The relative size of a tree is determined by the total number of points earned on the basis of three measurements:
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CIRCUMFERENCE or GIRTH is measured at 4 1/2 feet above the ground at mid-slope. Circumference inches = circumference points.
The HEIGHT of the tree in feet = height points.
CROWN SPREAD in feet / 4 = crown points.
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Detailed instructions for big tree measurements
can be found at the Oregon
Department of Forestry.
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Michigan's National Champion Trees Michigan's State Champion Trees Related Resources
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