Onsite Stormwater Detention Policy

Responsible Department - Engineering and Asset Management

 On-site Stormwater Detention Policy (79kb)


This policy details the safeguards enforced by Council to ensure that stormwater runoff generated by new developments does not adversely impact downstream properties for all storm events up to and including the 100-year ARI event.


This policy applies where:

  • A development increases the impervious area of a site
  • The existing drainage system is unable to accommodate an increase in stormwater discharge from the site