State parks managed by counties

This weekend there were two new caches submitted for review called A Grove View and A Large Dead One which are both located in Oak Grove State Park. I wrote to the cache owner and requested that permission be obtained from the Iowa DNR. However, the owner, campingfarmer, correctly pointed out that even though this is a state park, it is managed by the county. He also provided a link to other such parks. As the DNR states at this site: "These parks fall under any rules, fees and regulations established by the county. Please contact the county conservation board listed for more information about a specific park." My thanks to campingfarmer for pointing this out.