Campground has been gated and locked for several years, and as the previous reviewer noted, not a great place to stay. There are NO AMENITIES, NO POTABLE WATER and not accessible by vehicle... you either hike or boat in.  The campground is still open for dispersed camping, which does require its own permit, purchased either on-line or at one of the visitor centers. 

https://landbetweenthelakes.us/seendo/camping/rules/