Water quality of the river Chenab, an important Himalayan tributary of the river Indus, was studied at Akhnoor and has been described. Temperature, depth, turbidity and BOD recorded winter low record. Transparency, conductivity, total dissolved solids, dissolved oxygen, bicarbonate, chloride, calcium, magnesium and total hardness remained comparatively high during winter. Carbonate, sodium and potassium observed winter increase during first year and low record during second year. pH, nitrate, sulphate and silicate observed winter low record during first year and high record during second year. Phosphate observed irregular record throughout the year. These physico-chemical parameters remained irregular during summer and monsoon season.