The World Bank said it was finalising with Guatemala an 85 million dollars loan to help it cope with the two disasters.
Guatemala City's response was hampered by a separate emergency: the eruption of a nearby volcano whose ash forced the closure of the capital's international airport since last week, when two people were also killed and three went missing.
Colom said the airport would reopen on Tuesday.
"First there was a rain of ash, and now it's water. It's one disaster after another," said one resident in the southern town of Palin, Julio Figueroa. (AFP Photo)