All properties are responsible to properly manage drainage on their property by 1) maintaining runoff on their own property, 2) conveying runoff out to the street, or 3) conveying runoff to a recorded drainage easement that is in favor of the property. Sloping lots will require special grading attention, including V-ditches, swales, and rock/masonry walls. Slope cannot be steeper than 3:1 (three horizontal to one vertical) unless allowed by a stamped geotechnical report. Rock/masonry walls are required to be installed when slopes exceed 3:1.

When installing landscaping, fences, rock/masonry walls, etc., all required v-ditches, swales and berms must be reinstalled to return the drainage flow back to its original state. No alteration to the land of any kind can obstruct or alter the path of flow of any drainage easement used in the design of the subdivision to drain your lot and neighboring lots. See Typical Drainage Designs.