Blog · October 14, 2026 · South Dakota
Using the Davison County Flood Zone Map
The zone on FEMA's map affects insurance, building and resale near Ethan.
Main page: Davison County, SD GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Mitchell? The Davison County flood zone map tells you whether it sits in a FEMA flood zone, and the lookup is free. In this Davison County guide: finding the address on FEMA's map, reading the zone codes, and pairing it with the District III regional GIS map.
The Davison County flood zone map: start here
For a more interactive look, try the National Flood Hazard Layer viewer, which lets you click a spot and read its zone, whether the land is near Mount Vernon or elsewhere in the county. Rural land near James River with no street number can still be found: search the nearest road then click the parcel area.
Getting to the right map
Begin with the District III regional GIS map; it covers each assessed parcel from Mount Vernon to James River. If you only know roughly where the land is, follow the nearest road on the aerial and click the parcel itself, and that holds around Ethan too. On ground around Ethan, copy the parcel ID from that panel; every clerk in the county asks for it first.
Offices that can help
Questions about value or the owner field for land near Mount Vernon go to the Director of Equalization, since that office keeps the assessment data. Zoning, permits and septic questions near Ethan need the planning or permitting office, depending on whether the land is inside town limits.
A word on accuracy
If you're looking near Loomis, acreage on the record is a tax-roll number; just a licensed surveyor sets the real corners on the ground. If you're looking near Mitchell, records update in batches, so a deed recorded last month might lag behind.
Field tips
Most viewers work in a phone browser, useful out on a road near Loomis, but coverage can be spotty out of town. A printout of the tract near Mitchell keeps working without signal.
Decoding the flood zone labels
With a lot near Ethan, A and V zones mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. For a tract near Mount Vernon, minimal risk is not no risk: according to FEMA, many claims come from moderate- and low-risk areas.
Where the recorded documents are
For anything that matters, request the recorded deed through the Register of Deeds; the parcel line is a drawing of it, for land near Mount Vernon included. In and around Loomis, use the instrument number from the tax record and the lookup takes minutes.
Questions to ask before you buy
Ask the seller about past flood claims on the property near Mitchell; an insurance quote early keeps the budget honest.
Water near James River
Low-lying fields near Ethan aren't always studied in detail, so walk the land after rain. Wet ground around Mount Vernon is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
Legal descriptions in South Dakota
South Dakota uses the Public Land Survey System, so deeds around Mitchell reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though corrections make some sections near Loomis odd-sized. Keep the legal description for land near Mitchell before you request a deed or survey.
A quick look at the area
Mitchell serves as the county seat, where most land records are kept. You'll also find Mount Vernon, Ethan, Loomis, and James River. Roughly 19,922 people live in Davison County (Census Bureau estimate, 2023) across about 436 square miles. Landmarks such as James River help you orient on the aerial.
Parcel lines plus flood zones
FEMA doesn't draw property lines, so pair it with the District III regional GIS map for the outline of the tract near Mitchell.
Next door to Davison County
Davison County borders Aurora County, Douglas County, Hanson County, Hutchinson County, and Sanborn County, all with their own assessor records. A tract near the line by Loomis can show up in two county records, so open the adjacent map before you assume the acreage. For a parcel near Ethan, our state page links every bordering county map for South Dakota.
Money questions tied to the zone
For property near Mount Vernon, ask for an Elevation Certificate: it records the building's elevation against the base flood. Remodeling a house in a zone near Loomis can trigger elevation rules; ask the local floodplain administrator early.
Questions about the Davison County flood zone map
Do I need to worry about flooding in Zone X around Ethan?
In most cases, X zones around Loomis are lower risk, not no risk, and floods still happen outside high-risk zones.
Can a flood zone near Ethan change?
Short answer: zones near Mount Vernon can shift when FEMA updates a panel; your community is notified before changes take effect.
Where do I find the BFE for a lot near James River?
For property near Mount Vernon, the BFE is printed in AE zones on FEMA's map; local rules may require building above it.
Is my property near Mitchell in a flood zone?
Short answer: look up the spot near Ethan in FEMA's National Flood Hazard Layer viewer; no account is needed.
Why do offices ask for the parcel ID around James River?
It's the number the Director of Equalization uses to track a tract near Ethan; you'll see it in the viewer and on tax statements.
Open the official Davison 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.