Blog · October 14, 2026 · Washington
Okanogan County Flood Zone Map, Washington
Look up any Okanogan County address on FEMA's flood map, read the zone, and match it to the parcel record for land around Pateros.
Main page: Okanogan County, WA GIS & Parcel Viewer (official map link, Okanogan County facts and neighboring maps).
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Is that lot in Conconully in a flood zone? The Okanogan County flood zone map answer comes from FEMA, and it's free to look up. Here's how to read FEMA's map for an Okanogan County, WA property and match it to the parcel record.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Conconully, and short answers to common questions.
How to use the Okanogan County flood zone map
FEMA's official flood maps for Okanogan County are free at the FEMA Flood Map Service Center. Download the FIRM panel FEMA lists as effective for that part of Okanogan County. For an interactive view of the county, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery; zoom to the tract around Conconully and click. Switch to the Washington Current Parcels layer in ArcGIS Map Viewer and locate the same tract around Conconully. If the Okanogan County viewer has a floodplain layer, treat it as a convenience copy and confirm on FEMA's map.
Finding the tract on the Okanogan County map
There's no separate Okanogan County parcel site to hunt for; the Washington Current Parcels layer in ArcGIS Map Viewer carries the county's parcels along with the rest of Washington. Click any Okanogan County parcel near Pateros to open its record: owner, parcel ID and assessed acreage are typically listed. Our Okanogan County, WA page keeps the official link and the maps next door to Omak in one place.
Reading the zones on an Okanogan County flood map
Any Okanogan County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, meaning FEMA estimates a 1-percent annual chance of flooding. Where an Okanogan County tract shows Zone AE, there's a base flood elevation to compare a building against; in Zone A there isn't one. Shaded Zone X around Omak is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded X (or C) on the Okanogan County panel means minimal risk.
Low ground and small streams around Omak
Small streams and ditches near Omak may not be studied in detail, which is why it's worth walking the ground after a heavy rain.
Near the Okanogan County line
A farm near the county line can carry separate records in Chelan County, Douglas County, and Ferry County as well. Our Washington page links each map neighboring Okanogan County.
When the map affects a deal
Insurance is the practical stake for an Okanogan County buyer. When a structure near Conconully sits in a Special Flood Hazard Area and is financed by a regulated or federally insured lender, the lender must require flood coverage; that applies where the local government around Conconully is in the National Flood Insurance Program. For an Okanogan County home in shaded or unshaded X, insurance is a choice, not a mandate, although a lender in Washington can still ask for it. Where a structure near Omak looks higher than the shading suggests, FEMA's LOMA process allows a review, typically backed by an elevation certificate from a surveyor who works in the county. Placing fill on low ground near Omak typically needs a floodplain permit, and the building office serving Conconully explains the steps.
Recorded documents in Okanogan County, Washington
The parcel layer for Okanogan County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). Easements and access rights near Oroville live in recorded documents, so read the deed, not just the county map.
Towns and land across Okanogan County
Town lots cluster around Okanogan, the county seat, and Brewster, Omak, Oroville, and Pateros. Smaller places such as Disautel, Loomis, and Malott appear on the Okanogan County map as little clusters of lots. Roughly 5,266 square miles of land and about 43,712 residents (2023 estimate) make up Okanogan County. Outside Omak, most of the county map is farm, ranch or timber ground with large, irregular tracts. With a founding date of 1888, Okanogan County has long chains of title on some rural tracts.
Quick answers for Okanogan County
What if FEMA's map is wrong about my house near Oroville?
FEMA reviews requests such as a LOMA for Okanogan County properties; start with an elevation certificate.
Do I need flood insurance in Zone X in Okanogan County?
Not under federal rules; Zone X in Okanogan County is outside the Special Flood Hazard Area, although a lender can still require coverage.
How can I check an Okanogan County, WA flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Washington Current Parcels layer in ArcGIS Map Viewer; for land near Oroville, a zone starting with A or V is high risk.
Can I build in a flood zone in Okanogan County?
Building in a Special Flood Hazard Area near Tonasket typically needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
What does Zone AE mean on an Okanogan County flood map?
Yes, a tract around Oroville in Zone AE is high risk: a 1-percent-annual-chance floodplain where FEMA lists a base flood elevation.
Open the official Okanogan County, WA parcel map Okanogan County 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.