The foreign ministry's spokesman, Lok Bahadur Chhetri, told reporters on Friday that US$57.67 million ($80.43 million) is needed for short-term reconstruction and recovery over the next six months, while approximately US$4.71 billion ($6.57 billion) is required for long-term reconstruction adapting to a rapidly changing mountain environment.
"Given the scale and extent of the damage, the government is also undertaking a comprehensive post-disaster needs assessment to determine the full extent of loss and damage and the requirement for recovery, rebuilding and reconstruction," Mr Chhetri said.
The devastation began on August 26 when a glacier collapse near the Nepal-Tibet border unleashed a torrent of water, mud and debris that submerged parts of the country. At least 12 hydropower projects have been engulfed in mud and debris, and whole villages have been wiped off the map. Cross-border trade routes, roads, bridges, houses and other infrastructure were swept away.
Rescuers in Nepal have retrieved 1,385 bodies, while around 5,130 people remain missing, the country's disaster agency said on Friday. In Tibet, Chinese state media reported 43 dead and 519 missing. The combined toll includes around 800 foreigners, among them tourists and pilgrims.
Eight Australians who were originally declared missing have been found, with 35 still unaccounted for, according to the ABC.
A preliminary United Nations assessment estimated building damage from Nepal's floods at US$158 million ($220 million) alone, warning that total losses — including damage to roads and bridges, agricultural land and humanitarian costs — would be far higher.
Nepal's leaders are asking wealthier countries and global agencies for financial help, arguing the reconstruction costs show how climate change hits poor countries which do little to cause it. The government is finalising a report detailing the extent of the damage, losses and funding requirements for temporary shelters, schools and essential infrastructure.
Prime Minister Balendra Shah has said Nepal must "strongly raise" the issue with the international community.