<p>The Meghadri Gedda surplus channel, Visakhapatnam, India, is an important waterway originating from Meghadri Gedda reservoir and flowing into the Bay of Bengal, which is heavily impacted by the surrounding industries. This present study adopts a novel integrated technique that combines SWAT-based hydrological modeling with detailed physicochemical characterization of industrial effluents to evaluate both watershed processes and pollution impacts in an industrially influenced catchment. Furthermore, a comparative assessment of industrial-treated effluent quality against CPCB standards was included in this study, an aspect that has received limited attention in previous studies in this region. SWAT model was used in this study to analyze the spatial distribution and hydrological process around the MG catchment area. The physicochemical properties of industrial effluents and channel water were analyzed to assess the extent of industrial pollution and its impact on the MG surplus channel. Industrial effluents from Coromandel Fertilizers Limited and rain C-II carbon showed remarkable physicochemical characteristics such as low pH of 1.02 at ETP inlets, high TDS value up to 5020mg/L, and elevated chloride concentrations up to 148,890 mg/L. The values of BOD and COD also crossed the CPCB limits with 4875 mg/L BOD and 1232 mg/L COD, indicating a notable organic load. Alkalinity concentrations in both batches vary from 80 to 720 mg/L, and desalination-reject magnesium concentrations exceed the standard limits of CPCB. The catchment area received annual precipitation of 1363.6 mm with a runoff of 966.49 mm, which indicates a remarkable portion of rainfall contributing to channel water flow. Only 21.32 mm of groundwater recharge was calculated, while evapotranspiration was high at 229.8 mm. Annually, 16.84 mg/ha nutrient losses by crop were substantially high due to nitrate leaching and phosphorus runoff.</p>