Vol. 11, Issue 4, Part D (2025)

Abstract
This study investigates the seasonal variation in key water quality parameters of Laharapur Dam to assess the ecological health and suitability of the water for various uses. Monthly water samples were collected from selected locations across the dam during the pre-monsoon, monsoon, and post-monsoon seasons. Parameters such as pH, temperature, dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids (TDS), and nutrient concentrations (nitrates and phosphates) were analyzed using standard methods. The results reveal significant seasonal fluctuations influenced by rainfall patterns, surface runoff, and anthropogenic activities in the catchment area. Monsoon season exhibited higher turbidity and nutrient loading due to increased runoff, while DO levels declined. Post-monsoon conditions showed partial recovery in water quality. The study highlights the need for regular monitoring and integrated management strategies to preserve water quality and ensure sustainable usage of Laharapur Dam resources.