From the Union of concerned Scientists: New FEMA Study Wisely Details Ways to Make Flood Insurance Affordable. Here is the direct link to the 111-page report titled An Affordability Framework for the NFIP.

The Federal Emergency Management Agency (FEMA) released a report today detailing how Congress can modify the National Flood Insurance Program (NFIP) making insurance more affordable for low-income households and limiting their future risk. Some of the possible policy options include: sharing premium costs with FEMA, assisting those already spending significantly on other housing expenses, and providing grants or loans for mitigation actions that reduce flood risk.