Description

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The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "... requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards," Section 2 (b) (4) of the Flood Disaster Protection Act of 1973. In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood coverage offered through the NFIP. The DFIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The DFIRM database is a subset of the Digital FIS database that serves to archive the information collected during the FIS. <Metadata>

Dataset Attributes

  • OBJECTID
    Number
  • FLD_AR_ID
    Text
    {"value"=>"110001_1154", "count"=>3} (), {"value"=>"110001_859", "count"=>3} (), {"value"=>"110001_1344", "count"=>1} (), {"value"=>"110001_1343", "count"=>1} (), {"value"=>"110001_1342", "count"=>1} (), {"value"=>"110001_1341", "count"=>1} (), {"value"=>"110001_1340", "count"=>1} (), {"value"=>"110001_1339", "count"=>1} (), {"value"=>"110001_1338", "count"=>1} (), {"value"=>"110001_1337", "count"=>1} ()
  • FLD_ZONE
    Text
    {"value"=>"0.2 PCT ANNUAL CHANCE FLOOD HAZARD", "count"=>206} (), {"value"=>"X", "count"=>137} (), {"value"=>"AE", "count"=>30} (), {"value"=>"A", "count"=>12} ()
  • FLOODWAY
    Text
    {"value"=>"FLOODWAY", "count"=>6} ()
  • SFHA_TF
    Text
    {"value"=>"F", "count"=>343} (), {"value"=>"T", "count"=>42} ()
  • STATIC_BFE
    Number
    -9999 to 11.4
  • V_DATUM
    Text
    {"value"=>"NAVD88", "count"=>4} ()
  • DEPTH
    Number
    -9999 to -9999
  • LEN_UNIT
    Text
    {"value"=>"Feet", "count"=>4} ()
  • VELOCITY
    Number
    -9999 to -9999
  • VEL_UNIT
    Text
  • AR_REVERT
    Text
  • BFE_REVERT
    Number
    -9999 to -9999
  • DEP_REVERT
    Number
    -9999 to -9999
  • SOURCE_CIT
    Text
    {"value"=>"110001_STUDY1", "count"=>278} (), {"value"=>"110001_LOMC4", "count"=>104} (), {"value"=>"110001_LOMC2", "count"=>2} (), {"value"=>"110001_LOMC3", "count"=>1} ()
  • HYDRO_ID
    Text
  • CST_MDL_ID
    Text
  • ZONE
    Text
    {"value"=>"X500", "count"=>206} (), {"value"=>"X", "count"=>137} (), {"value"=>"AE", "count"=>30} (), {"value"=>"A", "count"=>12} ()
  • Shape
    Number
  • SHAPE_Length
    Number
  • SHAPE_Area
    Number
  • DFIRM_ID
    Text
    {"value"=>"110001", "count"=>385} ()
  • VERSION_ID
    Text
    {"value"=>"1.1.1.0", "count"=>384} (), {"value"=>"2.1.3.0", "count"=>1} ()
  • ZONE_SUBTY
    Text
    {"value"=>"0.2 PCT ANNUAL CHANCE FLOOD HAZARD", "count"=>206} (), {"value"=>"AREA OF MINIMAL FLOOD HAZARD", "count"=>86} (), {"value"=>"AREA WITH REDUCED FLOOD RISK DUE TO LEVEE", "count"=>51} (), {"value"=>"FLOODWAY", "count"=>6} ()
  • AR_SUBTRV
    Text
  • STUDY_TYP
    Text
    {"value"=>"NP", "count"=>385} ()
  • DUAL_ZONE
    Text

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