FERIC conducted a synoptic survey of 102 landslides on the Queen Charlotte Islands, 97 of which originated within logged areas, to provide forest engineering input into the interpretation of probable causes and possible preventative measures. The principle factors in road-related landslides appeared to be overloading of steep slopes with fill or sidecast material and inadequate control of road drainage. Specific causes for landslides that initiated within clearcuts but away from roads could rarely be identified. However, the yarding process probably accelerated landslide activity at critical points where poor deflection generated severe yarding disturbance on sensitive slopes.