 3:25 AM PDT | 841 | 2.86 | 58–156 |
| Oct 30, 2:30 AM PDT | 872 | 3.25 | 58–156 |
| Oct 30, 1:35 AM PDT | 929 | 3.64 | 58–156 |
| Oct 30, 12:40 AM PDT | 934 | 3.98 | 58–156 |
| Oct 29, 11:45 PM PDT | 1,030 | 4.33 | 43–155 |
| Oct 29, 10:50 PM PDT | 924 | 4.74 | 43–155 |
| Oct 29, 9:55 PM PDT | 337 | 5.14 | 43–155 |
| Oct 29, 9:35 PM PDT | 24.3 | 5.58 | 43–155 |
Map of USGS gauge 14211820 and the river around it
Where COLUMBIA SLOUGH AT PORTLAND, OR sits.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer: the trout lines ODFW uses are 68°F and 70°F.
Species list not on file for this gauge. Check the Oregon Department of Fish and Wildlife: Oregon weekly trout stocking schedule · Oregon fishing regulations.
Normal for Nov 5: 81–151 ft³/s (middle half of 32 years of record). Now: 34 ft³/s, below normal.
Below normal for this date. 34 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 32 years of record (1990–2026): 10th -3.4, 25th 81, median 102, 75th 151, 90th 175 ft³/s.
Daily means on record for Nov 5: lowest -37.1 ft³/s, highest 209 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Falling over 24 hours: discharge down 36%, from 53.1 to 34 ft³/s. Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 4:38 PM PST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.