Portage Lake County Park From Wikipedia, the free encyclopedia Park in Jackson County, Michigan Portage Lake County Park is a park in Waterloo Township, Michigan, United States.[1] A picnic area with grills, a playground, a swimming area, a boat launch, a historic pump house, and portable toilets are available at the 6-acre (2.4 ha) park. References ↑ Portage Lake County Park 42°20′14″N 84°13′38″W / 42.3373°N 84.2272°W / 42.3373; -84.2272 This garden-related article is a stub. You can help Wikipedia by expanding it.vte This Michigan state location article is a stub. You can help Wikipedia by expanding it.vte Related Articles