Columbia River at The Dalles streamflow

Daily mean discharge, Columbia basin, Oregon

Data through Aug 12, 2026 · source last checked Aug 13, 2026 · page revised Aug 13, 2026

Cite

Columbia River at The Dalles: 115,000 cfs daily mean discharge as of Aug 12, 2026 (USGS). The Waterline. https://the-waterline.com/streamflow/columbia-river-at-the-dalles

cfs

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  <img src="https://the-waterline.com/charts/streamflow/columbia-river-at-the-dalles/chart.png" alt="Columbia River at The Dalles streamflow — Aug 12, 2026" width="720" style="max-width:100%;height:auto;border:0"/>
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<p style="font-size:12px;margin:4px 0 0">Source: <a href="https://the-waterline.com/streamflow/columbia-river-at-the-dalles?utm_source=embed&utm_medium=credit">The Waterline</a> · updates automatically</p>
<p style="font-size:11px;color:#6b6b6b;margin:2px 0 0">About this data: US Geological Survey (USGS) · Daily mean streamflow (discharge) · Columbia River at The Dalles · cfs · Daily mean · through Aug 12, 2026</p>

Free to republish with attribution. The chart updates automatically as new data lands.

About this data

Source: US Geological Survey (USGS)
Series: Daily mean streamflow (discharge)
Geography: Columbia River at The Dalles
Unit: cfs
Calculation: Daily mean
Last observation: Aug 12, 2026
Update frequency: Daily

Now 115,000 cfs, 11% below the 5-yr median.

The Columbia River at The Dalles ran 125,000 cfs on August 9, at its 5-year median. Flow fell 10.7% over the past month but rose 5% in the past week.

The numbers
Period	Current	Prior	Change
Week over week	115,000 cfs	114,000 cfs	+0.9%
Month over month	115,000 cfs	126,000 cfs	-8.7%
Year over year	115,000 cfs	129,000 cfs	-10.9%
vs 5-yr median	115,000 cfs	129,000 cfs	-10.9%

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