The Implementation Strategy of Flood Control Program Based on Multi Criteria Assessment in Pangkalpinang City, Bangka Belitung Islands Province

Abstract

Flood event is occurred almost every year in Pangkalpinang City with the most devastating flood event was occurred in 2016 historically. Irrespective of being caused by extreme rainfall and high tides, the flooding occurred due to a decrease in the hydrological condition of the watershed due to illegal tin mining activities in the upstream area. This paper discusses the flood control strategies in Pangkalpinang City which is based on Multi Criteria Assessment (MCA). The MCA considering the technical aspects (i.e. hydraulic model) and non-technical aspects (i.e. risk assessment, economic, social, and environmental aspects) to prioritize the infrastructure conbstruction. Therefore, some areas are already identified as the focal problems that need to be applied by the concept of integrated flood control program. At the moment in 2023, the first construction priority is in PDAM-Jelana Detention Pond Flow Diversion from Pedindang River in the upstream area. For the future plan, it is planned to carry out the flood control construction according to the priority analysis namely Perak Retention Pond, River Training, Rangkui Tidal Gates, Pasir Padi Sea Wall and New-Tin Detention Pond.