From Network for Good:
Heavy monsoon rains have caused massive flooding in Pakistan, killing many people and challenging relief efforts in remote areas stranded by washed out roads and bridges. Reports estimate that nearly 14 million people have been affected by the disaster - more than the combined total of the 2004 Indian Ocean tsunami, the 2005 Kashmir earthquake and the 2010 Haiti earthquake, according to the United Nations. Critical supplies, especially clean water, are in demand.
Donations are needed to help provide emergency relief to those currently in desperate need.
Network for Good has an extensive list of charities and NGOs now providing care and relief and reconstruction in Pakistan.