Its an easement program that is funded by the Farm Bill through the NRCS. Some easements are term for 30years and some are perpetual. That sign alone does not mean its open to public hunting. Basically that program is protecting the wetland basins from drainage. I am sure there are other provisions that restrict other farming practices but I am unaware of them. They are paid per acre to restore any drained wetlands as well. The USFWS has an easement programs as well but they never sign their easements.