Environmental Rules in Rancho Cucamonga, CA (2026)
4 verified environmental rules for Rancho Cucamonga, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Rancho Cucamonga enforces the San Bernardino County MS4 stormwater permit prohibiting non-stormwater discharges to the storm drain. Construction sites over one acre need a state SWPPP and WDID number.
Rancho Cucamonga Stormwater Rules
Heavy RestrictionsErosion Control
Rancho Cucamonga requires erosion control plans for grading over 50 cubic yards per Municipal Code Title 19. Plans must include BMPs effective through the October 1 to April 30 rainy season.
Rancho Cucamonga Erosion Control Rules
Heavy RestrictionsFlood Zones
Rancho Cucamonga participates in the National Flood Insurance Program and enforces FEMA Special Flood Hazard Area rules in Alta Loma alluvial fan areas. New construction in Zone A requires elevation certificates.
Rancho Cucamonga Flood Zone Rules
Heavy RestrictionsGrading & Drainage
Rancho Cucamonga requires grading permits under Municipal Code Title 19 for any earthwork over 50 cubic yards or hillside excavation. Drainage plans must route runoff to approved outfalls without impacting neighbors.
Rancho Cucamonga Grading and Drainage Rules
Heavy RestrictionsLooking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Rancho Cucamonga city rules.
Environmental Rules in San Bernardino County →