IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Sediment management and morphodynamics : Sediment transport, contaminants, and cleanup litigation: the application of sediment trend analysis...
Sediment transport, contaminants, and cleanup litigation: the application of sediment trend analysis (sta®) in the restoration of the buffalo and fox rivers
Due to environmental problems, including contaminated sediment, both the Buffalo and Fox Rivers have been identified as
Great Lakes Areas of Concern. Both rivers also are currently undergoing environmental restoration, a major component of
which involves the removal of contaminated sediment. Our work focuses on STA, a kinematic model that differs from the
dynamic approach in that the former is based on observations (the grain-size distributions of the sediments), whereas the
latter requires assumptions of the probable processes responsible for sediment erosion, transport and deposition. STA
examines the relative changes in the grain-size distributions of the substrate from which the sediment transport patterns
and depositional behavior can be obtained. In the Buffalo River, the derived patterns of sediment transport revealed the
importance of Lake Erie wind-driven surges that elevate lake level at the east (Buffalo) end of the lake. Surges can
propagate in the direction opposite to the river's flow direction and are capable of transporting sediment upriver, a process
recognized, but not taken into account in river management decision-making. In applying STA to assess cleanup litigation
issues in Green Bay it was discovered that wind-driven surges are also important, but had largely been overlooked as an
important process capable of reversing the flow direction of the Fox River. In both rivers, STA successfully delineated
sediment transport pathways and revealed complex patterns of sediment transport. The findings were also used to assess
the validity of dynamic models illustrating the value of kinematic modeling and its place in river restoration decisionmaking.
File Size : 3,257,265 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Sediment management and morphodynamics
Date Published : 12/08/2015
Download Now