I’ll share with you what I know about the National Flood Insurance Program (NFIP) and rebuilding in mapped floodplains.
Take for example, my Dads’ home in New Orleans. Prior to Hurricane Katrina, the Flood Insurance Map (FIRM) showed it to be in a zone A4. This means a 100-yr flood zone, approximate flood depth 4 feet. Sure enough, the home was flooded to about 4 feet.
The Stafford Act, which brought into being the whole idea of FIRM’s, was enacted by Congress in the late Sixties. Existing homes which were in the mapped floodplain were “grandfathered” in … that is to say, those folks could buy flood insurance at the same rate as anyone else; penalties (in the form of increased premiums) for their finished floors being below the Base Flood Elevation (BFE) were waived.
Several floods and several tons of money later, the NFIP took a new approach. According to the newer legislation, one can rebuild to the same finished floor elevation as that of the old house provided that the expenses for rebuilding are less than 50% of the value of the home.
That means that homes (like my Dad’s) which were “substantially damaged” (greater than 50% of value to rebuild) MUST be elevated above the BFE. Simply put, for Dad to rebuild according to NFIP guidelines, he must elevate his finished floor above 4 feet.
So, you may say to yourself, what happens if a homeowner can’t or won’t abide by the ordinance? The building department is supposed to enforce the Flood Damage Prevention ordinance. Any community which participates in the NFIP has to adopt the ordinance. If you bring a permit application to the community, it is bound by its own ordinance to refuse granting a permit if your construction is below the BFE. If the City of New Orleans means to uphold its ordinance, that means that a lot of lower income people will not be able to rebuild, because rebuilding to a higher elevation is too costly. Also, if the City refuses to uphold the ordinance, the NFIP might yank each and every flood policy in the City.
The rumor I’ve heard in the floodplain management industry is that New Orleans is refusing to uphold its own ordinance. The repercussions of that could be quite broad, in terms of seeing thousands of homeowners in the New Orleans area unable to purchace flood insurance because NFIP is going to pull the plug. I’ve also heard of one Mississippi gulf community which has refused to adopt the newer BFE’s which came out post-Katrina.
In terms of real life, we are caught in quite a quandary. The NFIP is a good program, and the ordinances can provide for safety from flooding as far as elevation standpoint. The question is, should we be preventing Granny from rebuilding on her slab which may be several feet below the BFE? Is that helping Granny or hurting her? Should dwellings be built in the floodplain in the first place? If a community decides to raze all damaged houses, what is to be done with the displaced people?
A couple of good links:
http://www.fema.gov/mitigationss/briefRotate.do
http://www.fema.gov/mitigationss/bestPracticeDetail.do?mitssId=1825