I am surprised that such a large area flooded that was not declared a flood zone. In my immediate area their are several watershed dams including my own of 36 acres. About two to three years after Katerina drive in access was severely limited due to erosion concerns.
The biggest change however was a large increase in declared flood areas. Everything was now based on absolute worse case senerio such as my dam structure having a 100% instant collapse. Now besides many places here can know longer rebuild a house for example if it has 50%+ damage from any reason. Other restrictions may also now apply. The watershed board said this was all due to the Katrina experience.
GliderJohn