Swan Lake drains into Goose River. This strange naming conundrum might signify to some a sort of turf (or water) war between the two aquatic bird species. However, Swan Lake was formerly known as Goose Lake and only adopted its current moniker after the town of Swanville was founded on its shores.
Swan Lake State Park sits at the north end of the lake and is popular for kayaking, swimming, picnicking, and fishing.