<!-- canonical: https://the-waterline.com/streamflow/columbia-basin -->
<!-- Machine-readable Markdown for agents. Append .md to any page URL; index at https://the-waterline.com/llms.txt -->

# Columbia basin streamflow

Daily mean discharge across 2 gauges

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

> 2 basin-representative gauges tracked.

The Columbia River ran at 88,600 cfs at the International Boundary and 125,000 cfs at The Dalles as of August 9.

## The numbers

| Gauge | Discharge | As of |
| --- | --- | --- |
| Columbia River at The Dalles | 115,000 cfs | Aug 12, 2026 |
| Columbia River at International Boundary | 87,800 cfs | Aug 12, 2026 |

## About this data

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

---
Cite: Columbia basin: 115,000 cfs daily mean discharge as of Aug 12, 2026 (USGS). The Waterline. https://the-waterline.com/streamflow/columbia-basin
Canonical URL: https://the-waterline.com/streamflow/columbia-basin