Grading & Drainage: Chino vs San Bernardino

Do I need a grading permit for a small backyard project?

If you're moving more than ~50 cubic yards of earth, disturbing more than 5,000 sq ft, or creating cuts/fills over a few feet in depth, yes. Smaller landscape regrading typically does not — but if drainage changes affect a neighbor, you can still face civil liability.

Can I drain my yard onto my neighbor's property?

No. Chino requires drainage plans to direct runoff to an approved outlet (street, storm drain, on-site detention). California Civil Code §831 and case law require 'reasonable use' of surface waters — you cannot concentrate or redirect runoff onto adjacent parcels.

Does Chino charge a drainage fee?

Yes. New development in master-planned areas pays drainage fees under the Drainage Master Plan financing program, which funds expansion of the city storm-drain system. Fees are calculated at building/grading permit issuance — contact Engineering at (909) 334-3253.

Who maintains the channel behind my house?

Master-planned channels like San Antonio Channel, Cypress Channel, and Chino Creek are typically San Bernardino County Flood Control District facilities. Smaller in-tract storm drains are city-maintained. Private drainage easements are the property owner's responsibility.

Do I need a grading permit for my San Bernardino backyard project?

If you move more than 50 cubic yards of dirt, cut or fill over 3 feet deep, or grade on slopes steeper than 3:1, a grading permit is required. Smaller landscaping work is typically exempt but must still maintain positive drainage and not harm neighbors.

Can my neighbor redirect runoff onto my property?

No. Under California drainage law (Keys v. Romley) adjacent owners must use reasonable care in modifying surface drainage. Concentrated runoff that causes damage can be remedied in Superior Court, and the San Bernardino Code Enforcement may enforce grading violations.