Bachtiar, H.; Eliasta, L.; Farid, M.; Hambali R.; Lee, S.T.; Anggraeni, L.; and Muslimin, 2023. Integrated flood countermeasures in the delta areas of Pangkalpinang City, Indonesia. In: Lee, J.L.; Lee, H.; Min, B.I.; Chang, J.-I.; Cho, G.T.; Yoon, J.-S., and Lee, J. (eds.), Multidisciplinary Approaches to Coastal and Marine Management. Journal of Coastal Research, Special Issue No. 116, pp. 136-140. Charlotte (North Carolina), ISSN 0749-0208.

A flood event has occurred almost every year in Pangkalpinang City, including the most devastating flood event in 2016 historically. Regardless of being caused by extreme rainfall and high tides, the flooding occurred due to a decrease in the hydrological condition of the watershed resulting from illegal tin mining activities in the upstream area. This paper discusses the flood control strategies in Pangkalpinang City, which were based on a hydrological-oceanographic modeling approach and a spatial risk analysis approach. The hydraulic model was employed to identify the water flow behavior by reconstructing the extreme flood event in 2016. Simulation results indicated the bottleneck effects in these three main waters shed of Rangkui River, PedindangRiver, and Lantai River. Simultaneously, the tidal fluctuation in Bayur Bay was in a high tide period and hence disturbing water flow. The maximum inundation at some points in the city is approximately two meters and the simulation results were validated by field observation data.

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