(A) All required yards shall be maintained at a slope to cause the flow of surface waters to existing drainage systems, without causing any ponding or flooding upon any adjacent lands resulting from any change in elevation; provided, however, this shall not prevent the grading of a yard into landscaped depressions or terraced areas where adequate and safe means for the disposal of surface waters are constructed and maintained.
(B) When a new building is constructed or located on a vacant lot between 2 existing buildings, the yard around the new building shall be graded to meet the existing grades and permit runoff of surface waters without encroachment onto adjacent properties, except as the runoff follows drainage patterns as they exist.
(Ord. 99, passed 11-18-1996, § 22.05)