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Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced

Heru Andriyanto, Panji Satrio
November 27, 2025 | 10:35 pm
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This aerial photo shows a village along the Medan-Banda Aceh main road submerged by floods in Peuribu Village, West Aceh, Aceh, on Thursday, November 27, 2025. (Antara Photo/Syifa Yulinnas)
This aerial photo shows a village along the Medan-Banda Aceh main road submerged by floods in Peuribu Village, West Aceh, Aceh, on Thursday, November 27, 2025. (Antara Photo/Syifa Yulinnas)

Medan. Severe floods and landslides across the Indonesian island of Sumatra have left at least 62 people dead and displaced thousands of residents over the past three days, according to updated figures released by local authorities on Thursday.

The worst impact has been recorded in North Sumatra, which reported 37 fatalities. The hardest-hit areas include:

  • South Tapanuli — 17 dead
  • Sibolga — 8
  • Central Tapanuli — 4
  • Humbang Hasundutan — 4
  • Pakpak Bharat — 2
  • South Nias — 1
  • Padangsidimpuan — 1

In West Sumatra, 12 more deaths were confirmed, including four in Sungai Minturun, Padang, where overflowing river currents carried mud and uprooted logs into surrounding neighborhoods, said Abdul Muhari, spokesperson for the National Disaster Mitigation Agency (BNPB).

Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced
A villager watches a flash flood that strikes underneath a mosque in Padang, West Sumatra, on Tuesday, November 25, 2025. (Antara Photo/Iggoy el Fitra)

In Bener Meriah Regency, Aceh, flash floods and landslides have struck several districts since Wednesday, leaving 13 people dead and 12 others missing. The head of the Bener Meriah Communications and Information Agency, Ilham Abdi, said communication networks are down and electricity has been cut across most affected areas.

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“The situation in Bener Meriah is very alarming. Communication is down, the power is out, and several areas are inaccessible. We are still trying to reach all disaster locations,” Ilham told state radio RRI on Thursday.

Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced
This aerial photo shows a mosque along the Medan-Banda Aceh main road submerged by floods in Peuribu Village, West Aceh, Aceh, on Thursday, November 27, 2025. (Antara Photo/Syifa Yulinnas)

Persistent Floods
Floodwaters in Medan and Deli Serdang remained high as of Thursday morning, with the Deli and Belawan rivers continuing to overflow, submerging residential areas under nearly three meters of water in some locations.

Combined rescue teams are still conducting large-scale evacuations, as many residents remain trapped inside their homes. Flooded roads have left hundreds of vehicles stalled, especially after motorists attempted to drive through high water.

Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced
Villagers stand on a bridge destroyed by a flash flood in Manyang Cut Village, Pidie Regency, Aceh, on Thursday, November 27, 2025. (Antara Photo/Ampelsa)

Emergency personnel from the Regional Disaster Mitigation Agency (BPBD), National Search and Rescue Agency, military, and police evacuated residents using inflatable boats in Medan Maimun, one of the worst-affected districts located along the Deli River.

In Sei Mati, about 300 families have already evacuated as water levels continue to rise. Children and elderly people are being prioritized for relocation to temporary shelters.

Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced
Rescue workers carry the body of a villager after a landslide in Agam, West Sumatra, on Thursday, November 27, 2025. (Antara Photo/Iggoy el Fitra)

Rescue operations are also underway in several other districts across Medan, while Deli Serdang’s Helvetia village in Sunggal faces similar conditions, with homes inundated by up to two meters of water, forcing residents to take shelter in nearby mosques.

Local resident Anto said his home began flooding at 8:00 a.m. with ankle-deep water, but levels rose to nearly two meters by late afternoon, destroying furniture.

Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced
Flood victims in Padang, West Sumatra, take shelter in a school building on Wednesday, November 26, 2025. (Antara Photo/Iggoy el Fitra)

“What we need most are food, clean water, and clothing. No assistance has arrived yet. We hope the government comes soon,” he said.

Floods also reached Jalan Kapten Sumarsono, where one meter of water caused hundreds of motorbikes to stall, forcing residents to push their vehicles to safety.

Floods and Landslides Kill 62 Across Sumatra; Thousands Displaced
This aerial photo shows residential areas submerged by floods in Padang, West Sumatra, on Tuesday, November 25, 2025. (Antara Photo/Iggoy el Fitra)

Residents in Medan and Deli Serdang are hoping the rain stops soon so the floodwaters can recede and they can return home. Local disaster agencies have not yet released official figures on the total number of displaced people, but thousands of houses are believed to be underwater and hundreds of families have evacuated.

Why Floods Keep Reoccurring in Sumatra

Flooding and landslides are seasonal disasters in Sumatra, and experts warn the situation has worsened in recent years due to a combination of natural and human-driven factors.

1. Intense Rainfall Driven by Monsoon and Climate Patterns
Sumatra lies directly along the equatorial monsoon track, making it highly vulnerable to prolonged heavy rainfall.

In recent years, La Niña cycles and Indian Ocean Dipole anomalies have intensified rainfall events.

2. Overflowing Rivers and Watersheds Under Pressure
The island is home to large river basins such as the Deli, Belawan, Batang Arau, and Musi.

When rain persists for several days, these watersheds quickly overflow, submerging low-lying settlements.

3. Deforestation and Land Conversion for Agriculture & Mining
Environmental groups have documented extensive clearance of upstream rainforest areas for:

  • Agriculture and plantations
  • Mining concessions
  • Industrial expansion

The loss of vegetation reduces the soil’s ability to absorb water, increasing runoff and mudslide risk.

4. Rapid Urbanization Without Adequate Drainage
Major cities such as Medan and Padang have expanded faster than drainage and waste-management infrastructure.

Blocked drainage channels and riverbanks narrowed by settlement construction make floodwaters rise rapidly.

5. Poor Riverbank Management and Sedimentation
Riverbeds in many areas have shallowed due to sediment buildup, decreasing water capacity.

Illegal dumping and construction close to riverbanks further reduce river flow.

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