Indonesia: IHCP Situation Report #11 on Floods, Flash Floods, and Landslides in Aceh, North Sumatra, and West Sumatra provinces (31 January 2026)

This report was compiled and published by the Indonesian Humanitarian Coordination Platform (IHCP). The next report will be issued on or around February 8, 2026.

Highlights

• As of January 31, 2026, the National Disaster Management Agency (BNPB) reported that the number of displaced persons had decreased to 106,000 (source: https://gis.bnpb.go.id/bansorsumatera2025/).

• The death toll has reached 1,204, with 140 people missing across 53 districts/cities in the provinces of Aceh, North Sumatra, and West Sumatra.

• The largest number of displaced persons is in Aceh Province (85,900 displaced). In North Sumatra, 11,100 people were displaced, and in West Sumatra, 9,000 people were displaced.

• The total number of damaged houses has increased to 264,105. The number of severely damaged houses in Aceh reached 40,582 out of a total of 217,888 damaged houses. Meanwhile, 7,492 out of 30,479 houses were severely damaged in North Sumatra, and 5,322 out of 15,738 houses were damaged in West Sumatra.

• In Aceh, as of January 29, the increase in cases of acute respiratory infections (19,557 cases) and skin diseases (14,978 cases) indicates a public health problem requiring ongoing attention, related to exposure to contaminated water, poor environmental sanitation, overcrowding, and high humidity in evacuation sites. The increase in cases of diarrhea (3,080 cases), typhoid (325 cases), and influenzalike illness (ILI) (1,905 cases) illustrates the prevalence of non-specific acute respiratory infections and water- and food-borne illnesses in the post-flood period.

Situation Report

• As of January 31, the National Disaster Management Agency (BNPB) reported that the number of displaced persons had decreased to 106,000. The death toll had reached 1,204, with 140 people missing in the three provinces. The largest number of displaced people was in Aceh Province (85,900). North Sumatra has 11,100 people displaced, and West Sumatra has 9,000 people displaced.

• In Aceh Province, the largest number of displaced people was in North Aceh Regency (33,300), followed by Pidie Jaya (14,800), and Gayo Lues (13,100). In North Sumatra, the largest number of displaced persons were in Central Tapanuli Regency (4,900), Langkat (2,300), and South Tapanuli (1,900). In West Sumatra, there were 9,000 displaced people, with the largest number in Agam Regency (2,500), Tanah Datar (1,600), and Padang City (1,400).

• The BNPB dashboard reports a total of 264,105 damaged houses, with 53,396 severely damaged, 151,577 lightly damaged, and 59,132 moderately damaged. The number of severely damaged houses in Aceh reached 40,582. Meanwhile, 7,492 houses were severely damaged in North Sumatra and 5,322 in West Sumatra.

• In Aceh Province, as of January 29, the increase in cases of acute respiratory infections (19,557 cases) and skin diseases (14,978 cases) indicates a public health problem requiring ongoing attention related to exposure to contaminated water, poor environmental sanitation, overcrowding, and high humidity in evacuation sites. The increase in cases of diarrhea (3,080 cases), typhoid (325 cases), and influenza-like illness (ILI) (1,905 cases) illustrates the prevalence of non-specific acute respiratory infections and water- and food-borne illnesses in the post-flood period.

• The Ministry of Women's Empowerment and Child Protection, in a coordination meeting of the Task Force for the Acceleration of Post-Disaster Rehabilitation and Reconstruction in Aceh, North Sumatra, and West Sumatra on January 15, highlighted issues that typically occur during emergency response, such as women experiencing stress/trauma due to the loss of parents, husbands, children, other family members, homes, possessions, and sources of income, the increased risk of women becoming victims of genderbased violence (GBV), the increasing number of women as heads of households, and the lack of womenfriendly facilities/spaces in evacuation sites. Meanwhile, children's problems include separation and trauma due to the loss of parents, homes, and play environments, children being unable to attend school and thus having a lot of free time, the lack of child-friendly facilities/spaces in evacuation sites, and children's vulnerability to violence, exploitation, neglect, and other abuse.

• The Ministry of Home Affairs reported the loss of 29 villages in 6 districts due to floods and landslides. As of January 12, 2026, 21 villages/gampongs were lost in Aceh Province (5 villages in Aceh Tamiang Regency, 2 villages in Nagan Raya, 6 villages in Central Aceh, and 8 villages in Gayo Lues) and 8 villages were lost in North Sumatra (6 villages in South Tapanuli Regency, and 2 villages in Central Tapanuli). Furthermore, estimated losses to village governments (damaged village offices and affected village officials) amounted to Rp 323,715,950,000 due to the destruction of 1,681 village offices, 104 village halls, 20 village markets, 22 village-owned enterprises (BUMDes), and 1 village/sub-district cooperative.

• In the trade sector, 2,041 small and medium-sized industrial units were affected (1,165 in Aceh, 58 in North Sumatra, and 368 in West Sumatra).

• In shelter sector, the challenge is ensuring protection for disaster-affected communities who have lost their homes, especially families who rent. They are not prioritized for housing or included in the data on damaged houses. Policies that take these factors into account are needed.

• In water, sanitation and hygiene sector, accelerating the construction of temporary shelters (huntara) and temporary shelters (huntap) requires ensuring the provision of clean water, sanitation, and drainage in the constructed temporary shelters, including adequate accessibility/accommodation for at-risk groups, and ensuring the meaningful participation of at-risk groups in planning, implementation, and monitoring.

• There are unconfirmed reports of areas that remain isolated. A report received by the IHCP regional coordinator states that Sijudo Hamlet, Sijudo Village, Pante Bidari District in East Aceh is still impassable by two- and four-wheeled vehicles.