All minor tributary and surface drainage channels located within the subdivision shall be improved in accordance with the standards set forth in the "Improved Drainage Channel" charts in Section 94-290, or other equivalent standards, as determined by the City Engineer. Sections on Chart No. 4 shall be used only for channels of minor tributaries which drain less than eighty (80) acres and which are designed as an integral part of the landscape of the area, so that maintenance of sodded slopes will be the responsibility of the property owners abutting the channel. All channels shall be designed to carry a one hundred (100) year maximum flood, shall be designed for self-cleaning and ease of maintenance, shall have sufficient hard surface along the flow line to prevent ponding of water, and shall have design characteristics of alignment, materials, or construction and cross-sectioned elements that will be hydraulically efficient and visually harmonious with the adjacent landscape.
(Code 1991, § 12-502)