Morphometric Analysis for Prioritization of Watersheds in the Mullayar River Basin, South India

The Mullayar River is one of the tributaries of the Periyar River, south India. Morphological features and linear and aerial morphometric parameters of the Mullayar River Basin (MRB), located in the Kerala State, India were studied with the help of Geographic Information System and utilizing the Survey of India (SOI) topographic sheets of 1:50,000 scale. The results show that this basin contains 5th order drainage network and drainage pattern mainly of sub-dendritic to dendritic type. It is observed that the drainage density is low indicative of highly permeable soil structure and thick vegetative cover. The circularity ratio value reveals that the basin is highly elongated and is covered by highly permeable homogenous geologic materials.

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