Cal. Code Regs. tit. 23, § 125 – Retaining Walls.

(a) Retaining walls within an adopted plan of flood control must comply with the following requirements:
1. (1) Retaining walls greater than three (3) feet in height must be designed by a licensed civil engineer.
2. (2) Retaining walls may be of reinforced concrete, concrete gravity section, or of equivalent material and durability.
3. (3) Retaining walls in the landside levee slope must have appropriate features that intercept seepage and prevent particle migration.

Note: Authority cited: Section 8571, Water Code. Reference: Sections 8606, 8609 and 8710, Water Code.

1. New section filed 9-30-96; operative 10-30-96 (Register 96, No. 40).