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Indonesia: Floods and Landslides - Jan 2021

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Indonésie
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Indonesia’s Meteorological, Climatological, and Geophysical Agency predicts the peak of La Nina to occur in December 2020 and January 2021. The peak of La Nina coincides with the peak of rainy season which usually occurs between January and February. The agency also states that this phenomenon could increase precipitation which triggers heavy rainfall across the country. During this period, Indonesia frequently suffers flood and landslides. As of January 14, 2021, several provinces in the country had reported floods and landslides since the beginning of the year[:]
- Flooding in Lhokseumawe and Langsa, Aceh province, 4 January 2021
- Flash Flooding in Malang District, East Java Province, 8 January 2021
- Flooding in Nunukan District, North Kalimantan, 8 January 2021
- Flooding in Bima, West Nusa Tenggara, 10 January 2021
- Landslides in Sumedang District, West Java Province, 11 January 2021
- Flooding in Solok, West Sumatra, 12 January 2021
- Flooding across South Kalimantan Province, up to 14 January 2021
- Floods in Bandung District, West Java Province, 13 January 2021 (IFRC, 16 Jan 2021)

As of 17 January, seven cities / regencies in South Kalimantan were affected by the flood triggered by high intensity rain since 9 January. At least 210,140 people were affected by the flood with around 39,500 people displaced according to the report from Indonesia’s Badan Nasional Penanggulangan Bencana (BNPB). Most of the flood area are not only concentrated in the downstream of the Barito watershed, but also spreading across affected regencies. (AHA Centre, 18 Jan 2021)

The Indonesian National Board for Disaster Management (BNPB) and the AHA Centre report, as of 21 January, 114 displaced people, more than 21,150 affected people and nearly 5,400 damaged buildings in Cirebon Regency (West Java Province). In addition, around 1,600 displaced, nearly 3,600 affected and 760 damaged buildings were reported across East Aceh, and Aceh Tamiang Regencies (Aceh Province). Moreover, more than 70 affected families and 12 damaged buildings were reported in Paniai Regency (Papua Province). (ECHO, 21 Jan 2021)

Since 18 January heavy rainfall has been reported across Java, northern Sumatra and northern Sulawesi Islands (Indonesia), triggering flooding which resulted in fatalities, affected about 4,350 residents and damaged at least 519 buildings. According to AHA Centre, two people died and two others were injured in Mandao City (North Sulawesi Province), as a result of flooding caused by heavy rainfall and river overflow, while minor landslides have been also reported. More than 2,235 individuals have been displaced in North Sulawesi, Aceh Province (north Sumatra) and East Java Province. (ECHO, 25 Jan 2021)

According to reports from the Indonesian National Board for Disaster Management (BNPB), heavy rainfall in West Nusa Tenggara, Indonesia resulted in localised flooding incidents. Flash floods have been reported in Sumbawa Regency. Meanwhile in West Lombok, the heavy rain increased discharge of the Telaga Lebur and Kelep Rivers. Lastly in Central Lombok, the heavy rainfall resulted in flooding. These events affected 1,700 families (6,000 people) and damaged 1,700 houses. According to latest reports, the rain has subsided, and the floods have started to recede. (AHA Centre, 31 Jan 2021)

Widespread floods caused by heavy rainfall have been affecting Kalimantan (Indonesian portion of the island of Borneo) and Java over the past few days, resulting in casualties and damage. According to the ASEAN Coordinating Centre for Humanitarian Assistance on Disaster Management (AHA Centre), more than 1,100 people have been affected, 90 houses damaged as well as several infrastructures across the Provinces of West Java and East Java. The Indonesian National Board for Disaster Management (BNPB) reports 1,183 affected people and 483 damaged houses in Balangan Regency (South Kalimantan Province). (ECHO, 3 Feb 2021)

The Indonesian National Board for Disaster Management (BNPB) reports, as of 4 February, one fatality, one person missing, 65 displaced and 11,650 affected people and eight houses severely damaged across Pasuruan Regency (East Java Province). Around ten displaced people, 3,100 affected people and 620 damaged houses were also reported in Nganjuk Regency in the same Province. In addition, more than 10,650 affected people and nearly 3,250 damaged houses were reported across Kudus Regency (Central Java Province). (ECHO, 5 Feb 2021)

Rainy season floods have continued in a number of locations in Indonesia in the past week, including in Jakarta, Bogor, Pekalongan, Cilegon, Jember in Java, Singkawang and Bengkayang in West Kalimantan, as well as in Bima, Dompu, and East Lombok. Large floods and landslides in Semarang City in Central Java on 5-7 February resulted in four deaths and millions of people affected. On 6-7 February, heavy rain in Bekasi and Karawang in West Java caused flooding which resulted in at least 9,000 households displaced. While on 2-3 February, floods in Kudus in Central Java directly affected over 10,000 people. Local governments have responded to the emergencies. (OCHA, 9 Feb 2021)

Following widespread floods and landslides that have been affecting West Java Province since 4 February, the number of casualties has increased. According to the ASEAN Coordinating Centre for Humanitarian Assistance on Disaster Management (AHA Centre), 63,700 people have been displaced, 156,800 affected and 39,100 houses damaged across eight Regencies. Additional floods have been reported in West Nusa Tenggara Province where 1,695 people have been displaced and 3,875 affected, and in Papua Province with 4,406 affected people. (ECHO, 11 Feb 2021)

Heavy rainfall has been affecting Central Java Province since 10 February, causing floods, triggering landslides and resulting in fatalities and damage. According to the Indonesian National Board for Disaster Management (BNPB), two people have died, one is missing, 90 people have been displaced and 108 families have been affected across five villages in Kebumen Regency (southern Central Java Province). In addition, 108 houses were flooded as well as one school. (ECHO, 12 Feb 2021)

A landslide triggered by heavy rainfall occurred in Ngetos Village (Nganjuk Regency, East Java Province) on 14 February, resulting in casualties and damage. According to the Indonesian National Board for Disaster Management, two people have died, 16 are still missing, 17 have been injured and eight houses severely damaged. At the same time, some parts of East Java Province have been hit by widespread floods, leading to 357 people displaced and 294 families affected. (ECHO, 15 Feb 2021)

After the landslide occurred in Ngetos Village (Ngetos District, Nganjuk Regency, East Java Province) on 14 February, the number of casualties has increased. The Indonesian National Board for Disaster Management (BNPB) reports, as of 16 February, nine fatalities, 16 injured, 156 displaced and 175 affected people. In addition, eight buildings were reported severely damaged. (ECHO, 16 Feb 2021)

Heavy rain has been affecting Java Island (in particular West Java, and Jakarta Provinces), since 19 February, causing rivers overflow and floods that have resulted in casualties and damage. The Indonesian National Board for Disaster Management (BNPB) reports, as of 22 February, more than 4,180 displaced, 28,329 affected people and 8,539 damaged houses across Karawang Regency (West Java Province) due to the overflow of the Citarum River. In addition, five destroyed houses were reported across Bekasi Regency in the same Province. In the Jakarta City area, the same source reports more than 1,220 displaced and around 1,100 affected people. Flooding was also reported in Bekasi Regency on 21 February. (ECHO, 22 Feb 2021)

Heavy rain continued to affect the Java Island (in particular West Java, and Jakarta Provinces) since 19 February, causing rivers overflow and floods that have resulted in more casualties and damage. The Indonesian National Board for Disaster Management (BNPB) reports, as of 23 February, five fatalities, two people missing, nearly 31,400 evacuated and more than 176,150 affected people across the Grater Jakarta area. In addition, almost 19,100 displaced and more than 52,500 affected people were reported across Karawang Regency (West Java Province), in particular due to the overflow of the Citarum River. (ECHO, 23 Feb 2021)

On 22-23 February, heavy rain caused flooding in West Nusa Tenggara Province (Lesser Sunda Islands) affecting at least 4,800 residents, as reported by AHA Centre. In addition, floodwaters have damaged about 1,100 houses across Dompu and Sumbawa Regencies. (ECHO, 24 Feb 2021)

Heavy rain and strong wind have been reported across several areas of Indonesia, causing landslides, flooding and tornado events, which resulted in at least eight fatalities. According to national authorities, a landslide occurred in Pamekasan Regency (East Java Province) on 24 February, killing five people, injuring a number of individuals and damaging around 20 houses. Another landslide event occurred on the same day in Parigi Moutong Regency (Central Sulawesi Province), leading to three fatalities and five individuals are still missing. AHA Centre reports that a tornado event in Demak Regency (Central Java Province) affected more than 650 people displaced 45 individuals, and damaged around 200 buildings. Flooding triggered by heavy rain in West Halmahera Regency (North Maluku Province) left 100 affected residents and damaged 20 public buildings. (ECHO, 25 Feb 2021)

Flooding caused by heavy rain on 23 February has been reported in six sub-districts of Semarang City (Central Java Province). According to AHA Centre, about 90,590 residents were affected and 9,169 houses have been flooded. Local authorities continue with rapid assessment operations and are assisting the affected population with food and relief items. (ECHO, 26 Feb 2021)

Heavy rain continues to affect the Java Island (in particular Central Java Province) since 23 February, causing floods and triggering landslides that have resulted in more casualties and damage. Media reports as of 1 March, one fatality in Tegalsari (Semarang City, Central Java Province) due to the floods and three rescued people in Gajahmungkur (Semarang City) due to landslides. Previously, more than 90,500 affected people were reported across six districts (East Semarang, North Semarang, West Semarang, Pedurungan, Genuk and Gayam Sari) of the same Province. (ECHO, 1 Mar 2021)

On 1-2 March, heavy rain caused flooding and river overflow in East Java Province (Indonesia), resulting in at least 2,160 affected people. As reported by AHA Centre, the hardest-hit areas are Bojonegoro and Banyuwangi Regencies. In Bojonegoro Regency, the overflow of Anak Pacal River has damaged about 386 houses and one medical facility and at least 46 housing units have been damaged in Banyuwangi Regency. (ECHO, 4 Mar 2021)