Blog · October 14, 2026 · South Dakota
Brown County Flood Zone Map, South Dakota: a practical guide
Flood zones are set by FEMA, and checking one near Bath Corner takes a few minutes.
Main page: Brown County, SD GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Frederick? Checking the Brown County flood zone map reveals whether the lot falls inside a mapped floodplain, and no account is needed. In this Brown County guide: locating a parcel on FEMA's map, reading the zone codes, and matching it with the county parcel viewer.
The Brown County flood zone map: start here
If the land is near Stratford, the official source is FEMA's Flood Map Service Center: enter the street address, and choose the dynamic map. Rural land near Claremont with no street number is still easy to locate: search the nearest road and click the spot.
Opening the official parcel viewer
Parcels around Claremont are published on the Brown County Beacon site, free to use and open without a login. With a lot near Ferney, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. For a parcel near Ferney, save the parcel ID while you have it open; each clerk in the county uses it to find the file.
Questions to ask before you buy
In and around Hutterville Colony, ask the listing agent about past flood claims before closing; getting a quote early avoids surprises.
When a parcel crosses a boundary
Brown County borders Dickey County, ND, Sargent County, ND, Day County, Edmunds County, and Faulk County, all with their own assessor records. Acreage along the edge near Frederick may be split in two county records, so check the neighboring map too. Near Ferney, the Platbookmapper state page links each bordering county map for South Dakota.
On site with the map
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Bath, so load it before you lose signal. A printout of the tract near Bath Corner keeps working without signal.
What the zone letters mean
If you're looking near Bath, A and V zones are Special Flood Hazard Areas, which FEMA defines as a 1% annual chance of flooding. For a home near Ferney, shaded Zone X marks moderate flood hazard, roughly the 100- to 500-year range; plain X, or C on older maps, means minimal mapped risk.
Matching the zone to the lot lines
FEMA doesn't draw property lines, so check the Brown County Beacon site too to confirm you have the right parcel near Sand Lake National Wildlife Refuge.
How land is described here
South Dakota uses the Public Land Survey System, so deeds around Claremont reference sections and townships. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though corrections make some sections near Hutterville Colony odd-sized. Copy the legal description from the record for the parcel near Hecla for any title or survey request.
Lenders and permits
In and around Stratford, get the Elevation Certificate if one exists: it can change the insurance price a lot. New construction in a floodplain near Frederick usually means extra permit review; check with the county or town building office before you plan.
Backing up the map with records
For anything that matters, pull the recorded deed through the Register of Deeds; the parcel line is a drawing of it, whether the land is near Hecla or elsewhere in the county. Long-held tracts near Bath Corner may go back through a long string of deeds, and a title company can sort it out if money is changing hands.
Beyond the mapped zones
Small streams around Frederick aren't always studied in detail, so ask neighbors about past flooding. Marshy spots near Hecla can limit building too; check the National Wetlands Inventory mapper for a first look.
Brown County in a few facts
Aberdeen is the county seat, home to the main records offices. You'll also find Columbia, Groton, Claremont, and Frederick, each with its own cluster of lots. Around 37,733 people live in this county (Census Bureau estimate, 2023) on about 1,713 square miles, at least around Aberdeen. The county dates to 1881, so old deeds can run back a long way around Sand Lake National Wildlife Refuge. Features like James River and Sand Lake National Wildlife Refuge help you orient on the aerial.
Getting answers from the right desk
Anything recorded against property around Claremont sit in the index kept by the Register of Deeds, sometimes only in person. Building or septic questions for a lot near Bath go to planning, building or health offices, depending on whether the land is inside town limits.
Frequently asked
What does an AE label mean for a lot near Hecla?
If the land is near Hutterville Colony, both are high-risk zones, but only AE has a base flood elevation; unnumbered A zones don't list one.
When is flood insurance required for land near Mansfield?
Out toward Hutterville Colony, it's typically required only for structures in high-risk zones with federally backed loans; outside those zones it's your call.
How do I check the flood zone for an address in Brown County?
It depends, but search the address near Bath on FEMA's Flood Map Service Center; no account is needed.
What is a base flood elevation near Hutterville Colony?
On ground around Aberdeen, the base flood elevation is the water level expected in the 1% annual chance flood; local rules may require building above it.
How is land described in South Dakota deeds for land near Hecla?
For acreage around Bath Corner, Deeds use lot and block, metes and bounds or survey descriptions; a surveyor can interpret it.
Open the official Brown County, SD 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.