Name: MS_DFIRMFloodHazard_2023

Display Field: DFIRM_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM 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 FIRM Database is derived from Flood Insurance Studies (FISs), previously published 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 FEMA. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Datum of 1983. *** In April, 2024, MARIS staff downloaded the September 30, 2023 release of the DFIRM data for Mississippi in geodatabase format. They then extracted the S_Fld_Haz_AR feature class to a shapefile. This shapefile was projected from Lat/Long into MSTM to form the above named shapefile for distribution. ****

Service Item Id: d986aabf554c40f49b374a9d0bc3c25d

Copyright Text: FEMA, MARIS

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

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Max Scale: 0

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Supports Statistics: false

Has Labels: true

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

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YMin: 1039766.7765735108
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YMax: 1577862.0637936671
Spatial Reference: 102609  (3814)

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Type ID Field: null

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• Shape ( type: esriFieldTypeGeometry, alias: Shape )
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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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