I don't know how they make the choice on what parks to close?
But I would doubt that they are closing these parks because the parks can't sustain themselves.
If a private party can buy a small campground, get a loan for the land, build campsites, add restrooms, make the loan payments, pay taxes on their profits, etc. etc. (Example: something like a KOA or a private campsite by the beach) and these small businesses can make it work, there is no reason a State Park shouldn't be able to make it work too.
The State Parks still have costs to run the campground, but I don't think any profits would be taxable and the land is owned by the State so there is no debt to worry about (no land loan payments).
I'm not sure how all of this works, but I can only guess that the State(s) are mis-managing the money and losing focus on some important priorities.
Where can they cut spending that will have the least "squak factor" from the people.
If you stopped health care, people will freak out.
If you stopped paying out unemplyoment, people would freak out.
If you stopped giving out money to all sorts of big programs, the voters are going to "squak".
But how many people are going to stand up and fight if a small campsite closes down ?
Probably not many.
People will be mad and bummed out, but I doubt they are going to march the Capital steps because they can't camp anymore.
It is sad.
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So all those parks were revenue negative each year?
.
.