| TIGER Specifications for Illinois, Iowa, and Missouri |
Unless noted, the values below apply to all four states: Illinois, Iowa, and Missouri
Number of species = 45 for Illinois, Iowa, and Missouri (plus 5 other user defined
species for each state)
Minimum DBH for a tree to have 1 pulp bolt (1 pulp bolt = 8') = 3.5" for softwoods and = 5.5" for hardwoods
Minimum DBH for a tree to have 1/2 sawlog (1 log = 16') = 11.5" for softwoods and hardwoods (8.0 for softwoods
in Missouri)
Minimum DBH for a tree to have 1/2 veneer log (1 log = 16') = 13.5" for softwoods and hardwoods
Maximum sawlog height = 4 logs
Maximum veneer height = 2-1/2 logs
Minimum total height = 10'
Maximum total height =140'
Minimum site index = 20'
Growth model - Central States growth model by US Forest Service
Pulp volume table
Table 6 in Gevorkiantz and Olsen (1955) is the default volume table for each state
Default board foot volume table for sawtimber and veneer:
Illinois -- Doyle Log Rule, Form Class 78 by Mesavage and Girard (1946)
Iowa -- Table 1 (Scribner) by Gevorkiantz and Olson (1955)
Missouri -- International, Unknown origin, 2 inch DBH classes
To return to the "Details by state" page, click here
Number of species = 45 for Illinois, Iowa, and Missouri (plus 5 other user defined
species for each state)
Minimum DBH for a tree to have 1 pulp bolt (1 pulp bolt = 8') = 3.5" for softwoods and = 5.5" for hardwoods
Minimum DBH for a tree to have 1/2 sawlog (1 log = 16') = 11.5" for softwoods and hardwoods (8.0 for softwoods
in Missouri)
Minimum DBH for a tree to have 1/2 veneer log (1 log = 16') = 13.5" for softwoods and hardwoods
Maximum sawlog height = 4 logs
Maximum veneer height = 2-1/2 logs
Minimum total height = 10'
Maximum total height =140'
Minimum site index = 20'
Growth model - Central States growth model by US Forest Service
Pulp volume table
Table 6 in Gevorkiantz and Olsen (1955) is the default volume table for each state
Default board foot volume table for sawtimber and veneer:
Illinois -- Doyle Log Rule, Form Class 78 by Mesavage and Girard (1946)
Iowa -- Table 1 (Scribner) by Gevorkiantz and Olson (1955)
Missouri -- International, Unknown origin, 2 inch DBH classes
To return to the "Details by state" page, click here
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