Description

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The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA).

Dataset Attributes

  • OBJECTID
    Number
  • FLD_AR_ID
    Text
    {"value"=>"4578", "count"=>1} (), {"value"=>"3627", "count"=>1} (), {"value"=>"3614", "count"=>1} (), {"value"=>"3597", "count"=>1} (), {"value"=>"3582", "count"=>1} (), {"value"=>"3566", "count"=>1} (), {"value"=>"3553", "count"=>1} (), {"value"=>"3529", "count"=>1} (), {"value"=>"3515", "count"=>1} (), {"value"=>"3507", "count"=>1} ()
  • FLD_ZONE
    Text
    {"value"=>"0.2 PCT ANNUAL CHANCE FLOOD HAZARD", "count"=>67} (), {"value"=>"AE", "count"=>56} (), {"value"=>"X", "count"=>14} (), {"value"=>"A", "count"=>4} (), {"value"=>"AO", "count"=>1} (), {"value"=>"AH", "count"=>1} ()
  • FLOODWAY
    Text
    {"value"=>" ", "count"=>136} (), {"value"=>"FLOODWAY", "count"=>7} ()
  • SFHA_TF
    Text
    {"value"=>"F", "count"=>76} (), {"value"=>"T", "count"=>67} ()
  • STATIC_BFE
    Number
    -9999 to 592
  • V_DATUM
    Text
    {"value"=>" ", "count"=>135} (), {"value"=>"NAVD88", "count"=>8} ()
  • DEPTH
    Number
    -9999 to 2
  • LEN_UNIT
    Text
    {"value"=>" ", "count"=>134} (), {"value"=>"FEET", "count"=>9} ()
  • VELOCITY
    Number
    -9999 to 0
  • VEL_UNIT
    Text
    {"value"=>" ", "count"=>143} ()
  • AR_REVERT
    Text
    {"value"=>" ", "count"=>143} ()
  • BFE_REVERT
    Number
    0 to 0
  • DEP_REVERT
    Number
    0 to 0
  • SOURCE_CIT
    Text
    {"value"=>"FIS24", "count"=>87} (), {"value"=>"STUDY1", "count"=>49} (), {"value"=>"FIS23", "count"=>5} (), {"value"=>"FIS27", "count"=>1} (), {"value"=>"FIS20", "count"=>1} ()
  • HYDRO_ID
    Text
    {"value"=>" ", "count"=>143} ()
  • CST_MDL_ID
    Text
    {"value"=>" ", "count"=>143} ()
  • Shape
    Number
  • Shape.area
    Number
  • Shape.len
    Number

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