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Distributions of Return Flow in Navigable Waterways

by Ta Wei Soong, (M.ASCE),
Renjie Xia, (A.M.ASCE),
Nani Bhowmik, (F.ASCE),



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Physical impacts of barge traffic on the riverine environment have drawn increasing attention from resource managers of the Upper Mississippi River System (UMRS). Return flow, which can cause sediment resuspension and redistribution in channel border areas, occurs during barge passages. Its peak magnitude is generally three to ten times higher than the ambient flow. In order to predict the magnitude of return flow at various locations in a river, it is necessary to know the flows distribution from barge to shore. The Illinois State Water Survey has collected field data from the Upper Mississippi and Illinois Rivers. This paper discusses the lateral and vertical distribution of return flow at various sites on the basis of these field data.

Subject Headings: Flow distribution | Barges | Rivers and streams | River flow | Return flow | Waterways | Suspended sediment | United States | Mississippi River | Illinois | Mississippi

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