<p> An experimental study of stratified fluid flow phenomena for two equal depth, different density stratified liquids in a rectangular channel is presented. Two two fluid combinations were used, a sugar water and fresh water, and fresh water and varsol. The critical value of the determined densimetric Froude number at which the upper fluid began to participate in the flow was obtained and found to be 0.28 as against Huber's (1) predicted value of 2.76. It was concluded that the interfacial mixing and viscous effects are largely responsible for this difference. </p> <p> An attempt to extend Harleman's (7) work was made. The results obtained in present work were in good agreement with Harleman's (7) experimental work. </p> / Thesis / Master of Engineering (ME)