Columbia Slough At Portland, Or Realtime Data
COLUMBIA SLOUGH AT PORTLAND, OR
Realtime Data • Report • Conditions
535
Discharge (cfs)
3.3
Gauge Height (ft)
Streamflow discharge was last observed at 535 cfs, and a gauge height of 3.27 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 643 .
Weather today, Tomorrow,
The main flow providers to the Columbia Slough include Johnson Creek, Fairview Creek, and Whitaker Ponds. There are no major dams on this waterway. Seasonal trends show that the water levels are higher in the winter months due to increased rainfall, while the summer months experience lower water levels due to decreased precipitation. Interestingly, the Columbia Slough is a highly urbanized waterway, flowing through industrial and residential areas of Portland. Despite this, efforts have been made to improve water quality and restore natural habitats through community-based projects.
July 26, 2026
| Elevation | 11.0 ft |
| Last Updated | |
| Mean water velocity for discharge computation, feet per second | -0.38 ft/sec |
| Gage height, ft | 3.27 ft |
| Streamflow, ft³/s | 535.0 ft3/s |
| Percent of Normal | 70% |
| Year Over Year Average | 771 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 1,580 cfs |
| Geolocation | 45.64, -122.76 |
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