Team discussing the impact and the recommendation for counter measurement.

TDMRC, Mataram Government Discuss Coastal Hazards Management

Expose of the condition of Mataram coastal area conveyed by Eko Pradjoko Ph.D. from the University of Mataram.
Expose of the condition of Mataram coastal area conveyed by Eko Pradjoko Ph.D. from the University of Mataram.

TDMRC under Syiah Kuala University were collaborating with the University of Mataram and BAPPEDA of City of Mataram in held an FGD for Coastal Management and Disaster Mitigation toward Sea level rise impact. The discussion was held on March 12 in the Bappeda Mataram city’s office. The event was the continuation of the previous focus group discussion (FGD) which formulated the team for the coastal management of the city of Mataram.

The discussion was attended by coastal management related stakeholders and academics and practitioners such as Public Works and people’s housing,  KOTAKU (NGO), BAPPENAS, BWS I West Nusa Tenggara, Balitbang, DKP,  and the University of Mataram and Syiah Kuala University. The discussion was opened by Mr. Tio Ganeru from BAPPEDA of Mataram, and the main issue were presented by Dr. Eng Syamsidik and Eko Pradjoko Ph.D. regarding existing and projection impacts of sea level rise towards the coastal region of Mataram.

Expose of the impact projection of coastal hazards in city of Mataram by Dr. Syamsidik
Expose of the impact projection of coastal hazards in city of Mataram by Dr. Syamsidik

Mataram coastal line has facing the coastal abrasion and coastal flood since before. The coastal abrasion has gone quite far according to former documentation, Eko Pradjoko said. The dominant waves that came from north-west would erode the northern part and bring it all the way down to the south if the condition of the sediment supply from the river were not sufficient enough. The extreme high waves were also transported the sediment inland, and sometimes quite far. This condition will be causing the sediment unable to be transported back the nearshore.

The projection of the potential impact of coastal hazards in coastal area around the city of Mataram was also assessed and conveyed by Dr. Eng Syamsidik in the next session. The research revealed that in the next 50 to 100 years the sea level rise triggered the amplificated impact. The sea water intrusion were worsened by reaching the further to the river and other channels. The increased water level that combined with the extreme waves were also giving high waves that transport and breaching inland through the dunes and lower part of the coastal area. There are a few coastal area will be affected according to the prediction. A few scenarios were applied from the existing condition (2018) to the future plan projection of coastal protection.