A new flooding threat looms over Nepal as thousands of rescuers race against time to find those still missing, six days after a glacial collapse unleashed deadly devastation along the border with Tibet. The combined deaths from the catastrophic floods in Nepal and Tibet crossed 800, with more than 3,000 people still missing, according to the latest data. Flood warning notices have again been issued after Chinese authorities informed their Nepalese counterparts of increased water flow upstream. Authorities in Kathmandu said water levels are dangerously rising in the Bhotekoshi River, and worsening weather threatens to trigger another flash flood, as rescue crews worked to clear roads connecting Kathmandu to flood-affected areas.