Overland flow occurs when uncontrolled stormwater enters the property or development site and runs through the site to a downstream area.  Overland flood analysis is required to assess the magnitude of runoff and identify measures to safely convey the runoff through the site.

HydroStorm Consulting can assist in undertaking overland flow analysis using hydrologic and hydraulic modelling as per the requirements of the Council or other consent authority. We have successfully undertaken such analysis and provided effective solutions for managing overland flow through the site.  We liaise with the client to offer various solutions for managing the overland flow issues and then facilitate the acceptance of the solution by the Council through negotiations.
Our services include:

  • Establishing overland flow behaviour for the site using hydrologic and hydraulic modelling
  • Liaison with Council
  • Overland flow management option development
  • Supporting DA process through meetings and appropriate reporting