Blog · October 14, 2026 · California
Gridley Flood Zone Map, California: a practical guide
The zone on FEMA's map affects insurance, building and resale near Biggs.
Main page: Butte County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near Paradise, check the Gridley flood zone map: a mapped flood zone changes insurance, building rules and resale. What this Gridley guide covers: finding the address on FEMA's map, decoding A, AE and X, and confirming the outline on the county map.
Getting started with the Gridley flood zone map
Flood zones come from FEMA's Flood Map Service Center: search an address around Paradise, then open the map view for that panel. Vacant ground around Biggs is still easy to locate: zoom in from the nearest road and click inside the land.
Where the parcel data lives
Begin with the Butte County parcel viewer; it includes every assessed parcel from Chico to Oroville. For acreage around Paradise, type a street address, an owner's name or a parcel number, then pick the result to center the map on it. Near Biggs, the parcel card usually lists the owner of record, acreage on the tax roll, the parcel number and often a sale date.
Gridley, CA: the basics
Gridley is part of Butte County, California, which means parcel data comes from the county. Near Biggs, the municipality handles things like zoning, permits and utilities within town limits, and the county still keeps the parcel and deed records. Lots just outside the city limits toward Biggs generally falls under county rules, not municipal ones.
What the zone letters mean
Zone AE comes with a base flood elevation, and an unnumbered A zone has none; surveyors near Oroville use that number. Out toward Chico, minimal risk is not no risk: according to FEMA, many claims come from moderate- and low-risk areas.
Water near Oroville
Small streams around Oroville aren't always studied in detail, so look for water marks and debris lines. Marshy spots near Biggs can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
The paper trail behind a parcel
The map is an index, not the title: deeds, plats and easements for land near Paradise are filed with the County Recorder. If the land is near Oroville, use the book and page shown in the record panel so staff can find the deed fast.
Reading the legal description
California uses the Public Land Survey System, which means a tract near Chico is described by section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though real sections near Oroville vary in size. Write down the legal description for the tract near Paradise when you talk to a surveyor.
On site with the map
The parcel map usually runs in a mobile browser, useful out on a road near Biggs, though signal can drop in rural spots. A printout of the tract near Biggs keeps working without signal.
Getting answers from the right desk
Questions about value or the owner field for land near Oroville belong with the County Assessor, the office behind the parcel record. Questions about what you can build around Biggs go to planning, building or health offices, depending on whether the land is inside town limits.
Use the county map alongside FEMA
Where a floodplain cuts across acreage near Biggs, the location of the house or building pad decides a lot.
A short flood checklist
Ask the seller about past flood claims for the house near Biggs; getting a quote early keeps the budget honest.
Land on the county line
Butte County borders Colusa County, Glenn County, Plumas County, Sutter County, and Tehama County, all with their own assessor records. A tract near the line by Oroville may show up across two assessors' files, so open the neighboring map as well. For a parcel near Biggs, the Platbookmapper state page links every neighboring county map across California.
Insurance, lenders and building
If a building sits in a Special Flood Hazard Area and a federally regulated lender is involved, mandatory purchase rules apply where the community participates in the National Flood Insurance Program, which applies near Oroville as much as anywhere. New construction in a floodplain near Paradise often needs a floodplain permit; call the permitting office before you plan.
A quick look at the area
Oroville serves as the county seat, which is where the courthouse records live. You'll also find Biggs, Chico, and Paradise, where town lots give way to larger tracts. Roughly 207,172 people call Butte County home (Census estimate, 2023) on roughly 1,636 square miles. Features like Butte Sink National Wildlife Refuge are easy to spot when you zoom out from Chico.
Questions about the Gridley flood zone map
How often are flood maps updated around Paradise?
For most people, zones near Paradise can shift when FEMA updates a panel; check the effective date on the panel.
When is flood insurance required in Gridley?
Generally, for a building near Oroville 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.
Is AE a high-risk flood zone for land near Oroville?
Short answer: AE is a Special Flood Hazard Area with a published base flood elevation, so builders near Paradise design to that elevation.
What is a base flood elevation around Oroville?
The base flood elevation is the water level expected in the 1% annual chance flood; surveyors near Biggs use it often.
Is the parcel map a survey for land near Paradise?
The map near Chico is approximate, so a fence may sit off the line
Open the official Butte County, CA 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.