Real-time data update through a user-friendly web application
To better manage the water resources in Xin’an River Basin, numerical models and a decision support system were developed using MIKE software. Two lumped hydrological models – the Three Water Sources Xin’anjiang Model (developed by Prof. Renjun Zhao, Hohai University) and a MIKE 11 NAM model – are being used to analyse the water availability in the catchment.
Both models feed into a MIKE HYDRO Basin model. This water balance model analyses the water supply and water demands for the entire Xin’an River Basin. The water consumption of various industries is considered, and the FAO irrigation model is used to assess the long-term daily irrigation water demand. Two scenarios are simulated to assess the impact compared to the base year: a do-nothing scenario and an active planning scenario.
Both hydrological models are also coupled to MIKE 11, which simulates the river flow. This helps assess the impact of different scenarios on the environmental flow and flood risk along the river.
The Xin’an River Basin Water Resources Management System was developed based on all the above models, and provides real-time update of observed and forecasted data through a user-friendly web application. The system forecasts water balance one year ahead, based on the monthly rainfall forecast data and estimation of water consumption.