Online Flood Maps
Current Flood Maps (2-18-2005)
Historical Flood Maps & Flood Insurance Studies
The older the original flood maps are, the harder they are to read. We’ve digitized these older map sets and remastered them to be easier to read. However, these remastered versions are only approximate. When viewing buildings close to a flood boundary line, it’d be best to reference the original flood panel maps also listed below.
Accessing these old flood maps will become more necessary as the release of new flood maps nears. Early indicators are to expect these new flood maps during the summer of 2021; longer if the City opts to mount appeals.
If FEMA’s proposed maps do become effective, a number of buildings presently not required to maintain flood insurance - currently located within an "X" type flood zone - may need to obtain flood insurance for the first time, as those "X" zones are scheduled to shrink. Some 2,000 buildings presently in an "X" type flood zone will be remapped into "AE" type zones.
Structures after 1974
Property owners may need to demonstrate structures built after December 31, 1974 were constructed to the flood zones and minimum elevation requirements existing at the time. Using the City’s GIS website, and knowing the year of construction - check with the Monroe County Property Appraiser - buildings can be matched-up to the flood map in effect at the time (Use the most recent flood map dated prior to a permit for construction).
Major Map Changes
Major flood map changes occurred between the 1976, 1983, 1989 and 1997. Relatively minor changes occurred with the 1997 and 2005 maps. FEMA's proposed new flood maps are expected to be a major change.
Digitally Remastered Versions of Old Flood Maps:
The City has digitally remastered the old FEMA hard-to-read flood maps for easy viewing and made them available online.
Copies of the original FEMA paper maps are available below.
- 1997 Panel 1708 - Fleming Key, Trumbo Point, N Sunset Key and W Sigsbee (PDF)
- 1997 Panel 1709 - N Roosevelt Boulevard, New Town, Sigsbee, W Stock Island (PDF)
- 1997 Panel 1717 - S Roosevelt Boulevard, Mid-town, Airport (PDF)
- 1997 Panel 1728 - Stock Island (PDF)
- 1997 Panel 1736 - S Roosevelt Boulevard Along Cow Key Channel (PDF)
Flood Insurance Study (FIS)
Every community participating in the National Flood Insurance Program (NFIP) has an initial Flood Insurance Study that provides a detailed analysis of a community’s flood risks. This publication is usually only of interest to hydraulic engineers. They are listed below.
Flood Hazard Rate Map (FIRM)
Prior to the establishment of an official Flood Hazard Rate Map (FIRM), the NFIP issued a Flood Hazard Boundary Map (FHBM) on June 15, 1973. This early map didn’t have any identified flood zones nor Base Flood Elevation (BFE) levels within the City of Key West. (The flood zones and BFEs shown on this map are outside the city limits).
Under this map, the entire City was considered an "Approximate A Zone." As such, the minimum elevation standard was plus two-feet above grade. The first FIRM with identified flood zones and BFEs was issued about a year later on July 1, 1974, (reflected on revised maps dated October 29, 1976).