So I have reduced my search down to three places that I feel may be possible.
Havenwoods State Forest – This is the only forest near Milwaukee.
Servite Park Preserve – This is the only Preserve I have located near North Milwaukee.
My last place is Park – This location is on the Milwaukee river Boggart mentioned the river and 2 entrances I believe. In addition, it was said that the snail farm was on an island which if you look on a full map mine is a bit too small you can see few islands. Now I don’t know if any of them are even large enough but it’s an idea. I am leaning toward this location. After watching Boggart’s video the tree/foliage and trails look very similar.