cutblock
A designated area from which timber can be harvested.
cutblock: a forest patch marked for timber removal
A cutblock is a specific geographic area, typically ranging from 10 to 500 hectares, that has been surveyed, marked, and legally designated for timber harvesting. It forms the basic operational unit of commercial forestry, defining the boundary where felling, skidding, and transport operations will occur during a single harvest cycle.
The cutblock's exact size and shape depend on several factors: terrain steepness, drainage patterns, road access, and regulatory requirements that vary by jurisdiction. In mountainous regions, cutblocks may be smaller and more irregular to follow contours and minimize erosion risk. On flatter land with good road networks, they can be larger rectangles or squares for efficiency. Each cutblock receives an identifying number tied to a forest management plan, linking it to harvest permits, environmental assessments, and compliance records.
Marking and boundaries
Before harvesting begins, cruisers and foresters walk the cutblock to estimate timber volume, identify merchantable species, and flag hazard trees or retention areas that must be left standing. Boundary markers, typically painted blazes on trees or plastic flagging, show operators where cutting must stop. Cutblock maps provided to contractors show road access points, stream buffers, and any no-harvest zones. Poor boundary marking directly leads to trespass harvesting or accidental damage to adjacent forest.
The cutblock system allows forestry companies and government agencies to track which areas have been harvested, how much wood was removed, and when regeneration is occurring. It also enables regulatory compliance: environmental laws often require that certain cutblocks include riparian buffers, wildlife corridors, or reserved trees for habitat. Enforcement relies on these defined boundaries being respected on the ground.
Cutblocks are named and organized within larger management units called blocks or compartments. A single timber sale may comprise several adjacent or scattered cutblocks, each harvested in sequence over months or years depending on capacity and market conditions.