Analysis of runoff pattern for all major basins of India derived using remote sensing data

Abstract

An attempt has been made to quantify and analyse intra-and inter-basin runoff potential for all basins of India using multi-date remote sensing data, curve number approach and normal rainfall data of 376 stations. Analysis showed that the highest runoff depth (1812 mm) was observed in the Brahmaputra basin (including Barak and other rivers) and the lowest (210 mm) in the Luni and rivers of Saurashtra basin. The Brahmputra basin, occupying only 8% of the geographical area of the country, provided around 19% of total runoff. In almost all basins, 90% runoff occurs during the five-month period starting from June. The runoff in the Brahmaputra, Narmada and Mahanadi basins responded well to rainfall, i.e. high runoff coefficient, whereas low runoff coefficient was found in the Cauvery basin.