Mettupalayam Taluk is located in Northern part of Coimbatore district and comprised as upland plateau region of Tamilnadu. The Nilgiris on the northwest and Odhimalai and Thenkalmalai on the North East are the important hills, which attain a heights of over 1200M above mean sea level (MSL) and average elevation of the study area is 400 M above MSL. Mettupalayam taluk is having moderately undulating topography with general slope from northeast to southwest. The ‘Palghat Gap’, which is an east-west trending mountain pass, is located in the western part of the Mettupalayam Taluk. The structural and denudational processes are predominating on the fluvial processes; as a result the area is marked by plateau land forms. Structural denudational and residual hills of charnockite and gneisses demarked as linear ridge of basic dykes. The gneisses and ultra basic hills have invariably generated a wide bazada zone. The undulating topography with innumerable depressions was used to storage of rainwater for agriculture and domestic works. The present study revealed various geomorphic units in Mettupalayam taluk such as structural and residual hills, linear ridges, bazada zones, buried pediments, active pediments, shallow pediments, erosional plains, valley fills and upland plateau.
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