http://delawarestateparks.rese.....erica.com/

New Reservation Window for Campground Reservations
To better help our customers plan their vacations, the seven-month reservation window has been changed to a one-year window. Like your spot this year? The new one-year window allows you to reserve it for next year before you leave the campground! No need to remember which site number you had or save the campground map with all your notes and circles around campsite numbers; now you can call or go online during your stay to reserve for the same time next year.