Does anyone know where I can download free GIS data regarding 100 yr flood maps? If not that, then just maps?

Question

It needs to be free, fairly recent, and reliable. The GIS data would be preferencial, but existing maps would also work.

Answer 1

maps.usgs.gov/gis I think thats the type of pattern you want to use. Also maps are available from the US Census and the Bureau of Land Management. All three agencies use the .gov suffix