Table 9. Calculated emergence day at Mehema (river mile 38.7) from the North Santiam River model were based on the day at which the Accumulated Thermal Units (ATUs) reached 1,750 degrees Fahrenheit-day, North Santiam River, Oregon.


[ATU calculated by the difference of the average daily temperature above 
32 degrees Fahrenheit from September 20 through December 31. Dates in January and February were estimated based on model results from each environmental scenario. Scenarios were based on the max temperature target]

First posted October 30, 2012

Revised June 11, 2013