Lehi, UT Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Lehi, UT, 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
- Floodplain Development Permit
- Administrator
- City Stormwater Engineer
- Max fine
- $1,000 per violation
- Max jail term
- 180 days
- Floodway rise limit
- 1.00 foot without CLOMR
- Chapter adopted
- March 24, 2026
Summary
Lehi requires a Floodplain Development Permit for any construction, fill, or alteration within a FEMA-mapped special flood hazard area. The Stormwater Engineer serves as Floodplain Administrator and reviews every application before work can begin.
A. Lands to Which This Section Applies. This chapter shall apply to all areas of special flood hazard identified by FEMA within the jurisdiction of Lehi City. ... C. Establishment of Development Permit. A Floodplain Development Permit shall be required to ensure conformance with the provisions of this chapter. ... J. Penalties for Noncompliance. ... 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 provisions of this chapter by failure to comply with any of its requirements ... shall constitute a ... misdemeanor. Any person who violates this chapter or fails to comply with any of its requirements shall be guilty of a Class B Misdemeanor and shall upon conviction thereof be fined not more than $1000.00 or imprisoned for not more than 180 days, or both, for each violation assessed daily, and in addition shall pay all costs and expenses involved in the case.
Full Breakdown
Chapter 12-D of the Lehi City Development Code, adopted March 24, 2026, applies to all areas of special flood hazard identified by FEMA within Lehi City limits, using the current Flood Insurance Rate Maps (FIRM), Flood Boundary-Floodway Maps, and any FEMA revisions adopted by reference. C establishes that a Floodplain Development Permit is required to ensure conformance with the chapter before any structure, recreational vehicle, manufactured home, or land use is located, altered, or changed within a mapped hazard area. A and reviews, approves, or denies every development permit application, reviews site plans for safety from flooding, maintains public floodplain records including elevation certificates, and interprets disputed SFHA boundary lines.
00 foot at any point, absent a higher adopted standard. A property owner who alters a watercourse or changes floodplain boundaries must notify FEMA with a Letter of Map Revision within six months of project completion and cover all related processing fees. D, this chapter is treated as a floor: where it conflicts with another chapter, easement, or deed restriction, whichever is more restrictive controls.
Violations & Fines
Building or altering land in a mapped special flood hazard area without a Floodplain Development Permit is a Class B Misdemeanor under Section 12-D.030.J, punishable by a fine of not more than $1,000 or up to 180 days in jail, or both, with each day of violation assessed separately, plus all city costs and expenses of the case. The Floodplain Administrator may also issue a written stop-work order under Section 12-D.030.I requiring cited work to cease immediately.
Frequently Asked Questions
Do I need a city permit to build in a Lehi flood zone?
What happens if I build without the permit?
Who decides where the flood hazard boundary sits?
Sources & Official References
Other rules in Lehi
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Flood Zones in Nearby Cities
How other cities in Utah County handle flood zones.