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River temperature is computed from mixing of headwater temperatures according to the equation
(44) where
- Fi(t) = flow from headwater i through the river segment in question on day t
i(t) = temperature from headwater i on day t - (t) = temperature for selected river segment on day t
Headwater temperatures are identified for the Snake River using measured temperatures from Lower Granite Dam as available in the Army Corps of Engineers CROHMS data base. Head water temperatures for the Mid-Columbia are identified from CROHMS and supplemented using data collected by the US Geological Survey (USGS).
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Columbia River Salmon Passage Model CRiSP.1.5 Theory, Calibration & Validation Manual
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