Integration of numerical models to simulate 2D hydrodynamic/water quality model of contaminant concentration in Shatt Al-Arab River with WRDB calibration tools

Abstract The hydrodynamic model is essential for building a water quality rivers, lakes, estuaries, and other systems. Most software, such as HEC-RAS, can perform complex surface body limitations to represent the corresponding area. In contrast, models, like WASP, simulate wide range of contaminants in multidimensional geometry reservoirs. Still, it requires flow information from separate models. This article aims develop comprehensive Shatt Al Arab River south Iraq by linking HEC-RAS with WASP. A variety software techniques has sequentially been used. includes GIS DEM modification, model, Python code PyCharm run external coupler, WASP advective dispersive contaminant transport, finally, WRDB full calibration process results display. showed successful transportation had achieved. Moreover, described an effective plotting comparison graphs statistical summaries make appropriate decision. Another goal this work collect equations associated reaction rates source/sink kinetic eutrophication’s state variables.