The principal objective of the present research work is to determine the floristic composition of riverine ecotones and determine the factors responsible for the floristic pattern of two stressed rivers of Valsad district in the northern part of the Western Ghats. We have studied the floristic diversity of the thirteen study area for two years and analyzed the same using ecological models. Floristic diversity of the area is qualitatively determined using the Jaccardian index of various riverine sites, and quantitatively determined by the Important Value Index of trees, and frequency, abundance, and density of herbaceous cover. A total of 221 species were recorded represented by 183 genera of 64 families. We analyzed the difference in vegetation composition between two rivers is mainly due to geological and climatic reason and little anthropogenic influence was also observed. Finding the most prototypical stress factor affecting the floristic diversity of the riverine ecotone of hilly tracks of northern the Western Ghats and creating a database of the same will help in better preservation of biodiversity. This will guide future ecologists and governmental bodies in environmental management.