A Coupled Water Quality-Quantity Model for Water Resource Allocation

As the increasing water demand and serious water pollution, conventional allocation pattern, which mainly considers water quantity as the key factor, is no longer satisfying the water allocation need. A coupled water quantity-quality model for water resource allocation in a river basin is presented in this paper. The model involves pollutants transport and hydrological cycling processes in the river basin, and realizes the match and couple between hydrologic model and hydrodynamic-water quality model in temporal scale. The model is applied to the Jiaojiang River basin, Zhejiang Province, China, the water deficit of each tank in 2004 and 2020 with two water allocation measures is estimated, respectively. Water quality in the river network under the two water allocation measures is simulated.