Blog · October 14, 2026 · South Dakota
Butte County Flood Zone Map, South Dakota: a practical guide
Flood zones are set by FEMA, and checking one near Belle Fourche takes a few minutes.
Main page: Butte County, SD GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Nisland? The Butte County flood zone map tells you whether it sits in a FEMA flood zone, and the lookup is free. Covered here for Butte County: locating a parcel on FEMA's map, reading the zone codes, and pairing it with the District III regional GIS map.
Where the Butte County flood zone map lives
Out toward Hoover, the official source is FEMA's Flood Map Service Center: enter the street address, then open the map view for that panel. Vacant ground around Castle Rock is still easy to locate: pan from the closest town then click the parcel area.
Opening the official parcel viewer
Property in and around Vale appear on the District III regional GIS map, which opens without registering. If you only know roughly where the land is, pan along the nearest road and select the outline, whether the land is near Arpan or elsewhere in the county. For a home near Arpan, copy the parcel ID before closing the panel; every clerk in the county uses it to find the file.
Places you'll see on the map
Belle Fourche holds the county offices, home to the main records offices. Smaller places on the map include Newell, Fruitdale, Nisland, and Vale, each with its own cluster of lots. Around 10,863 people call Butte County home (Census estimate, 2023) spread over some 2,250 square miles. Butte County was formed in 1883, which matters when you trace an old farm's title.
Reading the legal description
South Dakota follows the Public Land Survey System, so rural legal descriptions near Belle Fourche cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Belle Fourche vary in size. Write down the legal description for the tract near Minnesela before you request a deed or survey.
What to request from a seller
For acreage around Hoover, ask the listing agent about past flood claims before closing; getting a quote early keeps the budget honest.
Zones on the Butte County flood zone map
For a tract near Minnesela, A and V zones mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. For property near Belle Fourche, a low-risk label isn't a guarantee: FEMA notes that many claims come from moderate- and low-risk areas.
Matching the zone to the lot lines
FEMA's map shows zones but not ownership, so open the District III regional GIS map next to see exactly which lot near Belle Fourche you're looking at.
Beyond the mapped zones
Low-lying fields near Hoover aren't always studied in detail, so look for water marks and debris lines. Wetlands near Castle Rock can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
When a parcel crosses a boundary
Butte County touches Carter County, MT, Harding County, Lawrence County, Meade County, and Perkins County, and each of those keeps its own parcel map. Acreage along the edge near Hoover may show up across two assessors' files, so look at the neighboring map before you assume the acreage. With a lot near Hoover, the Platbookmapper state page links each bordering county map for South Dakota.
Recorded documents worth pulling
If the land is near Arpan, the map is an index, not the title: recorded deeds, subdivision plats and easements for parcels in the county are kept by the Register of Deeds. Long-held tracts near Minnesela may sit on a long string of deeds, so a title company can sort it out before a purchase.
Lenders and permits
If a building sits in a Special Flood Hazard Area and a federally regulated lender is involved, flood insurance is generally required where the community participates in the National Flood Insurance Program, which applies near Vale as much as anywhere. Building or adding on near Hoover in a mapped zone usually means extra permit review; ask the local floodplain administrator early.
Limits of the parcel data
If you're looking near Fruitdale, acreage on the record is an estimate; only a licensed surveyor sets the real boundary on the ground. Records update in batches, so a recent sale near Minnesela can take weeks to appear.
On site with the map
Most viewers work in a phone browser, useful out on a road near Minnesela, so load it before you lose signal. A screenshot of the parcel near Nisland with its ID is a good backup.
Butte County: common questions
Can I see flood zones on the District III regional GIS map around Belle Fourche?
For a parcel near Hoover, some county viewers include a FEMA flood layer, though it can lag behind FEMA's current panels.
What is a base flood elevation in Butte County?
If you're looking near Castle Rock, the base flood elevation is the water level expected in the 1% annual chance flood; local rules may require building above it.
Is my property near Hoover in a flood zone?
Search the address near Newell on FEMA's Flood Map Service Center, and the zone code appears on the map.
Why did my flood zone near Vale change?
Near Belle Fourche, FEMA revises flood maps panel by panel as new studies finish, so look at the panel date.
What's a legal description for land near Castle Rock?
In and around Castle Rock, Deeds use lot and block, metes and bounds or survey descriptions; copy it for any survey or title request.
Open the official Butte 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.