Estimates of fuel consumption were made for six harvesting systems used in typical coastal British Columbia forest operations. Five of the systems - grapple yarding, highlead yarding, skyline yarding, helicopter yarding, and loader forwarding - were in clearcuts. Another system consisted of loader forwarding in a partial cut. The proportion of wood harvested by each of these harvesting systems was also determined, based on a survey of coastal British Columbia forest companies. This study was part of a larger research effort on life-cycle analysis addressing the impact of forest operations on the environment.