Willamette River at Portland streamflow

Name: Willamette River at Portland streamflow
Creator: The Watershed
Keywords: Willamette River at Portland, streamflow, discharge, Willamette-Columbia, Oregon

Daily mean discharge, Willamette-Columbia basin, Oregon

Last updated Jun 18, 2026

Willamette River at Portland streamflow — ft^3/s

Now 9,700, 24% below the 5-yr median.

The numbers
Period	Current	Prior	Change
Week over week	9,700	13,600	-28.7%
Month over month	9,700	13,300	-27.1%
Year over year	9,700	8,000	+21.3%
vs 5-yr median	9,700	12,700	-23.6%

From the brief

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