Drywilliam Lake Ecological Reserve was established to preserve for forestry research a representative stand of Douglas-fir in the Sub-boreal Spruce Zone.
Ecological reserves protect special natural ecosystems, and support research and education. They are not intended for outdoor recreation. However, this ecological reserve is open to the public for non-destructive activities like hiking, nature observation and photography. Consumptive activities like hunting, fishing, camping, or foraging are prohibited. Motorized vehicles are not allowed.