Upper Rock GMU

Below are statistics, charts and general information on the Upper Rock GMU. All chart and map links open in a separate window.

The Upper Rock GMU is mostly agricultural and urban. Only 7% of the land is in forests.

Forest acreage

The area of timberland in the Upper Rock GMU has decreased by over 22,000 acres or 21% in the past decade. The most recent survey (2001-2005) indicates that productive forestland makes up about 84,300 acres or 7% of the total land area of the GMU.
View bar chart: Timberland acreage in the Upper Rock GMU

Forest types

Bottomland forest types (mainly sugarberry/hackberry/elm/green ash, black ash/American elm/red maple, and willow) account for 34% of timberland acreage. Sugar maple-dominated types make up 24% and oak-dominated forest types make up 21% of acreage.
View bar chart: The most important forest types in the Upper Rock GMU

Growing stock volume

Total growing stock volume in the Upper Rock GMU is 91 million cubic feet. Black cherry, elm species and northern red oak each make up about 10% of volume.

Ratio of growth to removals

Net annual growth (4.9 million cubic feet) in the Upper Rock GMU exceeded average annual removals (300,000 cubic feet) by 1400%. Growth of growing stock trees accounted for 5.4% of standing volume.

Habitat type

Almost 40% of the forested landscape in the Upper Rock GMU is considered wet mesic or lowland. Most of the rest (42%) is either dry mesic-mesic or mesic.
View pie chart: Major habitat types in the Upper Rock GMU

Timberland ownership

Only 14% of timberland in the Upper Rock GMU is publicly owned. The majority (86%) is owned by private entities.
View pie chart: Ownership of Timberland in the Upper Rock GMU