Blog · October 14, 2026 · Wyoming
Rock Springs Flood Zone Map, Wyoming: a practical guide
Flood zones are set by FEMA, and checking one near Superior takes a few minutes.
Main page: Sweetwater County, WY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Granger? The Rock Springs flood zone map tells you whether it sits in a FEMA flood zone, and no account is needed. What this Rock Springs guide covers: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Sweetwater County parcel viewer.
Getting started with the Rock Springs flood zone map
Start with FEMA's Flood Map Service Center: type an address near Wamsutter, and pick the FIRMette or map view. A tract near Granger without an address can still be found: zoom in from the nearest road then click the parcel area.
Getting to the right map
The official parcel map for this area is the Sweetwater County parcel viewer, and anyone can open it without signing up. For a parcel near Superior, enter a street address, an owner's name or a parcel number, and the viewer zooms to the match. For a home near Superior, a pop-up or side panel usually lists the owner of record, assessed acreage, the parcel number and often a sale date.
City limits and county records
Rock Springs sits in Sweetwater County, Wyoming, which means parcel data comes from the county. Around Green River, the municipality handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Lots just outside the town limits near Wamsutter generally falls under county rules, not municipal ones.
Using it on a phone
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Wamsutter, but coverage can be spotty out of town. A saved image of the lot near Bairoil and its lines keeps working without signal.
Next door to Sweetwater County
Sweetwater County touches Moffat County, CO, Daggett County, UT, Summit County, UT, Carbon County, and Fremont County; every one of them runs a separate parcel map. Acreage along the edge near Wamsutter can show up in two county records, so look at the neighboring map before you assume the acreage. The Platbookmapper state page lists every bordering county map across Wyoming.
Deeds, plats and who keeps them
For anything that matters, request the recorded deed from the County Clerk; the parcel map near Wamsutter only summarizes it. Older tracts near Bairoil can go back through many deeds, so a title company earns its fee if money is changing hands.
Getting answers from the right desk
Questions about value or the owner field for land near Bairoil go to the County Assessor, since that office keeps the assessment data. Building or septic questions for a lot near Wamsutter are for the local planning and health departments, depending on whether the land is inside town limits.
Low spots and local drainage
Creeks and ditches near Superior may not have detailed mapping, so ask neighbors about past flooding. Marshy spots near Bairoil can limit building too; check the National Wetlands Inventory mapper for a first look.
What the zone letters mean
Zone AE comes with a base flood elevation, and an unnumbered A zone has none; that elevation drives building rules near Wamsutter. For property near Wamsutter, a low-risk label isn't a guarantee: FEMA notes that many claims come from moderate- and low-risk areas.
Use the county map alongside FEMA
Where a floodplain cuts across acreage near Superior, what matters is where the building sits.
Questions to ask before you buy
Ask the seller for any Elevation Certificate for the house near Bairoil; an insurance quote early keeps the budget honest.
Insurance, lenders and building
For a tract near Granger, get the Elevation Certificate if one exists: it compares the building to the BFE. Remodeling a house in a zone near Bairoil can trigger elevation rules; call the permitting office before you plan.
Getting your bearings
Green River serves as the county seat, home to the main records offices. You'll also find Superior, Bairoil, and Granger. Around 41,249 people live in Sweetwater County (Census estimate, 2023) across roughly 10,427 square miles. Sweetwater County was organized in 1867, which matters when you trace an old farm's title. Landmarks such as Ashley National Forest are easy to spot when you zoom out from Wamsutter.
Frequently asked
Is AE a high-risk flood zone around Green River?
It depends, but AE is a Special Flood Hazard Area with a published base flood elevation, so builders near Superior design to that elevation.
Where do I find the BFE for a lot near Bairoil?
For most people, a BFE near Superior tells builders how high the lowest floor should be; local rules may require building above it.
When is flood insurance required near Superior?
Good question; for a building near Green River in an A or V zone with a federally backed or regulated mortgage, it's generally required, in communities that take part in the NFIP.
Why did my flood zone near Wamsutter change?
Good question; zones near Green River can shift when FEMA updates a panel; your community is notified before changes take effect.
What's the tax parcel number used for near Wamsutter?
The parcel ID identifies one tax parcel near Granger, and it's on the record panel and tax bills.
Open the official Sweetwater County, WY 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.