No person, firm or corporation shall alter or cause or permit the alteration of any existing land grade or contour if such alteration will:
(a) Cause surface water to be unreasonably diverted onto or detained on abutting or nearby property;
(b) Unreasonably alter natural or existing drainage patterns; or
(c) Unreasonably increase or concentrate runoff of storm water onto abutting or nearby property.
(Ord. No. 80-16-1616)