Data included on this CD-ROM represents final Flood Insurance Rate Map (FIRM)
data that have been published as effective FIRM information.  The data
are the official and legal representation of the effective flood zones. 
 

Directory Structure:
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There are 2 versions of FEMA's DFIRM database:  the Standard and the Enhanced.
The Standard database information is stored under the /DFIRM_DB directory and 
if there are any Enhanced database tables, they would be stored in the /Enhanced_DB 
directory.  The three database file formats are found in the following sub-directories:
Files in Shapefile format (.shp/.shx/.dbf) are located at /ArcShape
Files in ESRI Interchange format (.e00) are located at /ArcExport
Files in MapInfo Interchange format (.mif/.mid) are located at /MapInfo.

The /Document directory stores the metadata and readme files.
The /Ortho_photos directory stores any applicable raster data that are shown on the 
DFIRM along with their world files.
The /RFIRM directory stores raster images of the DFIRM panels along with their world files.
The /FIS directory holds a copy of the FIS in PDF format, when applicable.


For users without access to appropriate GIS software, a data viewer from ESRI,
ArcExplorer 2.0, can be obtained for free at the following website.  This software is 
freely distributable and technical support is solely available from ESRI at 
www.esri.com.


Description of Files:
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User's note: This CD-ROM may not contain all files listed below. Only database 
files relevant to the individual study are included on the CD-ROM.
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s_bfe		 - Base flood elevation lines shown on the DFIRM
		
s_base_index	 - Index of raster base map images	

s_cbrs		 - Coastal Barrier Resources System areas

s_cst_tsct_ln	 - Coastal transect lines

s_firm_pan	 - DFIRM panel areas

s_fld_haz_ar	 - Flood hazard zone areas

s_fld_haz_ln	 - Flood hazard zone lines

s_gen_struct	 - Hydraulic structures shown on the DFIRM such as levees, weirs, bridges,
		   dams, culverts

s_label_ln	 - Leader lines for printed DFIRM labels

s_label_pt	 - Point location of printed DFIRM labels

s_perm_bmk	 - National Geodetic Survey (NGS) benchmark point locations

s_plss_ar	 - Public Land Survey System (PLSS) section areas

s_plss_ln	               - Public Land Survey System (PLSS) township, range, and section lines

s_pol_ar	               - Political jurisdiction areas

s_pol_ln	               - Political jurisdiction boundary lines

s_quad_index	 - Index of USGS 7.5 minute quadrangles

s_riv_mrk	               - River Mile marker point locations
            
s_trnsport_ln	 - Base map transportation line features

s_wtr_ar	               - Surface water area features

s_wtr_ln	               - Surface water line features

s_xs		 - Cross section line locations

study_info	 - General study information

l_comm_info	 - Tabular data representing all included communities

l_mt1_lomc	 - Tabular data representing Letters of Map Change (LOMCs)

l_pan_revis	 - Tabular data representing historic FIRM revisions

l_pol_fhbm	 - Tabular data representing FHBM revisions

l_stn_start	 - Tabular data representing cross section stationing origins