Blog · October 14, 2026 · Missouri
Maplewood Flood Zone Map, Missouri: a practical guide
Flood zones are set by FEMA, and checking one near Rock Hill takes a few minutes.
Main page: St. Louis County, MO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy or build near Clayton, check the Maplewood flood zone map: FEMA's zone label affects insurance, building rules and resale. What this Maplewood guide covers: finding the address on FEMA's map, decoding A, AE and X, and matching it with the county parcel viewer.
Checking the Maplewood flood zone map step by step
Flood zones come from FEMA's Flood Map Service Center: type an address near Richmond Heights, then open the map view for that panel. Vacant ground around Shrewsbury can still be found: zoom in from Interstate 64 then click the parcel area.
Getting to the right map
Your first stop is the St. Louis County ArcGIS parcel map; it maps each tax parcel in the county, Richmond Heights included. On ground around Webster Groves, put in a street address, an owner's name or a parcel number, then pick the result to center the map on it. For a home near Clayton, the parcel card usually lists the owner of record, acreage on the tax roll, the parcel number and often a sale date.
Maplewood and the county around it
Maplewood sits in St. Louis County, Missouri, so its parcels are on the county's map. For acreage around Richmond Heights, city or town hall handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Lots just outside the town limits out by Rock Hill often follows county rules instead.
Low spots and local drainage
Low-lying fields near Rock Hill aren't always studied in detail, so ask neighbors about past flooding. Wet ground around Richmond Heights is a separate issue from flood zones; check the National Wetlands Inventory mapper for a first look.
Using it on a phone
Most viewers work in a phone browser, which helps when you're standing on land near Richmond Heights, so load it before you lose signal. A screenshot of the parcel near Webster Groves with its ID is a good backup.
Places you'll see on the map
Clayton holds the county offices, where most land records are kept. Smaller places on the map include Brentwood, Richmond Heights, and Shrewsbury, each with its own cluster of lots. Out toward Rock Hill, around 987,059 people call St. Louis County home (Census estimate, 2023) on about 508 square miles. St. Louis County dates to 1812, and some chains of title near Richmond Heights are long. Places such as Spanish Lake Park and Babler State Park make handy reference points on the map near Richmond Heights.
Reading the legal description
Missouri uses the Public Land Survey System, so deeds around Clayton reference sections and townships. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Richmond Heights odd-sized. Keep the legal description for land near Webster Groves before you request a deed or survey.
When a parcel crosses a boundary
For land near Brentwood, st. Louis County borders Madison County, IL, Monroe County, IL, St. Clair County, IL, Franklin County, and Jefferson County, and each of those keeps its own parcel map. Acreage along the edge near Brentwood can be split in two county records, so look at the neighboring map too. For a tract near Shrewsbury, our state page lists each bordering county map for Missouri.
Decoding the flood zone labels
Zone AE carries a published BFE, which plain A zones lack; surveyors near Webster Groves use that number. For a tract near Webster Groves, a low-risk label isn't a guarantee: FEMA notes that floods happen outside mapped zones too.
Use the county map alongside FEMA
FEMA doesn't draw property lines, so pair it with the St. Louis County ArcGIS parcel map for the outline of the tract near Shrewsbury.
What to request from a seller
Request for any Elevation Certificate on the property near Shrewsbury; an insurance quote early avoids surprises.
Lenders and permits
For acreage around Brentwood, ask for an Elevation Certificate: it compares the building to the BFE. Remodeling a house in a zone near Richmond Heights often needs a floodplain permit; call the permitting office before you plan.
Questions about the Maplewood flood zone map
What is a LOMA around Richmond Heights?
It depends, but you can ask FEMA for a LOMA if surveyed elevations show the building near Webster Groves is above the BFE; it starts with an elevation survey.
Is AE a high-risk flood zone in Maplewood?
For most people, AE is a Special Flood Hazard Area with a published base flood elevation, so builders near Brentwood design to that elevation.
When is flood insurance required in Maplewood?
For most people, for a building near Rock Hill in an A or V zone with a federally backed or regulated mortgage, it's generally required; outside those zones it's your call.
Does the county parcel map show flood zones near Clayton?
It depends, but some county viewers include a FEMA flood layer; confirm a lot near Webster Groves on FEMA's map either way.
Where is the legal description for land near Shrewsbury?
If the land is near Shrewsbury, Deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official St. Louis County, MO 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.