Blog · October 14, 2026 · New York
Reading the Tompkins County Flood Zone Map for a parcel
The zone on FEMA's map affects insurance, building and resale near Forest Home.
Main page: Tompkins County, NY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy or build near Ellis Hollow, pull up the Tompkins County flood zone map: a mapped flood zone changes insurance, permits and resale. This county guide covers: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Tompkins County ArcGIS parcel map for land near Forest Home.
Checking the Tompkins County flood zone map step by step
For parcel-by-parcel detail, open the National Flood Hazard Layer viewer, which draws the zones over aerial imagery, for land near Ellis Hollow included. A tract near Enfield without an address is still easy to locate: pan from the closest town then click the parcel area.
The viewer Tompkins County publishes
Begin with the Tompkins County ArcGIS parcel map; it includes every assessed parcel in the county, Danby included. Closer to Caroline, type a street address, an owner's name or a parcel number, and the matching parcel lights up. If you're looking near Ellis Hollow, the parcel card typically gives the owner of record, assessed acreage, a parcel ID and often a sale date.
Getting answers from the right desk
If the acreage or value on a parcel near Ellis Hollow looks off are handled by the county Real Property Tax Services office, which maintains the tax roll. Zoning, permits and septic questions near Enfield need the planning or permitting office, and the answer depends on jurisdiction.
On site with the map
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Caroline, but coverage can be spotty out of town. A saved image of the lot near Ellis Hollow and its lines helps when you meet an owner or agent.
Questions to ask before you buy
If you're looking near Podunk, request whether the home has flooded before closing; getting a quote early avoids surprises.
How land is described here
Tracts outside towns near Dryden are often described by metes and bounds, listing bearings, distances and landmarks. Subdivision lots in South Hill are typically described by lot and block, making them easier to find. Keep the legal description for land near Dryden before you request a deed or survey.
Reading A, AE and X
On ground around Podunk, A and V zones mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. Closer to Forest Home, shaded Zone X is moderate risk, between the 1% and 0.2% annual chance floods; unshaded X means minimal mapped risk.
Matching the zone to the lot lines
FEMA's map shows zones but not ownership, so pair it with the Tompkins County ArcGIS parcel map to see exactly which lot near Caroline you're looking at.
Beyond the mapped zones
Low-lying fields near Enfield may not have detailed mapping, so look for water marks and debris lines. Wetlands near Forest Home can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
What a flood zone means for a buyer
If a building sits in a Special Flood Hazard Area and the loan is federally backed or regulated, mandatory purchase rules apply where the community participates in the National Flood Insurance Program, which applies near Jacksonville as much as anywhere. New construction in a floodplain near Forest Home usually means extra permit review; ask the local floodplain administrator early.
Places you'll see on the map
Ithaca holds the county offices, which is where the courthouse records live. Other places on the map include Caroline, Danby, Dryden, and Enfield, where town lots give way to larger tracts. Around 103,558 people call Tompkins County home (Census estimate, 2023) spread over about 475 square miles. The county was formed in 1817, and some chains of title near Forest Home are long.
Limits of the parcel data
The acreage figure is a tax-roll number; only a licensed surveyor can set the real boundary on land around Dryden. Out toward Enfield, records update in batches, so a deed recorded last month might lag behind.
Next door to this county around Dryden.
Tompkins County meets Cayuga County, Chemung County, Cortland County, Schuyler County, and Seneca County, and each of those keeps its own parcel map. Acreage along the edge near Podunk may show up across two assessors' files, so open the adjacent map before you assume the acreage. In and around Jacksonville, our state page lists each neighboring county map for New York.
Quick answers
Is Zone X safe from flooding around Groton?
For most people, Zone X near South Hill means moderate (shaded) or minimal (unshaded) mapped risk; many owners near Podunk buy coverage anyway.
What is a base flood elevation for land near Enfield?
Short answer: a BFE near Dryden tells builders how high the lowest floor should be; surveyors near Caroline use it often.
Is my property near Lansing in a flood zone?
Good question; look up the spot near Caroline in FEMA's National Flood Hazard Layer viewer; no account is needed.
What is a LOMA for land near Ithaca?
Usually, you can ask FEMA for a LOMA if surveyed elevations show the building near Ithaca is above the BFE; it starts with an elevation survey.
Is the parcel map a survey near Danby?
Out toward South Hill, parcel lines are tax drawings, not surveys; a survey sets the real corners
Open the official Tompkins 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.