 Dowagiac Woods Nature Sanctuary, commonly referred to as Dowagiac Woods, a woods located in Cass, is a non-profit organization dedicated to protecting Michigan's exceptional natural habitats and extraordinary and endangered plants and animals.The Dowagiac River flows from the stream which rises as the "Dowagiac Drain" in central Decatur Township in southern Van Buren County, Michigan.It is joined first by the "Red Run" and then by the "Lake of the Woods Drain" near the southern edge of Hamilton Township, it becomes the "Dowagiac River" before entering into Wayne Township in Cass County.