State of DelawareDelaware Seashore State Park Multiple Seasonal Positions State of DelawareDelaware Seashore State Park Multiple Seasonal PositionsDover, DEThe State Park Commission, now the Division of Parks and Recreation, began managing the land as Indian River State Park in 1965, but it didnt become Delaware Seashore State Park until 1967. A variety of seasonal park positions are available at Delaware Seashore State Park, which may include the following: Campground Registrar - 15.00hr - responsible for all aspects of camp registration, database entry.