A third of the 210 million dollars targeted has been raised but Bangladesh's worst floods in years are in danger of being overshadowed by the Darfur crisis and the grenade attack here which killed 20 people this month, it warned.

"Please do not forget Bangladesh and don't get distracted by other incidents in Bangladesh -- relief and rehabilitation are continuing despite the situation and those hardest hit by the floods, particularly the poor, are still now in grave need of help," said UN resident representative Jorgen Lissner.

He described the present situation in flood-affected areas as a "quiet disaster" and worried donors no longer saw the need for aid because the dramatic television images had stopped.

"The post-flood situation is extremely dangerous for the very poor because they have no income, no shelter, no assets and are vulnerable to disease," Lissner said.

About 69 million dollars has been received and some rehabilitation programmes have started, including food assistance and water and sanitation assistance, since the UN's August 12 appeal to help victims facing shortages of food and other essentials.

But Lissner said donors' focus had shifted amid the Darfur crisis in Sudan and Bangladesh's changing political situation after the August 21 blast targetting the main opposition leader.

He said a United Nations meeting in Geneva on Tuesday would review the status of the appeal for aid. The floods affected 33 million people at their height and left thousands stranded for weeks.