Layer: Floodplain (ID:47)

View In: Map Viewer

Name: Floodplain

Display Field: OBJECTID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: 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 Universal Transverse Mercator Coordinate System (ZONE 18N) and Lambert Conformal conic projection.F The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.The hardcopy FIRM and DFIRM and the accompanying FISs are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match the hardcopy map exactly. However the hardcopy flood maps and flood profiles are the authoritative documents for the NFIP. Acknowledgement of FEMA would be appreciated in products derived from these data.Last Updated: March 2015

Copyright Text: MD iMAP, MDE, MES

Min. Scale: 250000

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Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

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Object ID Field: OBJECTID

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Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 1/6/2025 3:56:46 AM

Schema Last Edit Date: 1/6/2025 3:56:46 AM

Data Last Edit Date: 11/13/2024 6:03:10 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat