Evaluation on Merauke Drainage System in Overcoming Flood-Prone Areas

Abstract

Merauke city suffers flooding in almost every rainy season, which endangers the environment and disturbs<br />people's activities. One of the worst floods happened in 2019, where flooding damaged vegetables and crops, impacted<br />the city's economy, and later caused economic inflation. Therefore, a study evaluating the drainage system in Merauke<br />city is needed to overcome this issue. This study was conducted through a field survey and literature study with data<br />that varies from hydrological, elevation, and hydraulics data. Hydrological data includes yearly rainfall data, and<br />hydraulics data consists of the drainage network and designs. This evaluation will then result in the normalization of a<br />drainage system. This study found that the capacity of the current drainage system is 10.815 m3/s, where this drainage<br />capacity cannot accommodate the amount of flood discharge plan. Also, the existing drainage system is missing a<br />component that was not built in the first place, affecting the drainage's capacity. Therefore, a normalization of the<br />drainage system is needed to avoid flooding.