Welcome to OSM, and thanks for your contributions. leisure=park has a specific meaning in OSM which doesn't necessarily match with how we use it in the US. I encourage you to read this section on the wiki to get an idea why leisure=park is not appropriate for state parks like this.

https://wiki.openstreetmap.org/wiki/Tag:leisure=park#Mapping_history_in_the_USA

Let me know if you have any questions!