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.
Harrisburg, city, seat (1859) of Saline county, southern Illinois, U.S. It lies about 40 miles (65 km) east of Carbondale. It was laid out in 1853 and named in honour of James Harris, an attorney who helped establish the community. Coal mining began in 1854 and soon became Harrisburgâs chief industry.