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Roseville, CA Environmental Rules: Flood Zones (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

FEMA flood zone rules in Roseville, CA, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Permit required: Before any construction in a mapped flood hazard area
Administrator: Community Development Director
Governing map: FIRM dated September 28, 1989
Map on file at: City Engineer, 316 Vernon Street
Violation penalty: Infraction or misdemeanor, city attorney's discretion

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Roseville, CA.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Roseville, CA on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

Any construction or development within a mapped area of special flood hazard in Roseville requires a floodplain development permit issued in advance by the floodplain administrator, the city's community development director, under Municipal Code Chapter 9.80. The rule applies citywide wherever FEMA's Flood Insurance Rate Map, adopted September 28, 1989, designates special flood hazard or flood-related erosion areas.

A development permit shall be obtained before any construction or other development begins within any area of special flood hazard or areas of flood-related erosion hazard. Application for a development permit shall be made on forms furnished by the floodplain administrator and may include, but not be limited to: plans in duplicate drawn to scale showing the nature, location, dimensions, and elevation of the area in question; existing or proposed structures, fill, storage of materials, drainage facilities; and the location of the foregoing.

View official code

Full Breakdown

Chapter 9.80 (Flood Damage Prevention) applies to "all areas of special flood hazards and areas of flood-related erosion hazards within the jurisdiction of the City of Roseville" (§9.80.050). The areas are those the Federal Insurance Administration mapped in the Flood Insurance Study and Flood Insurance Rate Map (FIRM) dated September 28, 1989 and later revisions; the FIRM is kept on file at the city engineer's office, 316 Vernon Street (§9.80.060).

Before breaking ground, an applicant must obtain a development permit from the floodplain administrator, a role assigned to the community development director (§9.80.130). The application must show, at minimum, the proposed elevation of the lowest floor (including basement) in relation to mean sea level, the elevation to which any non-residential structure will be floodproofed, the certifications required under §9.80.150(D), and a description of any watercourse alteration or relocation (§9.80.120(A)-(D)).

The administrator reviews every permit to confirm state and federal permits are also in hand, that the site is reasonably safe from flooding, and that the project will not raise flood levels where a floodway has not yet been mapped (§9.80.150(A)). Where Chapter 9.80 conflicts with the flood-prone-area rules in Zoning Ordinance §19.18.040, whichever is more restrictive controls (§9.80.080).

Building or altering land in a flood hazard area without following the chapter is deemed a public nuisance and can be charged as an infraction or misdemeanor, at the city attorney's discretion, and the city may take further lawful action to stop or remedy the violation (§9.80.070).

Violations & Fines

Constructing, extending, converting or altering a structure in a mapped flood hazard area without a development permit, or violating any permit condition, is a public nuisance under §9.80.070. The city attorney may charge it as an infraction or a misdemeanor, and the city can pursue any other lawful remedy to stop the work or require correction, independent of the criminal or infraction case.

Frequently Asked Questions

Do I need a city permit to build in a Roseville flood zone?

Yes. Municipal Code §9.80.120 requires a floodplain development permit before any construction, fill, grading or other development begins in an area of special flood hazard. You apply to the floodplain administrator, the community development director, with scaled plans showing elevations, structures and drainage; building first and permitting later is not an option under this chapter.

Where does Roseville define which land is in a flood hazard area?

The city adopted the Federal Emergency Management Agency's Flood Insurance Study and Flood Insurance Rate Map dated September 28, 1989, plus later FEMA revisions, as the official boundary under §9.80.060. A copy is kept at the city engineer's office, 316 Vernon Street, and the floodplain administrator can interpret disputed boundary locations.

What happens if I build without a floodplain permit in Roseville?

The unpermitted work is declared a public nuisance under §9.80.070 and can be charged as an infraction or a misdemeanor, at the city attorney's discretion. The city can also take separate lawful action, such as requiring corrective work or halting construction, regardless of whether a criminal case is filed.

Sources & Official References

[1]Roseville Municipal Code Ch. 9.80 - Flood Damage Prevention

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All Roseville rules

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