Coast Fork Willamette River below Cottage Grove Dam, Oregon water temperature

Coast Fork Willamette River below Cottage Grove Dam, Oregon · River

The current water temperature at Coast Fork Willamette River below Cottage Grove Dam is 22.6 °C (as of September 1, 2026, source: USGS).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

22.6 °C

Measured: September 1, 2026 · continuously updated

💧 Water 22.6° · ☀️ Air 26.2°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 468 data points since July 3, 2026.

Lowest recorded value: 15.1 °C on July 3, 2026 · highest value: 23.0 °C on August 24, 2026.

Nearby waters

Coast Fork Willamette at London, Oregon · 9.3 km away19.7 °C Row River near Cottage Grove, Oregon · 9.3 km away18.3 °C Row River above Pitcher Creek, near Dorena, Oregon · 14.2 km away19.3 °C Coast Fork Willamette River near Goshen, Oregon · 29.6 km away20.8 °C Middle Fork Willamette River near Dexter, Oregon · 30.3 km away19.4 °C

Frequently asked questions

Can you swim at Coast Fork Willamette River below Cottage Grove Dam right now?
The current water temperature is 22.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Coast Fork Willamette River below Cottage Grove Dam?
Currently 22.6 °C (updated continuously).

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