Floodplains/NFHL_Layers (MapServer)

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Service Description: The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National Flood Insurance Program. You can use the information to better understand your level of flood risk and type of flooding.

The NFHL is made from effective flood maps and Letters of Map Change (LOMC) delivered to communities. NFHL digital data covers over 90 percent of the U.S. population.

The FEMA FIRM Database will store the digital GIS data used in the map production process, as well as tabular information inside the Flood Insurance Study (FIS) report. The Database will provide a standard, systematic method for FEMA to distribute comprehensive details of flood hazard identification studies to the public and others in a digital format.

Updated 20250502

Map Name: Map

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers:

FIRM Panels (1)
Political Jurisdictions (2)
LOMRs (3)
NFHL Cross Sections (4)
- Cross Sections (5)
- Base Flood Elevations (6)
NFHL Baselines (7)
- Profile Baselines (8)
- Transect Baselines (9)
NFHL Hydraulic Structures (10)
- Levees (11)
- General Structures (12)
NFHL Coastal (13)
- Coastal Transects (14)
- Limit of Moderate Wave Action (15)
- Coastal Gages (16)
NFHL Water Layers (17)
- Water Lines (18)
- Water Areas (19)
NFHL Gages and Markers (20)
- Gages (21)
- High Water Marks (22)
- River Mile Markers (23)
- Station Start Points (24)
NFHL Flood Hazard Areas (25)
- Flood Hazard Boundaries (26)
- Flood Hazard Area (27)
NFHL Hydrologic (28)
- Nodes (29)
- Hydrologic Reaches (30)
- Subbasins (31)
NFHL Model Metadata (32)
- Datum Conversion Points (33)
- Submittal Info (34)
- Base Index (35)

Description:

Service Item Id: eda1cac5c4174a4b8832ad46def0b5d9

Copyright Text: Federal Emergency Management Agency

Spatial Reference: 4269 (4269)

Single Fused Map Cache: false

Initial Extent:

Full Extent:

Units: esriDecimalDegrees

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Supports Dynamic Layers: true

Resampling: false

MaxRecordCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true

Child Resources: Info Dynamic Layer

Supported Operations: Export Map Identify QueryLegends QueryDomains Find Return Updates