Indonesia: Rainy Season OCHA Situation Report

Situation Report
Originally published


Rainy Season in Indonesia - September to date


- Since the rainy season started in September, at least 54 people have been killed with the highest number of fatalities occurring in November alone - 33 fatalities;

- During this period, at least 31,500 people were temporarily displaced; in a number of cases the local government provided emergency shelter for the affected population;

- The most destructive flooding incidents in terms of temporary displacement of residents and damage to infrastructure were located in East Kalimantan and Gorontalo Provinces;

- West Java Province has suffered the greatest impact in terms of number of fatalities - over 17 persons killed so far.

- Over 210 people suffered from water borne diseases as a result of flooding in North Sumatra and West Sumatra Provinces;

- Approximately 45,700 houses were temporarily inundated by flood waters, which have generally receded within hours or days.

Situation Overview:

The rainy season started in September across Indonesia and has resulted in numerous cases of flash flooding and landslides caused by torrential rains and excessive precipitation. Overpopulation with all its related consequences such as people inhabiting vulnerable areas, deforestation and urbanization in many cases has exacerbated the situation. The following is an overview of the major incidences of flooding and landslides across the archipelago including a map highlighting the localized disasters.


- At least 16 fatalities were reported in seven provinces: North Sumatra, South Sulawesi, Gorontalo, Maluku, Riau, Central Sulawesi, and West Java, with an approximate inundation of 23,600 houses;

- In five districts of North Sumatra Province, flood waters exceeding one metre inundated over 4,000 houses for several days, causing three fatalities and an outbreak of water-borne diseases which affected 53 people;

- A total of 48 temporary displacement centres were set up for over 17,000 people who were displaced by flooding in Gorontalo City, Gorontalo Province; the flood waters receded after two days;

- Over 10,000 houses in three districts of Riau Province were inundated by flood waters, which receded slowly and kept some areas affected for over one week;

- Large areas of South Kalimantan, Central Kalimantan and East Kalimantan Provinces were flooded and hindered land transportation for over a week; approximately 5,000 houses were inundated as flood waters reached two metres -- East Kalimantan was the most affected province.


- At least five people were killed and flooding affected nine provinces: Central Java, Gorontalo, West Kalimantan, Central Sulawesi, Bali, Bengkulu, Banten, North Sumatra and West Java. Flood water inundated approximately 5,500 houses;

- Over 11,000 people were displaced again in Gorontalo City, Gorontalo Province when floods inundated over 2,000 houses; BNPB deployed a team to the area and the local government set up evacuation centres and distributed non-food items;

- Flood waters which reached 1.5 metres in three districts of North Sumatra Province inundated at least 1,000 houses during two days.


- At least 33 people were killed by flooding or landslides, most notably with 17 fatalities in Central Java Province. Flooding occurred in ten provinces: West Sumatra, Bengkulu, South Sulawesi, Central Sulawesi, West Sulawesi, Southeast Sulawesi, Central Java, East Java, West Java and East Kalimantan and approximately 16,600 houses were inundated;

- At least 1,000 houses were inundated by flash flooding in South Sulawesi Province, killing three people, injuring over 200 and temporarily displacing at least 1,000 residents;

- A severe landslide, triggered by heavy rain, killed 17 people and displaced approximately 2,400 people in Cianjur District, West Java; over 500 houses resulted damaged;

- Flood water reaching 1.5 metres high affected Samarinda City, East Kalimantan Province; almost 12,000 houses and the airport were inundated by water killing one person. Even though the flood waters receded after four days, there was no displaced population.

UN Office for the Coordination of Humanitarian Affairs
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