Grading & Drainage: Long Beach vs Pomona
How do grading & drainage rules compare between Long Beach, CA and Pomona, CA?
Long Beach and Pomona have similar restriction levels.
Long Beach, CA
Los Angeles County
Long Beach requires grading plans to incorporate drainage quality controls. Minimum storm drain size is 24 inches. The city uses a 10-year storm peak flow threshold for drainage facility requirements.
View full Long Beach rules →Pomona, CA
Los Angeles County
Pomona requires grading permits for earthwork exceeding thresholds. Block wall and fencing plans must be consistent with the grading plan. Drainage must be directed away from neighboring properties.
View full Pomona rules →Key Facts Comparison
| Fact | Long Beach | Pomona |
|---|---|---|
| Min Drain Size | 24 inches | - |
| Design Storm | 10-year peak flow | - |
| Grading Plans | Must address drainage quality | - |
| Review | Public Works Department | - |
| Permit | - | Grading permit required |
| Plans | - | Must include drainage provisions |
| Fencing | - | Must be consistent with grading plan |
| Code | - | Pomona Development Code / Building Code |
Highlighted rows indicate differences between cities.
Long Beach FAQ
Do I need a grading permit?
Generally required for earth-moving over 50 to 100 cubic yards or changes to existing drainage patterns. Small landscaping projects are usually exempt.
My neighbor changed their grading and water flows onto my property. What can I do?
Contact Long Beach code enforcement. Redirecting drainage onto neighboring properties violates most municipal codes. The neighbor may be required to restore proper drainage.
Pomona FAQ
Do I need a grading permit?
Generally required for earth-moving over 50 to 100 cubic yards or changes to existing drainage patterns. Small landscaping projects are usually exempt.
My neighbor changed their grading and water flows onto my property. What can I do?
Contact Pomona code enforcement. Redirecting drainage onto neighboring properties violates most municipal codes. The neighbor may be required to restore proper drainage.
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