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Title: GIS-based impact analysis of revitalisation of dried rivulets in Pampa River Basin, Kerala, India

Authors: N.A. Mayaja; C.V. Srinivasa

Addresses: Department of Civil Engineering, Global Academy of Technology, Bangalore, India ' Department of Civil Engineering, Global Academy of Technology, Bangalore, India

Abstract: Inundation models play significant role in flood disaster management. Pampa River is a tropical, monsoon-fed river in Kerala, India. Its basin experiences severe floods owing to excessive human interference. Some of the streams in this river, which effectively did hydraulic-balancing, dried-up due to indiscriminate human intervention. In this paper, utilising HEC-RAS model, flood plain inundation map of Pampa River Basin is evolved. Scenario of rejuvenating two prominent dried streams simulated and effects of rejuvenation in reducing flood havoc analysed. Study revealed that by revitalising dried rivulets, about 20% reduction in flood inundation area can be achieved, improving flood situation considerably.

Keywords: Pampa River Basin; rejuvenation of rivulets; flood plain inundation mapping; India.

DOI: 10.1504/IJHST.2021.112655

International Journal of Hydrology Science and Technology, 2021 Vol.11 No.1, pp.38 - 53

Received: 04 Feb 2019
Accepted: 17 Apr 2019

Published online: 06 Jan 2021 *

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