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<br />Guide For Approximate Zone A Areas <br /> <br />DIP Background <br /> <br /> <br />,~ <br /> <br />~ <br />= <br />~ <br /> <br />.- <br />I~ <br />m <br />. <br /> <br />Ii <br />~! <br /> <br />Figure 1 - Flood Hazard Boundary Map <br /> <br />Federal programs, or by Federally supervised, regulated, or <br />insured agencies or institutions, in the acquisition or <br />improvement of land or facilities located, or to be located, <br />in special flood hazard areas. This act also severely limited <br />Federal financial assistance in the flood hazard areas of <br />communities which did not join the NFIP. <br /> <br />The initial Flood Hazard Boundary Maps for communities <br />identified as having flood hazards were prepared using <br />available floodplain data contained in reports developed by a <br />variety of Federal, state, and local sources. For those <br />communities that had no available flood information, <br />approximate hydrologic and hydraulic methods or historical <br />flood data were used to determine the extent of the special <br />flood hazard areas. <br /> <br />Flood Insurance Studies that used detailed hydrologic and <br />hydraulic analyses to develop BFEs and designate floodways and <br />risk zones were subsequently developed for most NFIP <br />communities. The results of a Flood Insurance study were <br /> <br />II-2 <br />