Blog · October 14, 2026 · California
Lassen County Flood Zone Map in California
Look up any Lassen County address on FEMA's flood map, read the zone, and match it to the parcel record for land around Susanville.
Main page: Lassen County, CA GIS & Parcel Viewer (official map link, Lassen County facts and neighboring maps).
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Land along the creek bottoms near Janesville and the flats outside Susanville are where a Lassen County flood zone map lookup matters most. FEMA's free Flood Map Service Center and the Lassen County parcel viewer answer it together.
Next: FEMA's search tool, the zone labels you'll see for Lassen County, and how the parcel record confirms which tract you're on.
How to check the Lassen County flood zone map
Open the FEMA Flood Map Service Center and type a county street address, say one in Susanville. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Susanville location, which you can view or download. For an irregular lot near Clear Creek, the National Flood Hazard Layer viewer is easier to use, so you can see whether the shading reaches a house near Clear Creek. Switch to the Lassen County ArcGIS parcel map and find the same parcel near Clear Creek. Laying the county parcel outline beside the FEMA shading lists whether a homesite near Clear Creek sits above or inside the zone.
Step one: the free Lassen County viewer
Lassen County publishes its parcels on the Lassen County ArcGIS parcel map, which runs on an Esri ArcGIS web map, free to use for a lot in Bieber or a parcel near Clear Creek. Use the search box for an address in Bieber or a parcel number, or simply zoom in and click a parcel near Clear Creek. Bookmark our Lassen County page too; it tracks the official California link if it moves and lists the maps around Bieber.
Reading the zones on a Lassen County flood map
For a lot in Susanville, the label matters more than the color: A and V zones are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Zone AE near Clear Creek means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. If a Lassen County parcel lists shaded Zone X, it sits in the moderate band between the 100-year and 500-year floods. Unshaded X (or C) on the Lassen County panel means minimal risk.
Low ground and small streams around Susanville
Small streams and ditches near Susanville may not be studied in detail, which is why it's worth walking the ground after a heavy rain.
A short buyer checklist for Bieber
For a house near Susanville, ask the seller for any elevation certificate on file and the current flood insurance declarations page. Then call an insurance agent who writes policies around Bieber and get a quote using the zone and the county parcel address.
Floodways and restudies near Clear Creek
The FIRM panel for Lassen County carries an effective date; if it's old, ask the county floodplain office whether new maps for land near Clear Creek are in progress. If a parcel near Clear Creek lists a hatched floodway, expect tight limits on fill and new structures from the county floodplain office.
Flood insurance and building rules in Lassen County
Insurance is the practical stake for a Lassen County buyer. If a barn or house outside Susanville sits in a Special Flood Hazard Area and secures a loan from a federally regulated or insured lender, federal rules call for flood insurance, as long as Lassen County or the town participates in the NFIP. Outside the A zones around Clear Creek, coverage is optional; pricing a policy for land near Clear Creek is still worth a call. If a building near Clear Creek sits above the flood line, FEMA's LOMA process allows a review; a surveyor near Clear Creek can supply the elevation data. Building or filling inside a mapped zone near Susanville frequently requires a permit and an elevation check, so call the county or the town office in Susanville before work starts.
Lassen County flood zones questions
How do I challenge a flood zone for a lot in Susanville?
FEMA reviews requests such as a LOMA for Lassen County properties; start with an elevation certificate.
Is flood insurance required for a Zone X lot in Susanville?
For a Zone X house near Bieber, federal rules do not require flood insurance; buying it is still a choice worth pricing.
What does BFE mean on the flood map for Susanville?
For a Lassen County property in Zone AE, the base flood elevation marks how high the 100-year flood is expected to rise; elevation certificates in Lassen County are measured against it.
Where do I get an elevation certificate in Lassen County?
Hire a licensed surveyor or engineer who works in Lassen County; ask the local floodplain office first in case one exists.
What does Zone AE mean on a Lassen County flood map?
Yes, a parcel near Bieber in Zone AE is high risk: a 1-percent-annual-chance floodplain where FEMA lists a base flood elevation.
Open the official Lassen County, CA parcel map Lassen 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.