Areas within the jurisdiction of the city council subject to flood conditions, as established by the city manager, will not be considered for subdivision purposes, until adequate drainage has been provided; provided, however, that drainage facilities may be provided in compliance with the then-current regulations as established by the city council.
(2001 Code, sec. 10.1301)
(a) 
A report prepared by a licensed registered engineer shall accompany the preliminary plat. This study shall show the acreage draining into the subdivision, points of runoff concentration, areas subject to flooding, the method for draining the runoff through and away from the subdivision and other pertinent information as required by the city manager.
(b) 
Methods and data used for calculations of runoff shall be as required by the city manager.
(2001 Code, sec. 10.1302)