Blog · October 14, 2026 · New York
Onondaga County Flood Zone Map: checking a property's flood zone
The zone on FEMA's map affects insurance, building and resale near Borodino.
Main page: Onondaga County, NY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Syracuse? A quick look at the Onondaga County flood zone map shows whether the lot falls inside a mapped floodplain, and it costs nothing to check. What this Onondaga County guide covers: the free FEMA tools, what each zone label means, when insurance is required and how to challenge a map that looks wrong.
Where the Onondaga County flood zone map lives
In and around Skaneateles Lake, start with FEMA's Flood Map Service Center: enter the street address, and choose the dynamic map. A tract near Skaneateles Lake without an address can still be found: zoom in from Interstate 690 and click inside the land.
The viewer Onondaga County publishes
Your first stop is the Onondaga County parcel viewer; it includes each tax parcel from Skaneateles Lake to Camillus. Without an address in hand, follow Interstate 690 on the aerial until the lines appear, then click inside the one you want. If the land is near Elbridge, the parcel card usually lists the owner of record, assessed acreage, a parcel ID and often a sale date.
What to request from a seller
If you're looking near Skaneateles Lake, ask the listing agent whether the home has flooded before closing; an insurance quote early avoids surprises.
Recorded documents worth pulling
For land near Camillus, the map is an index, not the title: recorded deeds, subdivision plats and easements for parcels in the county are kept by the County Clerk. Inherited tracts near Skaneateles Lake can go back through a long string of deeds, so a title company is worth hiring if money is changing hands.
Before you lean on the lines
With a lot near Delphi Falls, listed acreage is an assessed number; only a licensed surveyor establishes the real corners on the ground. For a tract near Elbridge, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Sections, lots and bearings
Older tracts around DeWitt are often described by metes and bounds, a series of courses and distances from a starting point. Platted lots around Clay refer to a recorded plat, which is simpler to follow. Keep the legal description for land near Skaneateles Lake before you request a deed or survey.
Zones on the Onondaga County flood zone map
For a tract near Clay, zones beginning with A or V are Special Flood Hazard Areas, meaning a 1% or greater chance of flooding each year. In and around Camillus, shaded Zone X is moderate risk, roughly the 100- to 500-year range; plain X, or C on older maps, is minimal risk.
On site with the map
Most viewers work in a phone browser, which helps when you're standing on land near Cicero, so load it before you lose signal. A saved image of the lot near Camillus and its lines keeps working without signal.
Lining it up with the parcel map
FEMA doesn't draw property lines, so pair it with the Onondaga County parcel viewer to see exactly which lot near Camillus you're looking at.
Low spots and local drainage
Low-lying fields near Cicero aren't always studied in detail, so ask neighbors about past flooding. Wetlands near Jack's Reef can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
Places you'll see on the map
Syracuse holds the county offices, which is where the courthouse records live. Other places on the map include Camillus, Cicero, Clay, and DeWitt, each with its own cluster of lots. Around 467,873 people live in this county (Census estimate, 2023) spread over roughly 778 square miles, especially near Camillus. The county dates to 1794, and some chains of title near Borodino are long. Features like Lake Ontario and Oneida Lake are easy to spot when you zoom out from Delphi Falls.
Money questions tied to the zone
For a structure inside an A or V zone and a federally regulated lender is involved, mandatory purchase rules apply where the community participates in the National Flood Insurance Program, whether the land is near Jack's Reef or elsewhere in the county. Remodeling a house in a zone near Fabius can trigger elevation rules; call the permitting office early.
Offices that can help
If the acreage or value on a parcel near Delphi Falls looks off are handled by the county Real Property Tax Services office, the office behind the parcel record. Questions about what you can build around Jack's Reef need the planning or permitting office, town or county, depending on location.
Onondaga County: common questions
Is Zone X safe from flooding in Onondaga County?
Shaded X is moderate risk and unshaded X is minimal risk; many owners near Cicero buy coverage anyway.
Is AE a high-risk flood zone for land near Oneida Lake?
For a tract near DeWitt, AE is a Special Flood Hazard Area with a published base flood elevation; unnumbered A zones don't list one.
How can I tell if a house near Elbridge is in a flood zone?
For most people, look up the spot near Clay in FEMA's National Flood Hazard Layer viewer; no account is needed.
Is there a flood layer on the parcel viewer near Skaneateles Lake?
Short answer: the parcel map near DeWitt might show FEMA zones, but FEMA's own map is the official source.
Why don't the lines match my fence near Jack's Reef?
In and around Cardiff, parcel lines are tax drawings, not surveys; a survey sets the real corners
Open the official Onondaga County, NY 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.