(A) For proposed developments requiring either a building permit or grading plan approval, a drainage plan or a drainage element to the grading plan as required by the City Engineer shall be prepared by a civil engineer registered in the state and shall be approved by the City Engineer prior to the issuance of any building permit or prior to the approval of any grading plan.
(B) Unless otherwise approved by the City Engineer, the engineer for the developer or owner shall certify that:
(1) Surface water will not be diverted from one property to another over which water would not naturally flow.
(2) Storm water will not be gathered by artificial means and be discharged onto lower property in greater volume or concentration than water would naturally be discharged unless a natural drainage course or storm drain is available as an outlet.
(3) Concentration of surface water into a single channel will not be discharged onto lower property.
(4) Ditches or other artificial structures will not be constructed to drain water that accumulates in ponds or sumps for discharge onto lower property owned by others.
(5) There will be no obstruction to the flow of surface water from higher property that naturally drains across or onto lower property.
('64 Code, § 5-1.9.1) (Am. Ord. 653, passed 7-12-84)