WSU Division

Water Supply, Sanitation and Urban Water Management Division

Integrated Water Resources Management (IWRM)    

IWM has achieved a leading position within the field of integrated management of land and water resources, and provides comprehensive expertise together with a range of decision support tools to understand and simulate a variety of hydrological aspects ranging from broad-scale river basin issues to detailed hydrological and hydrodynamic investigations.  Projects often require integration of various aspects, such as conjunctive use of ground water and surface water, water quantity and quality, water uses, industrial water management and integration of the natural systems into human (political and institutional) systems. In the recent years IWM has contributed to development of scenarios, visions and actions within the so-called Vision and Framework for Action process through participation in Global Water Partnership and regional collaborations. This approach consists of a comprehensive set of analysis steps, supported by mathematical tools for the analysis of natural resource systems in a socio-economic context. Using this approach IWM supports water, river and floodplain managers worldwide in structuring complex decision-making processes and provide technical know-how for effective evaluation of planning alternatives. Information management systems, decision support systems and simulation models are important tools in this respect. Services would include:

  • Water resources assessment and management
  • Master planning and policy development
  • Water supply and demand assessment
  • River Basin management
  • Environmental impact analysis

 Wetland and lakes management (WeLkM)

Detailed studies of wetland and lakes require a unique integrated hydrological approach.  Feasibility studies of alternative protection measures require analysis based on multiple criteria.  IWM would offer broad and integrated service as well as models to be used for optimisation of wetland management taking into account water balance, retention of pollutant and biodiversity/nature conservation by applying fully distributed analytical tools; outputs would include:

  • Optimised operation rules
  • Interaction between groundwater and the surface water bodies (i.e. drawdowns caused by groundwater withdrawals), 
  • Land erosion due to water logging and waves mitigated,
  • Effects of land use changes on runoff patterns (e.g. deforestation)
  • Soil – water processes analysed.
  • By mapping flood extent and performing a statistical evaluation of flood duration, flood frequency, flood depth, groundwater table, and root zone water content the environmental and ecological impacts are assessed.

Urban Water Management (UWM)  

The challenge of providing quality water to our communities and also serve the cities with efficient drainage and waste water systems is increasingly getting larger as our cities grow and the water with sufficient quality is getting more scarce. Urban flooding, combined or separate sewer overflows, treatment processes and receiving water impact are high priority issues in most countries. IWM offers advanced solutions within a number of topics related to urban drainage including flood risk assessment and radar based rainfall forecasts. Many of the services are based on the use of MOUSE - DHI’s system for analysis of urban drainage networks.

IWM do also provide services related to water supply networks, including analysis of pressure zoning, and water quality aspects. These services often make use of MIKE NET, the DHI Software product for water supply networks.

Services would encompass the following:

  • Water supply
  • Urban drainage and flooding
  • Waste water collection systems
  • Integrated catchment planning
  • Municipal and industrial waste water treatment
  • Real time control, operation and management
  • Radar rainfall monitoring and forecast
  • Flow monitoring and water quality sampling and analysis.

Water Quality Investigation (WQI)        

Understanding of the level of water quality parameters is essential for the conservation of environment including drinking, irrigation, fisheries and recreation. During recent days IWM has acquired sufficient skill in monitoring the following water quality parameter for different studies.

  • Salinity
  • Biochemical Oxygen Demand (BOD)
  • Chemical Oxygen Demand (COD)
  • Dissolved Oxygen (DO)
  • Ammonia (NH3), Nitrate (NO3)
  • Lead (Pb), Chromium (Cr)
  • Mercury (Hg)
  • Phosphate (PO4)
  • Coliforms
  • Turbidity