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Cost Allocation between Upstream and Downstream Regions for Flood Mitigation Management

Chonngsung Yi 1 유재영 1 여규동 1 Sang-Won Lee 1

1인하대학교

Accredited

ABSTRACT

Since the river usually flows over several regions, there may have the cost allocation issues for constructing flood protection measures in flood mitigation management. The purpose of this study is to suggest an alternative for the solution of a cost allocation issue that usually occurs at planning projects for flood mitigation management. As a case study, we selected the cost allocation issue in constructing flood protection measures in Najinpo and Gyeoyang rivers, which are tributaries of Han river and flow through Incheon in upstream and Gimpo in downstream, and suggested the inter-regional cost allocation method from the case study. The theoretical approach for the cost allocation was based on the cooperative game theory, and in terms of methodology, we used the SCRB (Separable Cost Remaining Benefit) and Shapley value method which are comparatively easy to apply. From the study, the cost allocation ratio between upstream and downstream regions are approximately 54% vs. 46% in Najinpo river basin and 70% vs. 30% in Gyeoyang river basin respectively. This study is expected to provide an alternative for solving the similar cost allocation problems for flood mitigation management which may be occurred frequently in the future between two or more regions, especially upstream and downstream.

Citation status

* References for papers published after 2022 are currently being built.