KAJIAN OPERASIONAL SISTEM POLDER UNTUK PENANGANAN BANJIR DAN ROB DI KAWASAN GENUK SEMARANG

Abstract

The Kaligawe Genuk area is the main route for the North Coast (Pantura) of Java. The area is the gateway to the city of Semarang from the east direction. Since 2005, this area has frequently had floods caused by tides (tidal floods) and rainfall. The Central Government, supported by the Semarang City Government, built the Kali Tenggang and Sringin Polder systems from 2016 to 2019. In terms of capacity, this system is not yet perfect for dealing with floods, and it requires efforts so that the system can be operated optimally. This study activity aims to simulate rainfall flow rate, the pump capacity, and the retention pond. The simulation results will become the basis for the development of the polder system operational manual. The implementation method collects secondary rainfall data, reviewing the condition of a catchment area, retention pond, and pump station. Focus group discussion with stakeholders done in the Kaligawe Genuk area. The location of the activity is more focused on the Kali Sringin area. This study produces tables and graphs of pump capacity simulation, retention ponds, and an operational manual for the Sringin Polder system. It is hoped that this guideline will become the basis for the polder system's sustainable operations.