Blog · October 14, 2026 · New York
Sullivan County Flood Zone Map, New York
How to check whether a property in Sullivan County sits in a FEMA flood zone, and what the answer means for a buyer near Delaware.
Main page: Sullivan County, NY GIS & Parcel Viewer (official map link, Sullivan County facts and neighboring maps).
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Before you buy a house in Forestburgh, add on to a barn near Bethel, or price a lot along Delaware River, check the Sullivan County flood zone map. You can check it yourself for any Forestburgh address in a few minutes.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Forestburgh, and short answers to common questions.
Look up the Sullivan County flood zone map step by step
Start at the FEMA Flood Map Service Center and enter the property address in Delaware or anywhere else in the county. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Delaware location, which you can view or download. If the PDF panel for Sullivan County is hard to read, the National Flood Hazard Layer viewer is easier to use and reports the zone wherever you click near Delaware. Switch to the Sullivan County ArcGIS parcel map and find the same piece of ground near Monticello. If the Sullivan County viewer has a floodplain layer, treat it as a convenience copy and confirm on FEMA's map.
Opening the Sullivan County parcel viewer
The county's own public map is the Sullivan County ArcGIS parcel map, built on an Esri ArcGIS web map, and it opens without an account for parcels in Bethel and the rest of the county. Click any Sullivan County parcel near Bethel to open its record: owner, parcel ID and assessed acreage are most frequently listed. Our Sullivan County, NY page keeps the official link and the maps next door to Monticello in one place.
Tracts that cross the Sullivan County line
Near the edge of the county, check the next map over: Delaware County, Orange County, Ulster County, Pike County, PA, and Wayne County, PA all border it. Every map bordering Sullivan County is listed on our New York directory.
Zone A, AE and X in plain English
Any Sullivan 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. Zone AE near Monticello means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. Land near Monticello in shaded X (Zone B on older maps) is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded Zone X near Monticello is minimal risk.
Recorded documents in Sullivan County, New York
For land near Fallsburg, the deed itself lives in the county recording office, and the map is an index to it. A deed book and page or instrument number on the county record is the fastest way to request the document for a lot in Fallsburg.
Waterfront parcels near Monticello
In Sullivan County, look closest at tracts along Delaware River and Upper Delaware Scenic and Recreational River. On many properties around Delaware, the zone covers the low ground by the water while the homesite near the road is outside it. Small streams and ditches near Delaware may not be studied in detail, which is why it is worth walking the ground after a heavy rain.
From Monticello to the back roads
From Monticello, the seat of the county, the map spreads out to Bethel, Callicoon, Cochecton, and Delaware. Unincorporated communities in Sullivan County, including Barryville, Bridgeville, and Eldred, display up as small groups of parcels along the roads. Census Bureau estimates put Sullivan County at about 79,920 residents in 2023 on about 968 square miles of land. The Sullivan County map mixes subdivision lots near Cochecton with farm and wooded tracts farther out. With a founding date of 1809, Sullivan County has long chains of title on some rural tracts.
Insurance, permits and map changes
The zone shows up again when a loan on a house near Monticello is underwritten. Where a building in Delaware is mapped in a high-risk zone and carries a federally backed mortgage, federal rules call for flood insurance under the Flood Disaster Protection Act, wherever the community joins the NFIP. In Zone X near Delaware, insurance is a choice, not a mandate, although a lender in New York can still ask for it. Where a structure near Delaware looks higher than the shading suggests, the titleholder can ask FEMA for a Letter of Map Amendment (LOMA), most frequently backed by an elevation certificate from a surveyor who works in the county. Building or filling inside a mapped zone near Delaware most frequently needs a floodplain permit, so call the county or the town office in Delaware before work starts.
Sullivan County flood zones questions
Do I need flood insurance in Zone X in Sullivan County?
For a Zone X house near Forestburgh, federal rules don't require flood insurance; buying it is still a choice worth pricing.
How do I challenge a flood zone for a lot in Bethel?
FEMA reviews requests such as a LOMA for Sullivan County properties; start with an elevation certificate.
What is a base flood elevation for a Sullivan County property?
On the map covering Bethel, it is the projected water surface in the base flood; elevation certificates in Sullivan County are measured against it.
Do I need a permit to build in the floodplain near Bethel?
Building in a Special Flood Hazard Area near Bethel most frequently needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
Does a 100-year floodplain near Forestburgh flood only once a century?
No, ground around Bethel mapped that way faces a 1-percent annual chance, not a once-a-century schedule.
Open the official Sullivan County, NY parcel map Sullivan 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.