This small park provides representation of the Kiskatinaw Plateau ecosection. The boreal white and black spruce biogeoclimatic zone covers One Island Park. Forests are comprised mainly of lodgepole pine and black and white spruce.
A variety of waterfowl congregate at One Island Lake. Moose, white-tail and mule deer, beaver and black bear are also common to the area. One Island Lake is a popular destination for area anglers. The lake is stocked annually with brook and rainbow trout. The lake also supports other fish species such as brook stickleback, finescale dace and fathead minnow.