Replying to Building jumps in bounds

I know this is probably a dumb question (I did search and could not find anything on it).  If your resort is on government land and is under a lease permit, can they bust you for building jumps in the trees?  I know you cannot improve park features (because they are resort property, but can you "change" terrain off designated trails?  I would imagine it is okay because technically it is government property and it is perfectly legal to go and build jumps on any other government land.  So since my resort is on public land owned by the government, can they restrain me from changing terrain off of designated trails?