Water Temperature

Observed Data at Lower Granite Pool thru 20 Sep 2017

The Temperature Algorithm predicts the current year's water temperature based on historical data, year-to-date data, and a flow forecast. Output from the Temperature forecasts are used as input to the Total Dissolved Gas forecasts as well as the Smolt Passage and Adult Passage forecasts. Historical and current year temperature data is provided courtesy of the Army Corps of Engineers. Inseason flow forecasts are courtesy of Bonneville Power Administration. For more details on the predictions, see the Methods page.


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