Environmental Rules in Corona, CA (2026)
4 verified environmental rules for Corona, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Corona regulates stormwater discharge under Municipal Code Chapter 13.32 and the Santa Ana Regional Water Quality Control Board MS4 Permit. Property owners and contractors must prevent pollutants from entering the storm drain system, which discharges to Temescal Wash and ultimately the Santa Ana River.
Corona Stormwater Management
Some RestrictionsErosion Control
Corona requires erosion and sediment control measures on all grading and construction sites under Municipal Code Title 15 and the California Building Code. Hillside areas in south Corona near the Cleveland National Forest face stricter requirements due to steep slopes and wildfire-burn scar runoff potential.
Corona Erosion Control Requirements
Some RestrictionsFlood Zones
Corona participates in the National Flood Insurance Program and enforces floodplain management under Municipal Code Chapter 16.36. Major flood-prone areas include the Prado Basin in the northwest, Temescal Wash, and tributaries draining the Cleveland National Forest. Construction in Special Flood Hazard Areas requires elevation certificates and floodplain development permits.
Corona Flood Zone Regulations
Heavy RestrictionsGrading & Drainage
Corona regulates grading and site drainage under Municipal Code Title 15 and California Building Code Appendix J. Grading permits are required for any project moving 50 or more cubic yards or altering drainage patterns. All sites must direct runoff to approved drainage systems without impacting neighbors.
Corona Grading and Drainage Standards
Some RestrictionsLooking for Riverside County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Corona city rules.
Environmental Rules in Riverside County →