GIS Data Catalog

FEMA 500 Year Floodplain in King County

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Summary


Provides the location of the pending FEMA 500-year floodplain (areas of 0.2% annual chance flood) plus areas with reduced risk due to levee.

This information is intended for informational purposes only, and should not be used for parcel level determinations.

Description


Provides the location of the FEMA 500-year floodplain (areas of 0.02% annual chance flood) plus areas wiht reduced risk due to levee.


Layer information

Layer Name fema_floodplain_500yr_area
Subject Category Hydrography
Title FEMA 500 Year Floodplain in King County
Feature Count 2287
Feature Type Polygon
Next Update As needed
Spatial reference EPSG:2926
Control ID 2856
Place Keywords None
Theme Keywords Floodplain, Flood, FEMA, Hydro, Rivers, Environment, Hazard, Environment
Supplemental Information None

Table Preview


Attribute information

OBJECTID

From Esri

Description

Internal feature number.

Domain

Sequential unique whole numbers that are automatically generated.

FLD_AR_ID

From FEMA

Description

Primary key for table lookup. Assigned by table creator.

Domain

Not Found

FLD_ZONE

From FEMA

Description

Flood Zone. This is a flood zone designation. These zones are used by FEMA to designate the SFHAs and for insurance rating purposes. Acceptable values for this field are listed in the D_Zone table.

Domain

Not Found

SFHA_TF

From FEMA

Description

Special Flood Hazard Area. If the area is within a SFHA this field would be true. This field will be true for any area coded as an A or V flood zone area. It should be false for any X or D flood areas. Acceptable values for this field are listed in the D_TrueFalse table.

Domain

Not Found

SOURCE_CIT

From FEMA

Description

Source Citation. Abbreviation used in the metadata file when describing the source information for the feature. The abbreviation must match a value in L_Source_Cit.

Domain

Not Found

Shape

From Esri

Description

Feature geometry.

Domain

Coordinates defining the features.

Shape.STArea()

From SQL Server

Description

Returns the area of a geometry instance in square units, based on the spatial reference identifier (SRID) of the geometry.

Domain

Double

Shape.STLength()

From SQL Server

Description

Returns the total length of the elements in a geometry instance.

Domain

Double


Contact information

Maintained by DNRP - Water and Land Resources
Primary Harkeerat Kang

Harkeerat.Kang@kingcounty.gov


Terms of Use

Summary


Provides the location of the pending FEMA 500-year floodplain (areas of 0.2% annual chance flood) plus areas with reduced risk due to levee.

This information is intended for informational purposes only, and should not be used for parcel level determinations.

Description


Provides the location of the FEMA 500-year floodplain (areas of 0.02% annual chance flood) plus areas wiht reduced risk due to levee.


Contact information

Maintained by DNRP - Water and Land Resources
Primary Harkeerat Kang

Harkeerat.Kang@kingcounty.gov


Terms of use and copyright


Change history

5/15/2020

Based on data received from FEMA May 2020.