Cathedral City, CA Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Cathedral City, 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
- Development permit before any construction or other development
- Floodplain administrator
- The city engineer
- Flood maps
- FEMA Riverside County study dated August 28, 2008
- Floodway limit
- No base flood rise of more than one foot
- Appeals
- City Council under § 8.24.040(D)
- Penalty
- Misdemeanor under § 8.24.030(C)
Summary
In Cathedral City, California, every parcel inside a FEMA special flood hazard area needs a development permit from the city engineer before any construction, fill, or other development begins. The chapter adopts the August 28, 2008 Riverside County flood maps, and a violation is a misdemeanor.
A. Lands to Which This Chapter Applies. This chapter shall apply to all areas of special flood hazards within the jurisdiction of the city of Cathedral City. B. Basis for Establishing the Areas of Special Flood Hazard. The areas of special flood hazard identified by the Federal Emergency Management Agency (FEMA) in the "Flood Insurance Study (FIS) for Riverside County and All Incorporated Areas," dated August 28, 2008, with accompanying Flood Insurance Rate Maps (FIRMs) and Flood Boundary and Floodway Maps (FBFMs), dated August 28, 2008, and all subsequent amendments and/or revisions, are hereby adopted by reference and declared to be a part of this chapter. ... C. Compliance. No structure or land shall hereafter be constructed, located, extended, converted, or altered without full compliance with the terms of this chapter and other applicable regulations. Violation of the requirements (including violations of conditions and safeguards) shall constitute a misdemeanor.
Full Breakdown
Chapter 8.24 of the Cathedral City Municipal Code applies to all areas of special flood hazards within the jurisdiction of the City of Cathedral City, Riverside County. Section 8.24.030(B) adopts the FEMA Flood Insurance Study for Riverside County and All Incorporated Areas, dated August 28, 2008, with its Flood Insurance Rate Maps and Flood Boundary and Floodway Maps. Copies are on file at the Engineering Department, 68-700 Avenida Lalo Guerrero. A special flood hazard area is land with a one percent or greater chance of flooding in any given year, shown as zone A, AO, A1-A30, AE, A99, or AH.
The city engineer serves as floodplain administrator under § 8.24.040(A). A development permit is required before any construction or other development, including manufactured homes, inside a mapped area. The application must include plans in duplicate showing structures, utilities, grading and fill, the regulatory floodway where it applies, base flood elevation information, and the proposed lowest floor elevation. A nonresidential floodproofed building needs a certification from a registered civil engineer or architect.
Floodways get the tightest control under § 8.24.050(F). Until a regulatory floodway is adopted, no new construction, substantial development, or fill is permitted in zones A1-30 and AE unless the cumulative effect will not raise the base flood water surface elevation more than one foot at any point in the city. Inside an adopted regulatory floodway, encroachments are prohibited unless a registered civil engineer certifies that flood levels will not increase. Subdivisions and other proposed development larger than fifty lots or five acres, whichever is less, must identify the flood hazard areas and base flood elevations on the plans.
Substantial improvement means work costing fifty percent or more of a structure's market value. Anyone challenging a floodplain administrator decision appeals to the City Council under § 8.24.040(D). The City Council also decides variances under § 8.24.060, which bars them inside a regulatory floodway if flood levels would rise.
Violations & Fines
Under § 8.24.030(C), building, altering, or locating a structure or land use in a flood hazard area without full compliance with Chapter 8.24 is a misdemeanor, and the City Council can take any lawful action needed to prevent or remedy the violation. A structure that lacks the required elevation certificate or other compliance documents is presumed to be in violation until the paperwork is supplied.
Frequently Asked Questions
Do I need a permit to build in a flood zone in Cathedral City?
Which maps decide whether my property is in a Cathedral City flood zone?
Can Cathedral City grant a variance from the flood rules?
What happens if someone violates the floodplain chapter in Cathedral City?
Sources & Official References
Other rules in Cathedral City
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Flood Zones in Nearby Cities
How other cities in Riverside County handle flood zones.