A Model-Based Approach for Improving Surface Water Quality Management in Aquaculture Using MIKE 11: A Case of the Long Xuyen Quadangle, Mekong Delta, Vietnam

This study utilized MIKE 11 to quantify the spatio-temporal dynamics of water quality parameters (Biochemical Oxygen Demand (BOD5), Dissolved (DO) and temperature) in Long Xuyen Quadrangle area Vietnamese Mekong Delta. Calibrated for year 2019 validated 2020, developed model showed a significant agreement between observed simulated values parameters. Locations near cage culture areas exhibited higher BOD5 than sites close pond/lagoon due effects numerous point sources pollution, including upstream wastewater out-fluxes from residential tourism activities surrounding areas, all which had direct impact on surface used aquaculture. Moreover, as aquacultural effluents have intensified dispersed over time, bodies has degraded. The findings suggest that effective planning, assessment management rapidly expanding aquaculture should be improved, more rigorous monitoring, ensure long-term sustainable expansion development sector particular, Delta whole.