Blog · October 14, 2026 · Pennsylvania
Reading the Sunbury Flood Zone Map for a parcel
Flood zones are set by FEMA, and checking one near Northumberland takes a few minutes.
Main page: Northumberland County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around McEwensville? Checking the Sunbury flood zone map reveals whether FEMA puts it in a high-risk zone, and the lookup is free. Covered here for Sunbury: finding the address on FEMA's map, reading the zone codes, and pairing it with the Northumberland County Basemap viewer.
The Sunbury flood zone map: start here
The official source is FEMA's Flood Map Service Center: search an address around Watsontown, then open the map view for that panel. Vacant ground around Shamokin can still be found: zoom in from Interstate 180 and click the spot.
Pulling up a parcel
The official parcel map for this area is the Northumberland County Basemap viewer, and no login is needed to use it. If you only know roughly where the land is, pan along Interstate 180 and click the parcel itself. If you're looking near Northumberland, a pop-up or side panel typically gives the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
Sunbury and the county around it
Sunbury is part of Northumberland County, Pennsylvania, so its parcels are on the county's map. Sunbury is also the county seat, so deeds and plats are filed in town. For property near Watsontown, city or town hall handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Lots just outside the town limits toward McEwensville generally falls under county rules, not municipal ones.
Getting your bearings
Sunbury is the county seat, which is where the courthouse records live. You'll also find Northumberland, Milton, Herndon, and Shamokin, each with its own cluster of lots. Around 90,120 people live in Northumberland County (Census estimate, 2023) on roughly 458 square miles. Northumberland County was formed in 1772, and some chains of title near Herndon are long. Features like Susquehanna River are easy to spot when you zoom out from Watsontown.
Getting answers from the right desk
For assessment questions about property around Milton go to the county assessment office, which maintains the tax roll. Zoning, permits and septic questions near Northumberland are for the local planning and health departments, depending on whether the land is inside town limits.
What the zone letters mean
For a tract near Northumberland, zones beginning with A or V mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. Out toward Watsontown, shaded Zone X is moderate risk, between the 1% and 0.2% annual chance floods; unshaded X means minimal mapped risk.
Questions to ask before you buy
Request for any Elevation Certificate on the property near Northumberland; an insurance quote early avoids surprises.
Recorded documents worth pulling
For anything that matters, get the recorded deed from the Recorder of Deeds; the parcel map near Herndon only summarizes it. Inherited tracts near Northumberland may go back through many deeds, and a title company is worth hiring if money is changing hands.
Water near Northumberland
Low-lying fields near Shamokin aren't always studied in detail, so ask neighbors about past flooding. Wetlands near Northumberland can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
Before you lean on the lines
Parcel lines are drawn for taxes, not surveyed, so a tree line near McEwensville can sit several feet off the line on screen. Near Watsontown, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Matching the zone to the lot lines
FEMA doesn't draw property lines, so open the Northumberland County Basemap viewer next to confirm you have the right parcel near Milton.
Money questions tied to the zone
With a lot near McEwensville, get the Elevation Certificate if one exists: it can change the insurance price a lot. New construction in a floodplain near Shamokin often needs a floodplain permit; call the permitting office before you plan.
Land on the county line
Northumberland County borders Columbia County, Dauphin County, Juniata County, Lycoming County, and Montour County, all with their own assessor records. Acreage along the edge near Shamokin can show up across two assessors' files, so open the adjacent map too. For a parcel near Northumberland, our state page links each neighboring county map for Pennsylvania.
Frequently asked
What is a base flood elevation for land near Milton?
In most cases, the base flood elevation is the water level expected in the 1% annual chance flood; surveyors near Herndon use it often.
Is Zone X safe from flooding around McEwensville?
In most cases, X zones around Shamokin are lower risk, not no risk; many owners near Herndon buy coverage anyway.
What does Zone AE mean near McEwensville?
Short answer: an AE zone has a 1% annual chance of flooding and a base flood elevation, which shapes building rules near Milton.
Will my lender require flood insurance near Herndon?
It depends, but for a building near Watsontown in an A or V zone with a federally backed or regulated mortgage, it's generally required; outside those zones it's your call.
Which office handles records for land near McEwensville?
For land near Herndon, assessment goes to the county assessment office and deeds to the Recorder of Deeds, while zoning questions go to planning
Open the official Northumberland 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.