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Items starting with G

Ground Water

The supply of fresh water under the earth's surface in an aquifer or in the soil.

Ground-based logging

The dragging or carrying of trees or logs for the stump to the landing using various types of self-propelled machines (e.g., tractors, skidders, forwarders).

Group selection

An uneven-aged cutting method in which small groups of trees, usually no more than two acres in size, are removed to meet a predetermined goal of size distribution and tree species in the remaining stand.


Actions or management practices that may be used to achieve desired outcomes, sometimes expressed as best management practices. Guidelines may be identified during the land use planning process, but they are not considered a land use plan decision unless the plan specifies that they are mandatory. Guidelines for grazing administration must conform to 43 CFR 4180.2.


General term covering guzzler, wildlife drinker, or tenaja. A natural or artificially constructed structure or device to capture and hold rain water, and make it accessible to small and/or large animals. Most guzzlers involve above or below ground piping, storage tanks, and valves. Tenajas are natural depressions in rock, which trap and hold water. To some tenajas, steps are sometimes added to improve access and reduce mortality from drowning.