GIS Data Catalog

FEMA Floodways in King County

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Summary

This dataset provides the location of the regulatory floodways.

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

Description

A compilation of best available floodway boundaries.

A floodway is the channel of a stream plus any adjacent floodplain area that must be kept free of encroachment so that the 1 percent annual chance flood can be carried without substantial increases in flood heights.

Layer information

Layer Name	fema_floodway_area
Subject Category	Hydrography
Title	FEMA Floodways in King County
Feature Count	128
Feature Type	Polygon
Next Update	As needed
Spatial reference	EPSG:2926
Control ID	2857
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
FLOODWAY No Source Noted	Description Not Found 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_Leng No Source Noted	Description Not Found Domain Not Found
ORIG_FID No Source Noted	Description Not Found 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

License	Terms of use and copyright