Investigating nitrate change with hybrid modeling along a mountain river

Document Type : Research Paper

Authors

Department of Water Science and Engineering, Faculty of Agriculture, Bu-Ali Sina University, Hamadan, Iran.

10.22059/jwim.2024.376403.1161

Abstract

The examination of water quality in terms of pollution is a crucial aspect in managing the quality of surface water, such as rivers. This study focused on analyzing the trend of nitrate (NO3) pollution in the 7.02 km long of the Abbas-Abad River in 2022. The HEC-RAS model was used to determine the river pooling, and then, the geometry was entered into the QUAL2Kw model. Calibration and validation were conducted using the data from May and July 2022, respectively, demonstrating the model's accuracy. The findings revealed an increasing trend in nitrate concentration of 7.6% during the non-agricultural season and an 8.0% increase during the agricultural season due to the use of fertilizers and chemical pesticides. To mitigate this, it is recommended to prevent pollutant entry into the riverbed.

Keywords

Main Subjects

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Water and Irrigation Management
Volume 14, Issue 3
December 2024
Pages 697-708

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