Waspada! 9 Wilayah Pesisir Jakarta Utara Berpotensi Banjir Rob

Summary

The coastal areas of North Jakarta face a serious risk of tidal flooding (rob) due to rising sea levels and land subsidence. The BPBD DKI Jakarta has issued a warning for potential flooding from January 3-10, 2023, highlighting 9 vulnerable points along the coastline. This is exacerbated by Jakarta's soft, aluvial soil, which sinks by up to 20 cm per year. The city’s rapid urban development, over-exploitation of groundwater, and natural geological conditions contribute to the ongoing subsidence. The authorities are working on monitoring and mitigation strategies to prevent further damage and protect residents from the growing threat of flooding.

Takeaways

• 😀 9 coastal points in North Jakarta are at risk of tidal flooding (banjir rob), especially during high tide events in early January 2023.
• 😀 BPBD DKI Jakarta issued a warning about tidal floods, particularly between January 3-10, 2023, with a maximum tidal surge expected on January 6, 2023.
• 😀 Jakarta's coastal areas, including Penjaringan, Pluit, Ancol, and Muara Baru, are the most vulnerable to flooding due to land subsidence and rising sea levels.
• 😀 Land subsidence in Jakarta is a significant problem, with the ground sinking by up to 20 cm per year in certain areas, increasing flood risks.
• 😀 95% of Jakarta's coastal areas are expected to be below sea level by 2050, further escalating flood risks in the region.
• 😀 The rise in sea levels by about 6 mm per year, coupled with Jakarta’s land subsidence, creates a compounded threat to the city’s coastal communities.
• 😀 Jakarta’s alluvial soil and excessive groundwater extraction contribute to the city’s land subsidence, which causes the ground to sink gradually.
• 😀 BPBD DKI Jakarta and other local agencies, such as Bina Marga and the Department of Water Resources, are actively monitoring and managing flood risks.
• 😀 The Indonesian National Disaster Management Agency (BNPB) has noted the broader regional impact of extreme weather, with heavy rainfall and flooding affecting many parts of Indonesia.
• 😀 The city’s long-term strategy includes monitoring groundwater usage, enhancing flood management systems, and engaging the community in flood prevention efforts.

Q & A

What is the main cause of the potential flooding (banjir rob) in North Jakarta?

The main causes of the potential flooding in North Jakarta are rising sea levels and land subsidence. The city's soft, alluvial soil naturally sinks, and excessive groundwater extraction worsens the problem.

What is the estimated rate of land subsidence in Jakarta?

Land subsidence in Jakarta can occur at a rate of 1 to 10 cm per year, with some areas experiencing up to 20 cm of subsidence annually.

How much of Jakarta’s northern coastal area is below sea level?

Approximately 95% of Jakarta’s northern coastal area is currently below sea level.

When was the warning issued by BPBD DKI Jakarta for the potential flooding?

The warning for potential flooding (banjir rob) was issued for the period from January 3 to 10, 2023.

Which areas in North Jakarta are most at risk of flooding?

The areas most at risk of flooding in North Jakarta include Penjaringan, Pluit, Ancol, Tegal Alur, Muara Baru, and Muara Angke.

What are some of the underlying factors contributing to Jakarta's land subsidence?

Underlying factors include Jakarta's location on alluvial land, excessive groundwater extraction, and the weight of buildings and infrastructure that further compress the soft soil.

How much has the sea level risen around Jakarta annually?

Sea levels around Jakarta are rising at a rate of approximately 6 mm per year.

What measures are being taken by the government to address the flooding risk?

The government is implementing measures such as building embankments, dredging rivers, regulating groundwater extraction, and monitoring infrastructure development to reduce the risk of flooding.

How are local authorities monitoring the use of groundwater in Jakarta?

Local authorities are monitoring groundwater use through various agencies like the Department of Water Resources (Dinas Sumber Daya Air) and collaborating with the Anti-Corruption Commission (KPK) to prevent excessive extraction.

What role does the Jakarta Siaga 112 service play in managing flood risks?

The Jakarta Siaga 112 service operates 24/7, allowing residents to report emergency issues, including those related to flooding and other disaster risks, helping to manage disaster response effectively.