Blog · October 14, 2026 · Washington
Aberdeen Flood Zone Map: checking a property's flood zone
The zone on FEMA's map affects insurance, building and resale near Ocean Shores.
Main page: Grays Harbor County, WA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Cosmopolis? A quick look at the Aberdeen flood zone map shows whether it sits in a FEMA flood zone, and the lookup is free. Covered here for Aberdeen: finding the address on FEMA's map, reading the zone codes, and pairing it with the Washington Current Parcels layer in ArcGIS Map Viewer.
Getting started with the Aberdeen flood zone map
The official source is FEMA's Flood Map Service Center: search an address around Elma, then open the map view for that panel. A tract near Cosmopolis without an address can still be found: zoom in from the nearest road and click the spot.
Pulling up a parcel
Go first to the Washington Current Parcels layer in ArcGIS Map Viewer; it includes each assessed parcel from Ocean Shores to Montesano. In and around Hoquiam, put in a street address, an owner's name or a parcel number, and the viewer zooms to the match. If you're looking near Hoquiam, a pop-up or side panel normally shows the owner of record, assessed acreage, the parcel number and in many cases the last transfer.
Sections, lots and bearings
Washington is laid out under the Public Land Survey System, so deeds around Cosmopolis reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though corrections make some sections near Westport odd-sized. Keep the legal description for land near Cosmopolis before you request a deed or survey.
Which office to call
Questions about value or the owner field for land near Montesano are handled by the County Assessor, which maintains the tax roll. Building or septic questions for a lot near Hoquiam go to planning, building or health offices, depending on whether the land is inside town limits.
Where Aberdeen fits in
Aberdeen lies within Grays Harbor County, Washington, which means parcel data comes from the county. On ground around Westport, city or town hall handles matters such as zoning, permits and utilities inside its limits, while the county keeps the tax map. Lots just outside the city limits near Westport often answers to county rules instead.
A word on accuracy
Listed acreage is an assessed number; only a licensed surveyor sets the real boundary for a parcel near Elma. With a lot near Hoquiam, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Low spots and local drainage
Creeks and ditches near Elma may not have detailed mapping, so ask neighbors about past flooding. Wet ground around Elma is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
Reading A, AE and X
Near Westport, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. In and around Hoquiam, a low-risk label isn't a guarantee: FEMA notes that many claims come from moderate- and low-risk areas.
Next door to Grays Harbor County
Grays Harbor County touches Jefferson County, Lewis County, Mason County, Pacific County, and Thurston County, all with their own assessor records. A tract near the line by Elma may show up across two assessors' files, so open the adjacent map before you assume the acreage. If the land is near Cosmopolis, our state page lists each bordering county map for Washington.
A short flood checklist
Ask the seller for any Elevation Certificate for the house near Elma; an insurance quote early avoids surprises.
Field tips
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Elma, but coverage can be spotty out of town. A printout of the tract near Ocean Shores is a good backup.
Lining it up with the parcel map
FEMA's map shows zones but not ownership, so check the Washington Current Parcels layer in ArcGIS Map Viewer too for the outline of the tract near Ocean Shores.
Lenders and permits
For acreage around Elma, ask for an Elevation Certificate: it records the building's elevation against the base flood. Remodeling a house in a zone near Montesano usually means extra permit review; call the permitting office early.
Getting your bearings
Montesano is the county seat, where most land records are kept. You'll also find Cosmopolis, Hoquiam, and Westport, each with its own cluster of lots. About 77,290 people live in Grays Harbor County (Census estimate, 2023) spread over some 1,901 square miles. Grays Harbor County was formed in 1854, which matters when you trace an old farm's title. Places such as Colonel Bob Wilderness help you orient on the aerial around Elma.
Frequently asked
How often are flood maps updated for land near Hoquiam?
Good question; a new study can move a zone line near Westport; check the effective date on the panel.
How do I check the flood zone for an address in Aberdeen?
Search the address near Ocean Shores on FEMA's Flood Map Service Center, and the zone code appears on the map.
What does Zone AE mean near Montesano?
For most people, an AE zone has a 1% annual chance of flooding and a base flood elevation, so builders near Elma design to that elevation.
Do I need to worry about flooding in Zone X in Aberdeen?
In most cases, Zone X near Hoquiam means moderate (shaded) or minimal (unshaded) mapped risk; FEMA notes that a large share of claims come from these areas.
What's a legal description near Elma?
On ground around Westport, deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Grays Harbor County, WA parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.