Forest Resource in Geographical Management Units
- Overview & State Map
- Explanation of GMUs
- BadAxe - LaCrosse
- Black - Buffalo - Trempeleau
- Central Wisconsin
- Grant - Platte - Sugar - Pecatonica
- Headwaters
- Illinois Fox
- Lakeshore
- Lake Superior
- Lower Chippewa
- Lower Fox
- Lower Rock
- Lower Wisconsin
- Milwaukee River
- Mississippi River
- Root Pike
- Sheboygan
- St. Croix
- Upper Chippewa
- Upper Fox
- Upper Green Bay
- Upper Rock
- Wolf
Illinois Fox GMU
Below are statistics, charts and general information on the Illinois Fox GMU. All chart and map links open in a separate window.
The Illinois Fox GMU is located in 4 counties: Waukesha, Walworth, Kenosha and Racine counties. This GMU is highly urban and agricultural with only 15% of land in forests. Waukesha and Walworth counties account for about ¾ of timberland area.
Forest acreage
The area of timberland in the Illinois Fox GMU increased by about 20,000 acres or 25% over the past decade. The most recent survey (2001-2005) indicates that productive forest land makes up about 100,490 acres or 15% of the total land area of the GMU.
View bar chart: Timberland acreage in the Illinois Fox GMU
Forest types
Oak-dominated types (white oak/red oak/ hickory, white oak and northern red oak) make up about 36% of timberland acreage. Sugar maple-dominated types account for another 14%. View bar chart: The most important forest types in the Illinois Fox GMU
Growing stock volume
Total growing stock volume in the Illinois Fox GMU is 125.5 million cubic feet. White oak accounts for the highest percent of volume or 14%. Oak species (bur, northern red, black and northern pin oak) together make up an additional 21% of growing stock volume. White and green ash acount for 14%.
Ratio of growth to removals
Net annual growth of trees (4.7 million cubic feet) in the Illinois Fox GMU exceeds annual removals (0.7 million cubic feet) by 559%. Quaking aspen and black oak each account for about 36% of removals.
Habitat type
Half of all timberland in the Illinois Fox GMU is classified as dry mesic to mesic. Another 16% is either mesic-wet mesic or lowland. Undefined habitat types are common in this GMU due forestland fragmentation and human impacts. View pie chart: Major habitat types in the Illinois Fox GMU
Timberland ownership
The majority or 82% of timberland in the Illinois Fox GMU remains in private hands with 18% owned by local and state government.
View pie chart: Ownership of Timberland in the Illinois Fox GMU