Small unsteady spoil banks/ levees can be built up to form a 'bowl' shape. Then with the help of dredges, soil can be pumped in and marsh grasses planted. Once the marsh grasses build up, levees will begin to collapse creating a new vegetated marsh area.
Worden is a village in Madison County, Illinois, United States.
William C. Greenup was one of the supervisors hired to oversee construction of the National Road in Illinois, surveying the original alignment from Marshall to Vandalia during the 1830s. The town of Greenup served as the Cumberland County seat from 1843 to 1857. Greenup is located at 39Â°14â²50â³N 88Â°9â²44â³W / 39.24722Â°N 88.16222Â°W / 39.24722; -88.16222 (39.247273, -88.162131).