Performance impact estimation method:
Performance impact estimation information:
The DAS HK incorporated extensive monitoring and surveys (rainfall, water levels, discharges, water quality parameters, ecological status of streams, catchment hydrogeology and infiltration potential etc.)
Hydrodynamic modeling of the sewer system, water bodies, artificial open channels, underground waters and elements of stormwater management was performed (MIKE Urban, MIKE11) and hydraulic capacity of the individual parts of the system as well as flooding frequency was assessed based on a 10-years rainfall data series. CSOs impacts were assessed with REBEKAII.
Paralelly, a groundwater flow model was created by Jacobs Consultancy.