A study on stochastic determination model in optimal water resources allocation for irrigation district

Jinghuiqu Irrigation District is a typical irrigation district using both wells and canals to irrigate crops. In recent years, the groundwater level presents a declining trend because of unreasonable utilization, which leads to a series of environmental geological problems. Therefore, it is significant to study how to develop and utilize groundwater resources rationally as well as to optimize allocation of irrigating water for irrigation area with the application of well-canal combination. According to the hydro-geological conditions of irrigation district, the paper sets up a groundwater stochastic-determination model (GSDM) using Visual Modflow. In the model, groundwater level are predicted and analyzed. Based on above analysis results, the paper performs further study on the pattern of water utilization in irrigation district. The results provide a basis for sustainable development and utilization of groundwater and optimal allocation of water resources in irrigation districts.