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Sedimentation Aspects of Floodplain Management

by Hyoseop Woo, Korea Inst of Construction, Technology, Seoul, Republic of Korea,
Baum K. Lee, Korea Inst of Construction, Technology, Seoul, Republic of Korea,
Kwonkyu Yu, Korea Inst of Construction, Technology, Seoul, Republic of Korea,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

This paper presents sedimentation aspects of a recent disastrous flood that occurred during September 10-12 1990 in the Han River basin, a central part of the Korean peninsula. The flood caused massive sediment deposits on the flood plains and great damages to the public facilities and infrastructures that had been constructed only recently. The flood also taught some valuable lessons to the concerned government authorities and engineers. They include: 1) A sound management of urban floodplain developed should encompass plans for alleviation of sediment deposition and for effective measure of sediment removal after flood; 2) Planning and design of floodplain modifications and developments must be based on careful studies on behavior of movable boundary rivers such as the Han River during extreme flood events; and 3) Sediment data as well as hydrologic data related to the flood of September 10-12 should be collected and documented for improvement in the future floodplain management.

Subject Headings: Floods | Sediment | Rivers and streams | Hydrologic data | Flood plains | Urban and regional development | Public buildings

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