Forest tree species tend to grow in specific ranges and in varying numbers. North American forest type and density maps have been developed by the United States Forest Service based on the frequency of both tree stem count and tree species occurrence.
1. Forest Range and Type Groups of the United States
USFS
This is the United States Forest Service's (USFS) forest type location map. The map gives you a visual presentation of the 26 major timber type groups along with their natural ranges in the United States. For serious viewing, review this map with the zoom tool using the following Adobe Acrobat file (PDF).
2. Forest Density Levels of the United States
USFS
This is the United States Forest Service's (USFS) forest distribution map. The map gives you a visual presentation of the level of tree density in increments of 10 percentage points. For serious viewing, review this map with the zoom tool using the following Adobe Acrobat file (PDF).
