Emergency scenarios in the Banger polder, Semarang City: a case study to identify different emergency scenarios

Abstract

In Semarang urban coastal areas experience daily flooding from the sea during high tide (tidal flooding). Flourishing residential areas have changed into unhealthy slums with the nuisance of daily flooding in parts of the city. To overcome these problems a polder system was implemented to address the tidal flooding. The Semarang polder system is the first fully operational polder system in a densely populated urban area in Indonesia. This article describes the polder system that prevents flooding in the Eastern part of the city; the Banger polder area. An important element of the polder system is an emergency response plan that prepares for a flood emergency condition. The emergency response plan provides different emergency scenarios and identifies emergency levels and criteria. The management of emergency situations can be divided into four phases, namely mitigation, preparedness, response and recovery. The research results provide a detailed description of four emergency scenarios with 3 emergency levels for each scenario in the Banger polder area. The scenarios are; pumping stations operational damage, high-intensity rainfall in combination with high tide, failure of levees and dams, and an inflow of water from the west and east side of Polder system area.

The Design Of Water-Filled Rubber Dam As An Efficient Innovation In Preventing Tidal Flood (Rob)

“…Testing the physical model with a simulation of several experiments was done to get the calculation of the stability of the water-filled dam and the effective dimension in handling flood and robs. [6]. The objects in this study were to calculate the water discharge, the dimension of the dam, the stability of the dam with the loading behavior in the water-filled dam quickly and correctly.…”

Tidal Flood Handling through Community Participation in Drainage Management System (A case study of the first water board in Indonesia)

“…Internal factors affecting participation is derived from the group itself, the individual or the group members and the unity of the group itself. Theoretically, the behavior of individuals closely linked or determined more by the sociological characteristics such as education, occupation, income, gender and age [7]. In addition, one of the prerequisites for obtaining participation in a program of development is the availability of information for those participating.…”

“…Polder system includes not only the construction of flood resistant buildings, but also the establishment of the Organization Polder. Banger Pilot Project is a form of cooperation Government to Government between the Government of Indonesia in this regard the Government of Semarang and the Netherlands Government to establish an integrated system Banger between technical, institutional, and operations and maintenance [7].…”

Flushing Methods in Polder Drainage System to Obtain Better Environment Quality

“…The Polder area is vulnerable to flooding caused by high water levels during high tide and more during heavy rain. Climate change which may cause high sea level forms a serious threat for the coastal areas of Semarang that are located at below sea level [1]. The business site is improving the hygiene and water quality in the Banger Area by flushing the canal drain during draught.…”