INFERRING HYDROLOGICAL CHARACTERISTICS OF GABHARU RIVER BASIN, NORTH-EAST INDIA, BASED ON THE APPLICATION OF SOME IMPORTANT MORPHOMETRIC PARAMETERS

Bandeepa Medhi; Madhurjyojit Chakravartty; Amal Dutta Patgiri

Volume : VI, Issue : III, March - 2017

INFERRING HYDROLOGICAL CHARACTERISTICS OF GABHARU RIVER BASIN, NORTH-EAST INDIA, BASED ON THE APPLICATION OF SOME IMPORTANT MORPHOMETRIC PARAMETERS

Bandeepa Medhi, Madhurjyojit Chakravartty, Amal Dutta Patgiri

Abstract :

The Gabharu river basin is a sixth order basin lying on the northern side of the Brahmaputra. The basin is constituted predominantly of Siwaliks in the upper catchment whereas, the lower part is constituted of Quaternary sediments. On the basis of analysis of some morphometric parameters using GIS techniques, it is understood that the river basin has a high retention or storage capacity and, therefore, low run-off generation ability. High values of the relief parameters such as, basin relief (1800m) and relief ratio (36.13m/km) provide a contrary picture suggesting appreciable run-off. But, in the present study area, the dominant presence of soft and permeable Upper Siwalik rocks reduces run-off potential and the relief effect is thus negated.