King County GIS Center
King Street Center
201 S. Jackson St.
Suite 706
Seattle, WA 98104

+ 47.59909 N
- 122.33136 W

+ 47°  35' 56.72"
- 122° 19' 52.90"


Letter of Map Change (LOMC)

Description | Contacts | Attribute Information | Constraints

Data layer thumbnail image


Layer name: RIVERSLOMC
Subject category: property
Title: Letter of Map Change (LOMC)
Feature Count: 0
Feature Type: Polygon
Abstract: LOMC includes Letter of Map Amendment (LOMA), Letter of Map Revision (LOMR) and Letter of Map Revision based on Fill (LOMR-F).
Purpose: 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.
Status: Complete
Updated: As needed
Time period of content: (single date,as YYYYMMDD):: 20170317
Time period of content: (date range, as YYYYMMDD):: -
Spatial reference: WA State Plane North
FGDC Documentation: Classic or FAQ
Open Data Availability: Yes
Place Keywords: Pacific NW, King County, WA, Washington state,
Theme Keywords: property,
Lineage: Available


Maintained by:
King County King County Dept of Natural Resources and Parks, Water and Lands Resource Division
Primary: Harkeerat Kang, GIS Analyst, 206-477-4414
(How to e-mail a County contact)
Secondary: KCGIS Center; This mailbox is monitored during business hours.

Attribute Information

_PIN_Unique parcel number
_CaseNumber_Unique case number assigned by FEMA for the LOMA or LOMR
_DeterminationDate_The determination date by FEMAUNREPRESENTED DOMAIN
_LOMCLetterType_The type of LOMC - LOMA (Letter of Map Ammendment) or LOMR (Letter of Map Revision)
_LOMCRemovalType_Type of LOMC removal by FEMA
Out as shown: Property
Out as shown: Structure
Portion of property
_LOMCFileName_The pdf file name with the letter details by FEMA
_LOMCPropertyInfo_ID_Unique ID from the RiversFacilityInventory (RFI)database managed by Rivers section
Range Min:490.0
Range Max:1243.0
_LOMC_ID_Letter of Map Change ID from the Rivers Facility Inventory database


Access: Access Constraint: Data is available on GIS Data Portal:

Use: Use Constraint: King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.