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Service Description: Effective Date Jan 29, 2021
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). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12000.
Map Name: Layers
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Layers:
Description:
Copyright Text: FEMA, Vanderburgh County Building Commission
Spatial Reference:
102100
(3857)
Single Fused Map Cache: true
Tile Info:
- Height: 256
- Width: 256
- DPI: 96
-
Levels of Detail: 10
- Format: PNG8
- Compression Quality: 0.0
- Origin: X: -1.54952E7
Y: 2.00127E7
- Spatial Reference: 102100
(3857)
Initial Extent:
XMin: -9766449.17626506
YMin: 4573272.242928118
XMax: -9735334.114034936
YMax: 4583511.638406909
Spatial Reference: 102100
Full Extent:
XMin: -9768285.2992
YMin: 4544169.140100002
XMax: -9733497.9913
YMax: 4605947.227899998
Spatial Reference: 102100
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title:
Author:
Comments: Effective Date Jan 29, 2021
Flood hazard areas identified on the Flood Insurance Rate Map are identified as a Special Flood Hazard Area (SFHA). SFHA are defined as the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year. The 1-percent annual chance flood is also referred to as the base flood or 100-year flood. SFHAs are labeled as Zone A, Zone AO, Zone AH, Zones A1-A30, Zone AE, Zone A99, Zone AR, Zone AR/AE, Zone AR/AO, Zone AR/A1-A30, Zone AR/A, Zone V, Zone VE, and Zones V1-V30. Moderate flood hazard areas, labeled Zone B or Zone X (shaded) are also shown on the FIRM, and are the areas between the limits of the base flood and the 0.2-percent-annual-chance (or 500-year) flood. The areas of minimal flood hazard, which are the areas outside the SFHA and higher than the elevation of the 0.2-percent-annual-chance flood, are labeled Zone C or Zone X (unshaded).
The S_FIRM_Pan table contains information about the FIRM panel area. A spatial file with location information also corresponds with this data table. The spatial entities representing FIRM panels are polygons. The polygon for the FIRM panel corresponds to the panel neatlines. Panel boundaries are generally derived from USGS DOQQ boundaries. As a result, the panels are generally rectangular. In situations where a portion of a panel lies outside the jurisdiction being mapped, the user must refer to the S_Pol_Ar table to determine the portion of the panel area where the FIRM Database shows the effective flood hazard data for the mapped jurisdiction. This information is needed for the FIRM Panel Index and the following tables in the FIS report: Listing of NFIP Jurisdictions, Levees, Incorporated Letters of Map Change, and Coastal Barrier Resources System Information. The spatial entities representing FIRM panels are polygons. The polygon for the FIRM panel corresponds to the panel neatlines. Panel boundaries are generally derived from USGS DOQQ boundaries. As a result, the panels are generally rectangular. FIRM panels must not overlap or have gaps within a study. In situations where a portion of a panel lies outside the jurisdiction being mapped, the user must refer to the S_Pol_Ar table to determine the portion of the panel area where the FIRM Database shows the effective flood hazard data for the mapped jurisdiction. This information is needed for the FIRM Panel Index and the following tables in the FIS report: Listing of NFIP Jurisdictions, Levees, Incorporated Letters of Map Change, and Coastal Barrier Resources System Information.
Subject: Flood hazard areas identified on the Flood Insurance Rate Map are identified as a Special Flood Hazard Area (SFHA)
Category:
Keywords: SFHA,REGION 05,DFIRM,COUNTY-FIPS 163,COMMUNITY VANDERBURGH COUNTY AND INCORPORATED AREAS,FEMA Flood Hazard Zone,STATE IN,Inland Waters,Digital Flood Insurance Rate Map,NFIP,FIRM,Structure,Special Flood Hazard Area,Riverine Flooding,Flood Insurance Rate Map,Floodway,Base Flood Elevation,Elevation,Hydrology,DFIRM Database,COUNTY VANDERBURGH,Transportation,Environment,FEMA-CID 18163C
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: false
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON
Supports Query Data Elements:
Min Scale: 72223.819286
Max Scale: 564.248588
Supports Datum Transformation: true
Child Resources:
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Supported Operations:
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