Blog · October 14, 2026 · New York
Ontario County Flood Zone Map: checking a property's flood zone
Flood zones are set by FEMA, and checking one near Border City takes a few minutes.
Main page: Ontario County, NY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Farmington, look at the Ontario County flood zone map: FEMA's zone label affects insurance, building rules and resale. What this Ontario County guide covers: finding the address on FEMA's map, decoding A, AE and X, and confirming the outline on the county map.
Checking the Ontario County flood zone map step by step
If you'd rather pan and zoom, try the National Flood Hazard Layer viewer, where zone shading sits over a photo base, for land near Border City included. Vacant ground around Farmington is still easy to locate: pan from the closest town and click inside the land.
Opening the official parcel viewer
Begin with the Ontario County parcel viewer; it includes every tax parcel in the county, Canadice included. For property near Centerfield, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. Closer to East Bloomfield, write down the parcel ID before closing the panel; each office in the county will want it.
What to request from a seller
If you're looking near Canadice, ask the listing agent for any Elevation Certificate before closing; getting a quote early avoids surprises.
A quick look at the area
Canandaigua serves as the county seat, home to the main records offices. Other places on the map include Bristol, Canadice, East Bloomfield, and Farmington, each with its own cluster of lots. Roughly 112,494 people call Ontario County home (Census estimate, 2023) across roughly 644 square miles. Ontario County dates to 1789, so old deeds can run back a long way.
What the zone letters mean
In and around Border City, A and V zones are Special Flood Hazard Areas, meaning a 1% or greater chance of flooding each year. On ground around Canadice, a shaded X area marks moderate flood hazard, roughly the 100- to 500-year range; plain X, or C on older maps, means minimal mapped risk.
Field tips
Most viewers work in a phone browser, handy when you're parked on a road near East Bloomfield, though signal can drop in rural spots. A screenshot of the parcel near Hall with its ID is a good backup.
Low spots and local drainage
Low-lying fields near East Bloomfield may not have detailed mapping, so ask neighbors about past flooding. Wet ground around Hall is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
Lining it up with the parcel map
FEMA doesn't draw property lines, so open the Ontario County parcel viewer next for the outline of the tract near Bristol.
Limits of the parcel data
Listed acreage is an estimate; only a licensed surveyor can set the real lines for a parcel near Canandaigua. Owner names and values update on a schedule, so a recent sale near Canadice can take weeks to appear.
What a flood zone means for a buyer
For a structure inside an A or V zone and a federally regulated lender is involved, mandatory purchase rules apply in communities in the NFIP, which applies near Centerfield as much as anywhere. New construction in a floodplain near Cheshire can trigger elevation rules; check with the county or town building office early.
The paper trail behind a parcel
For a parcel near Bristol, the map is an index, not the title: deeds, subdivision plats and easements for parcels in the county are filed with the County Clerk. For a home near Bristol, bring the instrument number shown in the record panel and the lookup takes minutes.
When a parcel crosses a boundary
Ontario County meets Livingston County, Monroe County, Seneca County, Steuben County, and Wayne County, and each of those keeps its own parcel map. A tract near the line by Fishers may be split in two county records, so look at the adjacent map before you assume the acreage. For acreage around Farmington, our state page lists each neighboring county map across New York.
Legal descriptions in New York
Older tracts around Canandaigua are often described by metes and bounds, listing bearings, distances and landmarks. Platted lots around Canadice are typically described by lot and block, which is simpler to follow. Copy the legal description from the record for the parcel near Fishers before you request a deed or survey.
Quick answers
Does the county parcel map show flood zones for land near Geneva?
For most people, a flood layer may appear in the county parcel viewer layer list; confirm a lot near Canadice on FEMA's map either way.
What is a base flood elevation for land near East Bloomfield?
Closer to Fishers, the base flood elevation is the water level expected in the 1% annual chance flood, and an Elevation Certificate compares the building to it.
Can I challenge a flood zone near Canadice?
Closer to Canandaigua, a Letter of Map Amendment (LOMA) from FEMA can remove a structure on naturally high ground; a surveyor's elevation data supports it.
Can a property in Zone X near Centerfield flood?
In most cases, Zone X near Centerfield means moderate (shaded) or minimal (unshaded) mapped risk; many owners near Cheshire buy coverage anyway.
How is land described in New York deeds around Cheshire?
For a parcel near Bristol, deeds use lot and block, metes and bounds or survey descriptions; a surveyor can interpret it.
Open the official Ontario 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.