Title: Estimation of storage capacity of the proposed rainwater harvesting structures (check dam) using geospatial technique: a case study in Tripura, India

Authors: Bajitborlang L. Chyne; Ranjit Das; Naveen Ramachandran; Shanbor Kurbah

Addresses: North Eastern Space Application Centre, Department of Space, Government of India, Umiam, Meghalaya, 793103, India ' North Eastern Space Application Centre, Department of Space, Government of India, Umiam, Meghalaya, 793103, India ' North Eastern Space Application Centre, Department of Space, Government of India, Umiam, Meghalaya, 793103, India ' North Eastern Space Application Centre, Department of Space, Government of India, Umiam, Meghalaya, 793103, India

Abstract: The state of Tripura receives 2,380 mm rainfall annually. Due to the topography, most of the surface runoff drains off. Rainwater harvesting is a straightforward technique that collects and stores runoff from open spaces for future use. Check dam is one of the structures for harvesting rainwater. For preparing a proper water management scheme, estimation of the storage capacity of the reservoir is essential. Remote sensing and geographic information system is effectively utilised for estimation the storage capacity of the reservoirs. The inundated areas of the dams were estimated using digital elevation model in GIS environment and used finite difference method to develop the depth area curve and then elevation-area-capacity curve. The storage capacities of the proposed structures were estimated to be 3.19 and 0.35 million m³ at Buri Gang and Ghoramara Cherra respectively. This study provides a methodology to estimate the storage volume of reservoirs using geospatial technique.

Keywords: reservoir; capacity; geographic information system; GIS; digital elevation model; DEM; topography; India.

DOI: 10.1504/IJHST.2024.138800

International Journal of Hydrology Science and Technology, 2024 Vol.17 No.4, pp.446 - 457

Received: 04 Aug 2022
Accepted: 10 Jan 2023
Published online: 31 May 2024 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article