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Soil Erosion, Sediment Yield, and Deposition in the Illinois River Basin

by Ming T. Lee, Illinois State Water Survey, United States,



Document Type: Proceeding Paper

Part of: Sediment Transport Modeling

Abstract:

The amount of soil erosion of the Illinois River Basin was estimated by using the 1982 National Resources Inventory (NRI) and the Illinois Geographic Information System (GIS). The sediment yield was computed by using the Upper Mississippi River Comprehensive Study method. The results were verified by sediment measurements at three stream gaging stations in the Illinois River Basin. The sediment deposition rate was estimated on the basis of the sediment yield discharge into the river valley and the Mississippi River. The results were compared with the observed sedimentation rates of the backwater lakes. This sediment budget is useful for statewide and regional water resources planning.

Subject Headings: Sediment | River bank stabilization | Water resources | Basins | Rivers and streams | Erosion | Geographic information systems | Illinois | United States | Mississippi River

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