Blog · October 14, 2026 · South Dakota
Lawrence County Flood Zone Map, South Dakota
How to check if a property in Lawrence County sits in a FEMA flood zone, and what the answer means for a buyer near Lead.
Main page: Lawrence County, SD GIS & Parcel Viewer (official map link, Lawrence County facts and neighboring maps).
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Land along the creek bottoms near Crook City and the flats outside Deadwood are where a Lawrence County flood zone map lookup matters most. Here's how to read FEMA's map for a Lawrence County, SD property and match it to the parcel record.
We'll cover finding a Lawrence County address on FEMA's map, what Zone A, AE and X mean, how the county viewer fits in, and what to do if the map looks wrong.
Look up the Lawrence County flood zone map step by step
Start at the FEMA Flood Map Service Center and enter the property address in Central City or anywhere else in the county. If a piece of ground near Deadwood has no street number yet, search the nearest road and pan to it. If the PDF panel for Lawrence County is hard to read, try FEMA's National Flood Hazard Layer viewer, which lists how much of a Lawrence County parcel sits inside the zone. Then open the Lawrence County Beacon site for Lawrence County to confirm the parcel near Central City. Laying the county parcel outline beside the FEMA shading lists if a homesite near Deadwood sits above or inside the zone.
Search Lawrence County parcels by owner, address or ID
Lawrence County publishes its parcels on the Lawrence County Beacon site, which runs on Schneider Geospatial's Beacon platform, free to use for a lot in Lead or a piece of ground near Central City. Search a Central City address on the county search page, read the report, then jump to the map to see that parcel's outline. For a backup route to the map covering Central City, our Lawrence County directory entry keeps the link current.
Where Lawrence County land records are kept
For land near Central City, the deed itself lives in the county recording office, and the map is an index to it. Easements and access rights near Whitewood live in recorded documents, so read the deed, not just the county map.
From Deadwood to the back roads
Deadwood is the county seat, and Central City, Lead, Spearfish, and Whitewood are among the other towns on the county map. Smaller places such as Boulder Canyon, Crook City, and Mountain Plains appear on the county map as little clusters of lots. Census Bureau estimates put Lawrence County at about 28,053 residents in 2023 on roughly 800 square miles of land. Beyond the town lots in Whitewood, expect big rural parcels across the county.
Near the Lawrence County line
Lawrence County borders Butte County, Meade County, Pennington County, Crook County, WY, and Weston County, WY, and each keeps its own parcel map and records. Our South Dakota page links each map neighboring Lawrence County.
What the flood zone letters mean
Any Lawrence County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, meaning FEMA estimates a 1-percent annual chance of flooding. A surveyor working near Central City uses the base flood elevation printed for AE zones; unnumbered A zones don't have one. Shaded Zone X around Central City falls between the base flood and the 500-year flood. Clear, unshaded X near Central City is outside the 500-year floodplain.
Unmapped creeks in Lawrence County
A creek near Deadwood that lists no detailed zone, so treat an unmapped channel as a reason to ask questions, not proof the ground stays dry.
Flood insurance and building rules in Lawrence County
The zone lists up again when a loan on a house near Deadwood is underwritten. When a Lawrence 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 Lawrence County or the town participates in the NFIP. Outside the A zones around Deadwood, federal rules don't require a policy; pricing a policy for land near Deadwood is still worth a call. Where a structure near Central City looks higher than the shading suggests, the landowner can ask FEMA for a Letter of Map Amendment (LOMA), typically backed by an elevation certificate from a surveyor who works in the county. Adding on to a house near Deadwood inside the zone has to meet local floodplain rules; the county floodplain administrator can say what applies.
Lawrence County flood zones questions
Do I need a permit to build in the floodplain near Whitewood?
Building in a Special Flood Hazard Area near Whitewood typically needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
My lot in Whitewood lists Zone AE. What does that mean?
For a Lawrence County parcel, Zone AE means a Special Flood Hazard Area with a 1-percent annual chance of flooding and a published base flood elevation.
Is there a floodplain layer in the Lawrence County Beacon site?
Check the layer list in the Lawrence County Beacon site; if Lawrence County includes a floodplain layer, confirm the zone on FEMA's map anyway.
Who prepares an elevation certificate for a house in Whitewood?
A professional surveyor or engineer prepares it, and the building office serving Whitewood may already have one on file for newer construction.
What is a base flood elevation for a Lawrence County property?
For a Lawrence County property in Zone AE, the base flood elevation marks how high the 100-year flood is expected to rise; elevation certificates in Lawrence County are measured against it.
What does 100-year flood mean for Lawrence County land?
No; land near Central City in the 100-year floodplain carries a 1-in-100 chance in any single year, and two floods in one decade near Whitewood are possible.
Open the official Lawrence County, SD parcel map Lawrence 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.