Blog · October 14, 2026 · Wisconsin
Rock County Flood Zone Map, Wisconsin: a practical guide
Flood zones are set by FEMA, and checking one near Hanover takes a few minutes.
Main page: Rock County, WI GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Anderson, look at the Rock County flood zone map: FEMA's zone label affects insurance, building rules and resale. Covered here for the county: finding the address on FEMA's map, reading the zone codes, and matching it with the county parcel viewer for land near Evansville.
Checking the Rock County flood zone map step by step
Flood zones come from FEMA's Flood Map Service Center: type an address near Evansville, then open the map view for that panel. Rural land near Hanover with no street number can still be found: zoom in from Interstate 39 and click inside the land.
The viewer Rock County publishes
Begin with the Rock County ArcGIS parcel map; it maps each assessed parcel in the county, Shopiere included. If you only know roughly where the land is, pan along Interstate 39 until the lines appear, then click inside the one you want. For a tract near Shopiere, the record panel usually lists the owner of record, assessed acreage, the parcel number and in many cases the last transfer.
Reading A, AE and X
Closer to Clinton, A and V zones are Special Flood Hazard Areas, which FEMA defines as a 1% annual chance of flooding. With a lot near Hanover, a shaded X area is moderate risk, between the 1% and 0.2% annual chance floods; plain X, or C on older maps, is minimal risk.
Using it on a phone
The parcel map usually runs in a mobile browser, useful out on a road near Evansville, though signal can drop in rural spots. A saved image of the lot near Beloit and its lines helps when you meet an owner or agent.
Rock County in a few facts
Janesville is the county seat, where most land records are kept. You'll also find Beloit, Brodhead, Edgerton, and Evansville, where town lots give way to larger tracts. About 164,278 people live in Rock County (Census estimate, 2023) across about 718 square miles. Rock County was formed in 1839, which matters when you trace an old farm's title.
What to request from a seller
If you're looking near Edgerton, request for any Elevation Certificate before closing; an insurance quote early avoids surprises.
Where the recorded documents are
When the details count, request the recorded deed through the Register of Deeds; the viewer just points to it, whether the land is near Afton or elsewhere in the county. For a home near Fulton, have ready the book and page listed on the parcel record to skip a name search.
What the map can't tell you
With a lot near Fulton, acreage on the record is an assessed number; only a licensed surveyor can set the real lines on the ground. Records update in batches, so a recent sale near Evansville might lag behind.
Parcel lines plus flood zones
FEMA's map shows zones but not ownership, so open the Rock County ArcGIS parcel map next to see exactly which lot near Edgerton you're looking at.
When a parcel crosses a boundary
The county borders Boone County, IL, Winnebago County, IL, Dane County, Green County, and Jefferson County, all with their own assessor records for land near Edgerton. A tract near the line by Edgerton can show up across two assessors' files, so look at the neighboring map before you assume the acreage. In and around Clinton, our state page links each bordering county map for Wisconsin.
Beyond the mapped zones
Creeks and ditches near Brodhead aren't always studied in detail, so walk the land after rain. Wet ground around Edgerton is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
Insurance, lenders and building
In and around Beloit, get the Elevation Certificate if one exists: it compares the building to the BFE. Building or adding on near Shopiere in a mapped zone can trigger elevation rules; check with the county or town building office early.
How land is described here
Wisconsin uses the Public Land Survey System, which means a tract near Shopiere is described by section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Evansville odd-sized. Copy the legal description from the record for the parcel near Edgerton before you request a deed or survey.
Rock County: common questions
Is AE a high-risk flood zone for land near Brodhead?
In most cases, AE is a Special Flood Hazard Area with a published base flood elevation, which shapes building rules near Evansville.
How often are flood maps updated around Evansville?
In most cases, zones near Beloit can shift when FEMA updates a panel, so look at the panel date.
Is Zone X safe from flooding for land near Edgerton?
Short answer: Zone X near Janesville means moderate (shaded) or minimal (unshaded) mapped risk; FEMA notes that a large share of claims come from these areas.
Can I see flood zones on the county ArcGIS parcel map near Shopiere?
For land near Brodhead, some county viewers include a FEMA flood layer, but FEMA's own map is the official source.
What's the tax parcel number used for around Janesville?
It's the number the county real property listing office uses to track a tract near Janesville, and it's on the record panel and tax bills.
Open the official Rock County, WI 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.