Although Iowa is one of the prairie states, original surveys show that about 6,690,000 acres, or approximately one-fifth of the state was wooded. The survey shows that in parts ninety-five percent of the land was originally covered with timber growth. The original cover of timber gradually decreased from the eastern and southeastern portions of the state to the northwest where relatively small areas of tree growth were found.
"The Iowa Forest- At the Crossroads,"
Ames Forester: Vol. 65
, Article 9.
Available at: https://lib.dr.iastate.edu/amesforester/vol65/iss1/9