The present study examines the impact of industrial wastewater contamination on the aquatic ecosystems of the Hakari and Bargushad rivers, with a focus on the pollution originating from the Oxchu River. The Oxchu River, primarily contaminated by effluents from copper molybdenum production in Armenia, contributes to significant fish mortality events in its territory and Khudafarin Reservoir. Through regular monitoring and analysis, the presence of heavy metals in the water has been confirmed to negatively affect biodiversity, impairing the health of the river ecosystems. In response to these challenges, the study proposes the creation of fish farming reservoirs along the clean watercourses of the Hakari and Bargushad rivers, prior to their confluence with the Khudafarin Reservoir. These reservoirs will enhance aquaculture production and support the preservation of native fish species. Furthermore, the study highlights the potential for hydroelectric power generation in these areas, demonstrating the dual environmental and economic benefits of the proposed infrastructure. This strategy will not only improve water quality and fish stocks but also offer opportunities for water conservation and agricultural irrigation, ensuring the long-term sustainability of the river ecosystems.