Nepal: 5 missing, 95 rescued in Gorkha after flash flood destroys homes, bridges | What we know

A flash flood struck parts of Gorkha district on Sunday, sending water and debris through downstream settlements. Homes, bridges and hydropower projects were damaged. Rescue teams reached affected communities by helicopter and on foot, while authorities continued searching for five missing people.

The suspected chain of events began with a landslide between Lokpa and Chhumling. The landslide blocked the Budhi Gandaki River and formed a temporary natural dam. When that barrier gave way, a sudden surge carried water, mud and debris downstream. The force destroyed or damaged structures and cut transport links.

By Sunday evening, the Nepali Army said 95 people had been rescued from Chumnubri Rural Municipality. Thirteen additional people were rescued from flood-hit areas, according to the report. Security forces, including 171 Nepal Army soldiers, remained involved in evacuation, search and relief operations while the missing were still being sought.

A flash flood is a sudden rush of water across land or through a river channel. It can develop within minutes or hours after heavy rain, a landslide, a burst dam or another sudden release. Its speed and force make it especially dangerous because people may have very little time to evacuate.

An ordinary flood often builds more slowly as rivers rise or water accumulates over a wider area. It can still cause major damage, but the longer warning period may allow residents to move belongings, leave threatened places and close roads. In Gorkha, the flood followed the sudden failure of a landslide-made barrier.

The article reports that water and debris surged downstream after the Budhi Gandaki River was blocked. The release inundated settlements and swept away or damaged bridges, houses and hydropower projects. That rapid change helps explain why rescue and evacuation required helicopters and ground teams.

The disaster affected people, homes and essential infrastructure across Chumnubri Rural Municipality. By Sunday evening, the Nepali Army said 95 people had been rescued using helicopters and ground teams. The report separately said 13 more people were rescued from flood-hit areas as operations continued.

The housing damage was substantial. The NDRRMA reported that 45 houses were completely destroyed and another 27 sustained partial damage. Infrastructure losses included two damaged suspension bridges, two damaged motorable bridges and three damaged hydropower projects. Several other bridges were also reported damaged or swept away.

The figures show that the disaster was more than a short-lived flood emergency. It disrupted homes, transport routes, electricity infrastructure and access between settlements. Four helicopters, including an MI-17, supported rescue work, while hundreds of security personnel helped evacuate residents and deliver relief in difficult mountain terrain.

A landslide can move enough soil, rock and debris into a river channel to block its normal flow. The blocked water then collects behind the debris, creating a temporary natural dam. This process can turn a flowing river into a rapidly expanding, unstable reservoir.

The article places the landslide between Lokpa and Chhumling in north-central Gorkha. It says the debris blocked the Budhi Gandaki River and formed a barrier. The barrier subsequently gave way, although the report does not identify a more specific reason for its failure. Once it broke, stored water rushed downstream with mud and debris.

That sudden release produced the flash flood that damaged settlements and infrastructure. The flood swept away or damaged bridges and homes and affected three hydropower projects. Because the blockage formed naturally, the timing and size of the release were difficult to control, increasing the danger for communities below the landslide.

When the natural dam failed, water that had built up behind the landslide barrier moved rapidly downstream. It carried debris and mud into areas below the blockage. The sudden surge inundated settlements and created dangerous conditions for residents, rescuers and people stranded by the flood.

The article reports extensive damage across the affected region. Forty-five houses were completely destroyed, while 27 others suffered partial damage. Two suspension bridges, two motorable bridges and three hydropower projects were damaged. Other named crossings, including bridges near Arughat, Nyakchetat, Sirdibas, Machhikhola, Kerauja and Sotima, were damaged or swept away.

The destruction isolated communities and disrupted transport across mountainous terrain. Three people stranded at Dhaulibhir near the Ungilung River had to be airlifted by an army helicopter. Rescue teams therefore had to combine helicopters with ground operations to reach people and support evacuation and relief work.

Mountain communities are especially exposed because settlements often lie along narrow river valleys and depend on bridges, roads and river crossings for access. A single damaged connection can interrupt travel, supplies, medical help and evacuation. Steep terrain can also make reaching affected areas difficult for rescue teams.

The Gorkha flooding shows this vulnerability clearly. Several bridges were destroyed, damaged or swept away, including crossings linking Arughat with Dhading and Nyakchetat with Sirdibas. The Machhikhola-Kerauja footbridge and an iron-and-concrete bridge at Sotima were also affected. These losses disrupted transport between settlements.

The article reports that helicopters and ground teams were needed to reach residents. Three people near the Ungilung River were airlifted after becoming stranded. The damage also renewed concerns about communities living along Himalayan river systems, where future floods and landslides could again cut access and delay assistance.

Helicopters are valuable when floods destroy roads and bridges because they can quickly reach isolated settlements and evacuate people. Ground teams can search homes, move residents to safety and deliver relief where routes remain open. Together, these methods reduce the time people spend trapped in dangerous areas.

In Gorkha, the Nepali Army used four helicopters, including an MI-17, alongside ground teams. It rescued 95 people from settlements in Chumnubri Rural Municipality. An army helicopter also airlifted three people stranded at Dhaulibhir near the Ungilung River. Security personnel supported evacuation, rescue and relief operations.

Early warnings can help communities leave before a blocked river or rising water reaches them. Stronger bridges, roads and other infrastructure can better withstand floods or keep alternate routes open. These measures could reduce deaths and isolation, although the article does not report specific warning systems or reconstruction plans for Gorkha.