Blog · October 14, 2026 · Wyoming
Niobrara County Flood Zone Map, Wyoming: a practical guide
The zone on FEMA's map affects insurance, building and resale near Manville.
Main page: Niobrara County, WY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near Van Tassell, look at the Niobrara County flood zone map: the zone on that map shapes insurance, building rules and resale. This Niobrara County guide covers: finding the address on FEMA's map, reading the zone codes, and pairing it with the Niobrara County ArcGIS parcel map.
Checking the Niobrara County flood zone map step by step
If you'd rather pan and zoom, use the National Flood Hazard Layer viewer, which draws the zones over aerial imagery, whether the land is near Lusk or elsewhere in the county. A tract near Lusk without an address can still be found: zoom in from US Route 85 then click the parcel area.
The free map to start with
Begin with the Niobrara County ArcGIS parcel map; it covers every assessed parcel in the county, Riverview included. When a rural tract has no street number, pan along US Route 85 and click the parcel itself, and that holds around Riverview too. For land near Riverview, copy the parcel ID while you have it open; each office in the county uses it to find the file.
Places you'll see on the map
Lusk is the county seat, which is where the courthouse records live. You'll also find Manville, Van Tassell, Lance Creek, and Keeline. Around 2,354 people live in Niobrara County (Census estimate, 2023) across about 2,626 square miles. Niobrara County was formed in 1911, which matters when you trace an old farm's title.
Getting answers from the right desk
Questions about value or the owner field for land near Keeline belong with the County Assessor, which maintains the tax roll. Zoning, permits and septic questions near Van Tassell go to planning, building or health offices, and the answer depends on jurisdiction.
What the map can't tell you
With a lot near Manville, acreage on the record is a tax-roll number; just a licensed surveyor can set the real lines on the ground. If you're looking near Lance Creek, records update in batches, so a deed recorded last month can take weeks to appear.
Reading the legal description
Wyoming is laid out under the Public Land Survey System, which means a tract near Lance Creek is described by section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though corrections make some sections near Van Tassell odd-sized. Write down the legal description for the tract near Manville before you request a deed or survey.
Questions to ask before you buy
For acreage around Riverview, request whether the home has flooded before closing; getting a quote early avoids surprises.
Reading A, AE and X
Zone AE carries a published BFE, and an unnumbered A zone has none; surveyors near Lance Creek use that number. If you're looking near Keeline, a shaded X area marks moderate flood hazard, roughly the 100- to 500-year range; plain X, or C on older maps, is minimal risk.
Water near Lance Creek
Small streams around Riverview may not have detailed mapping, so walk the land after rain. Wetlands near Lusk can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
Backing up the map with records
Closer to Keeline, the map is an index, not the title: deeds, subdivision plats and easements for parcels in the county sit with the County Clerk. Near Keeline, bring the document number shown in the record panel so staff can find the deed fast.
Lining it up with the parcel map
When the zone clips a corner of a lot near Van Tassell, what matters is where the building sits.
Land on the county line
Niobrara County touches Sioux County, NE, Custer County, SD, Fall River County, SD, Converse County, and Goshen County, and each of those keeps its own parcel map. Acreage along the edge near Riverview may show up in two county records, so look at the neighboring map too. If the land is near Lusk, the Platbookmapper state page links each neighboring county map across Wyoming.
Lenders and permits
Near Van Tassell, get the Elevation Certificate if one exists: it compares the building to the BFE. Remodeling a house in a zone near Keeline often needs a floodplain permit; ask the local floodplain administrator before you plan.
Quick answers
How do I get a property removed from a flood zone around Van Tassell?
For most people, you can ask FEMA for a LOMA if surveyed elevations show the building near Lance Creek is above the BFE, and lenders accept the result.
Do I need to worry about flooding in Zone X around Lance Creek?
Short answer: X zones around Lance Creek are lower risk, not no risk; many owners near Lusk buy coverage anyway.
Why does the BFE matter near Riverview?
Closer to Lance Creek, the base flood elevation is the water level expected in the 1% annual chance flood, and an Elevation Certificate compares the building to it.
Can I see flood zones on the Niobrara County ArcGIS parcel map?
For land near Lusk, some county viewers include a FEMA flood layer, though it can lag behind FEMA's current panels.
Can I settle a boundary dispute with the map near Lance Creek?
In and around Lusk, parcel lines are tax drawings, not surveys, so a fence may sit off the line
Open the official Niobrara 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.