Any person desiring to divert waters at any point along the storm drains of the city shall make application in writing to the Council for permission so to do, and the application shall be accompanied with a sketch showing in what manner the applicant desires to make such diversion of water. All applications shall be referred to the City Engineer for his or her investigation, and if approved by him or her, the application may be granted by the Council; provided, that before any permit is granted to any person to divert waters from any part of the storm drain system, or gutters or drains upon the public highways of the city connected therewith, the applicant shall sign an agreement with the city which shall provide in substance that such applicant claims no rights in the storm drains or the waters flowing therein except under the license of the city; that the city disclaims all responsibility for the maintenance of any flow of water whatever at the point of diversion; and that the license to divert waters is revocable at any time upon 30 days notice by the city.
(`78 Code, § 13.16.020.)