Facilities for the control of drainage and flood waters are established as follows:
(A) The minimum design for facilities which control flood water generated within a subdivision or flood water crossing or flowing into a subdivision shall be based on a storm frequency of once in ten years. Hydrology calculations shall be submitted for approval to the City Engineer.
(B) The use of the streets for flood control and drainage purposes may be prohibited by the Planning Commission on the recommendation of the City Engineer.
(C) When the use of streets is permitted for flood control and drainage purposes, the ten-year frequency design discharge shall be contained between the curbtops and the 100-year frequency design shall be contained within the right-of-way. In the event eight of these conditions are exceeded, additional adequate flood control facilities must be provided.
(1994 Code, § 16.16.100) (Ord. 78-101, passed - -1978; Ord. 81-104, passed - -1981)