Thousands are feared dead in the city of New Orleans alone and over $25bn dollars of damage may have been caused.
The US government has urged people to contribute generously to aid agencies assisting with the relief effort.
Volunteer agencies provide a wide variety of services after disasters, such as shelter, food, housing repair, crisis counselling and childcare.
You can donate to any of these organisations via their websites at the links below.
Most Popular Now | 28,843 people are reading stories on the site right now.";