A kayak or canoe is required to access the cache. Please don't attempt the cache from land as some is private property. Each cache is named after a gemstone.
Launch at N44 36.378 W86 10.087
Take out N44 37.106 W86 10.087
This is about a 3 hour kayak trip when not stopping for caches along the way. There is an earlier put in/take out spot on River Road if you want a shorter trip.