(A) The drainage system for new developments or redevelopments shall be designed to control the peak rate of discharge from the total property under development for the two-year, 24-hour, ten-year, 24-hour, and 100-year, 24-hour events (three recurrence interval events to consider) to pre-project levels which will not cause an increase in flooding or channel instability downstream when considered in aggregate with other developed properties and downstream drainage capacities.
(B) Where a detailed hydrologic or hydraulic model exists, release rates shall be established and incorporated as part of this chapter.
(Ord. passed - -)