It is important to recognize that the DFIRMs are only as accurate as the available data.  In many areas, new development and storm impacts may have changed the physical environment such that the actual risks are no longer depicted on the flood maps.  The only way to ensure accurate up-to-date maps depicting true hazards, is to include better data.  If you have or know of a project which included the collection of:

• Digital topographic mapping,
• Digital terrain models,
• Digital orthophotos,
• Transportation data,
• Updated corporate boundaries,
• High water marks,
• Hydrologic and hydraulic data, and/or
• Design data for bridges, dams, stream channels and flood control measures

Contact the State Floodplain Management Program.  We may be able to use the information to update your local flood maps.