Poor families are in need of food and basic necessities. According to Prem the Red Cross is working in the area but he hasn't seen other NGOs or organizations like the World Food Program kick into gear yet.
I encourage you to consider donating to the Red Cross. You can also read more about the situation here:
http://www.phnompenhpost.com/index.php/2011092951875/National-news/flooded-kingdom.html
http://www.phnompenhpost.com/index.php/2011092951875/National-news/flooded-kingdom.html