Frequently Asked Questions (FAQ)

My property is located in Altadena. Due to the recent rains, my neighbor is constructing concrete drainage channels on his hillside slope which are pitched towards my driveway, which runs downhill and parallel to our property line. I'm afraid that during a deluge, my driveway will be overburdened with the additional runoff from this recently constructed drainage apparatus and flood my swimming pool and home. Are there specific codes and permits required to divert rain runoff to an adjacent property? The channels terminate less than 5 feet from our property line. Thank you.

Please contact the Regional Drainage and Grading Engineer for the San Gabriel Valley at (626) 574 0946 for questions regarding storm drainage from private property. A link to a Homeowners Guide for Flood, Debris, and Erosion Control is provided below for your information.

San Gabriel Valley District Office
125 South Baldwin Ave
Arcadia, CA
(626) 574 0941

  Homeowner's Guide for Flood, Debris, Erosion
BSD buildings safety plumbing mechanical electrical structural codes structures permits permitting plans blueprints ordinances built fences walls inspections occupancy heating ventilation conditioning energy zoning EDAPTS pools garages septic remodeling patios UBC IBC roofs heater plan check