Blog · October 14, 2026 · Illinois
The Morgan County Flood Zone Map: an Illinois guide
How to check whether a property in Morgan County sits in a FEMA flood zone, and what the answer means for a buyer near Franklin.
Main page: Morgan County, IL GIS & Parcel Viewer (official map link, Morgan County facts and neighboring maps).
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Land along the creek bottoms near Arcadia and the flats outside Waverly are where a Morgan County flood zone map lookup matters most. Here's how to read FEMA's map for a Morgan County, IL property and match it to the parcel record.
The sections below go from the FEMA search to the Morgan County parcel record, then cover insurance, permits and map changes near Lynnville.
Look up the Morgan County flood zone map step by step
FEMA's official flood maps for Morgan County are free at the FEMA Flood Map Service Center. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Lynnville location, which you can view or download. If the PDF panel for Morgan County is hard to read, try FEMA's National Flood Hazard Layer viewer, so you can see whether the shading reaches a house near Meredosia. Next, the Morgan County ArcGIS parcel map confirms which Morgan County parcel you're looking at. Laying the county parcel outline beside the FEMA shading displays whether a homesite near Meredosia sits above or inside the zone.
Finding the tract on the Morgan County map
For land around Lynnville, open the Morgan County ArcGIS parcel map (an Esri ArcGIS web map); it's the map Morgan County itself publishes. Click any Morgan County parcel near Concord to open its record: owner, parcel ID and assessed acreage are usually listed. Our Morgan County, IL page keeps the official link and the maps next door to Lynnville in one place.
High, moderate and minimal risk in Morgan County
On the FIRM covering Morgan County, zones that start with A or V are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Where a Morgan County tract displays Zone AE, there's a base flood elevation to compare a building against; in Zone A there isn't one. Land near Meredosia in shaded X (Zone B on older maps) falls between the base flood and the 500-year flood. Unshaded X (or C) on the Morgan County panel means minimal risk.
Low ground and small streams around Lynnville
A low spot on a Morgan County tract outside any mapped zone can still flood; FEMA says moderate- and low-risk areas still carry risk.
Flood insurance and building rules in Morgan County
Here's why the zone matters at a closing in Lynnville. When a Morgan County home falls inside an A or V zone and secures a loan from a federally regulated or insured lender, federal rules call for flood insurance, as long as Morgan County or the town participates in the NFIP. For a Morgan County home in shaded or unshaded X, insurance is a choice, not a mandate, although a lender in Illinois can still ask for it. When a county homesite is on a rise inside a mapped zone, a Letter of Map Amendment request is the formal route; a surveyor near Meredosia can supply the elevation data. Adding on to a house near Meredosia inside the zone has to meet local floodplain rules; the county floodplain administrator can say what applies.
Neighboring maps around Morgan County
Near the edge of the county, check the next map over: Brown County, Cass County, Greene County, Macoupin County, and Pike County all border it. Every map bordering Morgan County is listed on our Illinois directory.
Recorded documents in Morgan County, Illinois
For land near Jacksonville, the deed itself lives in the county recording office, and the map is an index to it. Copy the parcel identifier and legal description from the county record well before you request a deed for land near Waverly.
Morgan County at a glance
From Jacksonville, the seat of the county, the map spreads out to Waverly, Chapin, Concord, and Franklin. Smaller places such as Alexander, Literberry, and Arcadia appear on the county map as little clusters of lots. Roughly 569 square miles of land and about 32,140 residents (2023 estimate) make up Morgan County. The Morgan County map mixes subdivision lots near Jacksonville with farm and wooded tracts farther out. Morgan County was organized in 1823, so deeds for older farms near Franklin can run back a long way.
Morgan County, IL: common questions
Who prepares an elevation certificate for a house in Franklin?
A professional surveyor or engineer prepares it, and the building office serving Franklin may already have one on file for newer construction.
Is there a floodplain layer in the Morgan County ArcGIS parcel map?
Check the layer list in the Morgan County ArcGIS parcel map; if Morgan County includes a floodplain layer, confirm the zone on FEMA's map anyway.
How can I check a Morgan County, IL flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Morgan County ArcGIS parcel map; for land near Lynnville, a zone starting with A or V is high risk.
Is flood insurance required for a Zone X lot in Franklin?
FEMA doesn't require it for a Zone X lot in Franklin, but coverage is available and some lenders ask for it.
What is a base flood elevation for a Morgan County property?
Near Lynnville, the BFE is the height floodwater is expected to reach in the 1-percent-annual-chance flood, and it's printed in AE zones.
Is Zone AE near Lynnville high risk?
Yes, a tract close to Lynnville in Zone AE is high risk: a 1-percent-annual-chance floodplain where FEMA lists a base flood elevation.
Open the official Morgan County, IL parcel map Morgan 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.