Blog · October 14, 2026 · Pennsylvania
Reading the Catasauqua Flood Zone Map for a parcel
Flood zones are set by FEMA, and checking one near Coplay takes a few minutes.
Main page: Lehigh County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Bethlehem, look at the Catasauqua flood zone map: the zone on that map shapes insurance, building rules and resale. In this Catasauqua guide: finding the address on FEMA's map, reading the zone codes, and pairing it with the Lehigh County ArcGIS parcel map.
Where the Catasauqua flood zone map lives
The official source is FEMA's Flood Map Service Center: search an address around Slatington, and choose the dynamic map. Rural land near Fountain Hill with no street number is still easy to locate: zoom in from US Route 222 then click the parcel area.
Pulling up a parcel
Go first to the Lehigh County ArcGIS parcel map; it includes each assessed parcel from Emmaus to Coplay. When a rural tract has no street number, follow US Route 222 on the aerial until the lines appear, then click inside the one you want. On ground around Bethlehem, the record panel normally shows the owner of record, assessed acreage, the parcel number and in many cases the last transfer.
Catasauqua, PA: the basics
Catasauqua is part of Lehigh County, Pennsylvania, which means parcel data comes from the county. For a tract near Coplay, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Lots just outside the city limits near Coplay often answers to county rules, not municipal ones.
How land is described here
Tracts outside towns near Slatington are often described by metes and bounds, listing bearings, distances and landmarks. Platted lots around Slatington refer to a recorded plat, making them easier to find. Copy the legal description from the record for the parcel near Coplay for any title or survey request.
Getting your bearings
Allentown is the county seat, where most land records are kept. You'll also find Coplay, Fountain Hill, and Bethlehem, each with its own cluster of lots. Roughly 377,754 people call Lehigh County home (Census estimate, 2023) across some 345 square miles. Lehigh County was formed in 1812, and some chains of title near Coplay are long.
Questions to ask before you buy
Ask the seller whether the home has flooded on the property near Slatington; an insurance quote early avoids surprises.
What the zone letters mean
Zone AE carries a published BFE, while plain Zone A does not; surveyors near Allentown use that number. If the land is near Slatington, a shaded X area marks moderate flood hazard, roughly the 100- to 500-year range; plain X, or C on older maps, is minimal risk.
Matching the zone to the lot lines
FEMA's map shows zones but not ownership, so pair it with the Lehigh County ArcGIS parcel map to confirm you have the right parcel near Fountain Hill.
The paper trail behind a parcel
The map is an index, not the title: deeds, subdivision plats and easements covering ground around Emmaus are filed with the Recorder of Deeds. If you're looking near Coplay, have ready the document number shown in the record panel and the lookup takes minutes.
Beyond the mapped zones
Small streams around Emmaus aren't always studied in detail, so walk the land after rain. Wetlands near Emmaus can limit building even outside a flood zone; check the National Wetlands Inventory mapper for a first look.
Taking the map into the field
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Slatington, but coverage can be spotty out of town. A saved image of the lot near Slatington and its lines is a good backup.
Insurance, lenders and building
If a building sits in a Special Flood Hazard Area and the loan is federally backed or regulated, flood insurance is generally required in communities in the NFIP, and that holds around Emmaus too. Remodeling a house in a zone near Allentown can trigger elevation rules; check with the county or town building office before you plan.
When a parcel crosses a boundary
Lehigh County touches Berks County, Bucks County, Carbon County, Montgomery County, and Northampton County, all with their own assessor records. Acreage along the edge near Allentown can be split across two assessors' files, so open the adjacent map before you assume the acreage. If you're looking near Coplay, our state page links every bordering county map for Pennsylvania.
Frequently asked
What is a base flood elevation in Catasauqua?
Usually, the base flood elevation is the water level expected in the 1% annual chance flood; surveyors near Bethlehem use it often.
How often are flood maps updated for land near Allentown?
Usually, zones near Slatington can shift when FEMA updates a panel; your community is notified before changes take effect.
Will my lender require flood insurance near Coplay?
Usually, lenders generally require it for buildings near Bethlehem in a Special Flood Hazard Area when the loan is federally regulated or insured, in communities that take part in the NFIP.
Does the county parcel map show flood zones for land near Emmaus?
Good question; a flood layer may appear in the Lehigh County ArcGIS parcel map layer list, but FEMA's own map is the official source.
Is the parcel map a survey for land near Bethlehem?
The map near Coplay is approximate; a survey sets the real corners
Open the official Lehigh County, PA 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.