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To estimate tree volume in board feet, determine the tree diameter at 4 1/2 feet above ground (referred to as Diameter at Breast Height or DBH) and the usable length of the first log (the distance between the stump and the first large branches).

To measure the diameter, either use a tree scale stick (instructions for use are here) or a diameter tape measure which can be found in some hardware stores.

( NOTE: In Illinois, the State Administrative Code Section 1585 specifies that the Doyle Log Rule will apply, as opposed to the International or Scribner Log Rules that are used in some other states.)

The table below shows the size of the first log in board feet, 1 board foot =  12” x 12” x 1”.