Located a mile west of the Milwaukee River in the City of Mequon, Spirit Lake is 155 acres. This preserve contains a one-half mile tributary that flows to the Milwaukee River, upland hardwood forest, lowland hardwood forest with ephemeral ponds cattail marsh, fresh (wet) meadow, and a small, restored grassland. The habitats boast an even more impressive animal population as sandhill cranes, turkeys, coyotes, deer, bald eagles and osprey can all be seen at the preserve. Additionally, for the amphibian lovers both green frogs and leopard frogs can be seen in the cattail marsh. Visit this preserve to hike, bird watch, fish, hunt or cross country ski.