Forked Lake Posted Signs

Maybe some can clear this up for me because I am a bit confused. I was recently on Forked Lake while paddling the NFCT and was a bit confused by the location of some posted signs on the lake. Looking at the DEC map it shows almost all of the land on the southern end of the lake between the canoe carry and the campground as DEC lands, but when I was there it was entirely covered with posted signs and thinking back I do not think any of them had a name on them. I am aware that sections of the western and northern end of the lake are posted and it accurately depicts this on the map but was a bit confused when seeing them all along the southern shore as well.