GIS Data Catalog

Letter of Map Change (LOMC)

Learn how to use GIS Open Data 🗺

Use this Data

Links How to use in ArcGIS Pro
Sharing Status	Public

Summary

Letter of Map Change (LOMC) is a general term used by FEMA that relates to floodplain management where several revisions and amendments are made to FEMA maps by letter.

Description

LOMC includes Letter of Map Amendment (LOMA), Letter of Map Revision (LOMR) and Letter of Map Revision based on Fill (LOMR-F).

Layer information

Layer Name	riverslomc_area
Subject Category	Property
Title	Letter of Map Change (LOMC)
Feature Count	938
Feature Type	Polygon
Next Update	As needed
Spatial reference	EPSG:2926
Control ID	2546
Place Keywords	Pacific NW, King County, WA, Washington State
Theme Keywords	Property
Supplemental Information	None

Table Preview

Attribute information

OBJECTID From Esri	Description Internal feature number. Domain Sequential unique whole numbers that are automatically generated.
PIN From King County	Description Unique parcel number Domain Not Found
CaseNumber From King County	Description Unique case number assigned by FEMA for the LOMA or LOMR Domain Not Found
DeterminationDate From King County	Description The determination date by FEMA Domain UNREPRESENTED DOMAIN
LOMCLetterType From King County	Description The type of LOMC - LOMA (Letter of Map Ammendment) or LOMR (Letter of Map Revision) Domain LOMA, LOMR
LOMCRemovalType From King County	Description Type of LOMC removal by FEMA Domain Non-removal, Out as shown: Property, Out as shown: Structure, Portion of property, Property, Revalidation, Structure
LOMCFileName From King County	Description The pdf file name with the letter details by FEMA Domain Not Found
LOMCPropertyInfo_ID From King County	Description Unique ID from the RiversFacilityInventory (RFI)database managed by Rivers section Domain 490.0 to 1243.0 by
Shape From Esri	Description Feature geometry. Domain Coordinates defining the features.
LOMC_ID From King County	Description Letter of Map Change ID from the Rivers Facility Inventory database Domain Not Found
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