Design of storm water detention facilities shall be based on a return period of one (1) time in one hundred (100) years. The storage volume and outflow rate shall be sufficient to handle storm water runoff from a critical duration storm, as defined herein. Rainfall depth-duration-frequency relationships and intensity-duration-frequency relationships shall be those given in Tables 5 and 5A.
(Ord. No. 1708, 6-13-07)