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.
County Formation. When Illinois became a state in 1818, the area that is now Marshall county was part of Bond and Clark counties. As more counties were formed, the area became part of Pike, Sangamon, Putnam, and LaSalle counties. Marshall county was established in 1839 from Putnam county.