Kathmandu, Sept. 2 -- The floods and mudflows that swept through Nepal's Bhotekoshi-Trishuli river system last week left an estimated 2.2 million tonnes of debris across the areas analysed, according to a preliminary assessment by the United Nations Development Programme (UNDP).

The UNDP's Rapid Assessment and Analysis for Immediate Recovery and Development Action (RAPIDA) assessment found that the debris comprises collapsed building materials, household belongings, vegetation, rocks and sediment.

The flash flood, reportedly triggered by a glacial collapse on 26 August, swept water, mud and rocks through communities in the affected districts. Nepal has reported over 1,110 dead, with over 4,000 people reported missing.

Of the estimated ...