Helping to restore water quality
To help water officials regain the good water quality of the Yamuna River, we conducted an Integrated Water Resources Management (IWRM) and water quality modelling study. As part of this study, we developed a Decision Support System (DSS) that uses baseline information on:
- land use
- river flow
- water quality
- wastewater discharges
- less water intensive crops
For this project, we used MIKE HYDRO Basin, MIKE 11 (now MIKE HYDRO River) and MIKE ECO Lab (part of our MIKE Powered by DHI software) to develop the DSS. We used MIKE HYDRO Basin to describe the catchment’s hydrology, examine abstractive uses (such as irrigation and domestic water use) and their return flows, and estimate pollution load. We used MIKE 11 and MIKE ECO Lab to conduct river hydrodynamic and water quality modelling.
Our DSS integrates the mathematical models of system processes with decision variables to arrive at certain conclusions or decisions. It can take into account different wastewater loading and water availability situations – as well as management options and future changes – to predict water quality scenarios. Utilising the DSS, we generated water quality scenarios based on different actions in order to:
- control wastewater discharges to the basin
- increase the availability of water resources in the basin by using less water intensive crops
The scenarios will enable government planners to make sound decisions in order to help restore the quality of the Yamuna River and manage its pollution levels.