Environmental Rules in Iron County, UT (2026)
4 rules for unincorporated Iron County, Utah.
Verified from official government sources
Stormwater Management
Iron County has no freestanding stormwater ordinance; its drainage requirement lives inside the flood damage prevention chapter. Section 15.12.160(D)(3) requires every subdivision proposal to include adequate drainage to reduce exposure to flood damage, and Section 15.12.160(E) caps how much any new development can raise the base flood's water surface elevation.
Subdivision Drainage Rules in Iron County
Light RestrictionsIron County Code §§ 1.08.010(A), 1.08.010(C), 15.12.160(D)(1), 15.12.160(D)(3), 15.12.160(D)(4), 15.12.160(E)
A.Any person violating any of the provisions or failing to comply with any of the mandatory requirements of the ordinances of the county shall be guilty of an infraction unless the violation is made a misdemeanor by ordinance. ... C.Any person convicted of an infraction for violation of an ordinance of the county is punishable by a penalty of a fine of not more than seven hundred fifty dollars....
Flood Zones
Iron County requires a development permit before any construction or development begins in an area of special flood hazard, under Section 15.12.110(A). The chapter applies to all areas of special flood hazard in the county's jurisdiction per Section 15.12.050, and the mapped areas trace back to the Flood Insurance Study for the County of Iron, dated July 17, 1986.
Floodplain Development Rules in Iron County
Some RestrictionsIron County Code §§ 1.08.010(A), 1.08.010(C), 15.12.050, 15.12.060, 15.12.110(A)
A.Any person violating any of the provisions or failing to comply with any of the mandatory requirements of the ordinances of the county shall be guilty of an infraction unless the violation is made a misdemeanor by ordinance. ... C.Any person convicted of an infraction for violation of an ordinance of the county is punishable by a penalty of a fine of not more than seven hundred fifty dollars....
Defensible Space
Iron County adopted the International Urban Wildland Interface Code under Section 8.24.010, and its zoning ordinance separately requires wind, solar, geothermal and data-center energy facilities to provide defensible space for fire protection under that adopted code, reflecting wildfire risk across unincorporated Iron County's Escalante Desert and forested areas.
Wildland-Urban Interface Defensible Space, Iron County, UT
Some RestrictionsIron County Code §§ 8.24.010, 17.34.040(B)(10)
Iron County adopts the International Urban Wildland Interface Code, with the amendments identified in R652-122 of the Utah Administrative Code as currently set forth or as amended in the future by the Division of Forestry, Fire, and State Lands, unless specifically excepted by amendment to the ordinance codified in this chapter. ... 10.Fire Protection. ... All wind energy systems shall have a d...
Flood Elevation Requirements
New or substantially improved residential structures in an Iron County flood hazard area must have the lowest floor, including any basement, elevated to or above the base flood elevation under Section 15.12.170(A)(1). Inside an AO or AH zone on the Flood Insurance Rate Map, Section 15.12.170(A)(2) instead measures from the highest adjacent grade, requiring at least two feet of clearance when the map lists no specific depth number.
Base Flood Elevation Rules in Iron County
Some RestrictionsIron County Code §§ 1.08.010(A), 1.08.010(C), 15.12.170(A)(1), 15.12.170(A)(2)
A.Any person violating any of the provisions or failing to comply with any of the mandatory requirements of the ordinances of the county shall be guilty of an infraction unless the violation is made a misdemeanor by ordinance. ... C.Any person convicted of an infraction for violation of an ordinance of the county is punishable by a penalty of a fine of not more than seven hundred fifty dollars....
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