There are a few tools you can use to obtain Flood Zone data.   Here is a link to the National Flood Insurance Program: http://gis.hawaiinfip.org/fhat/ (this is likely the go-to resource)   We have also placed a link out to the FHAT website directly on the listing form for your convenience. A new window will open to the FHAT site.                 REsearch’s maps include a Flood Zone layer in order to obtain flood zone information:     The TMK Full / DPP section also includes Flood Zone information for Oahu properties: