Abstract
Geomatics-Based Framework for Assessing Environmental Impacts of Grand Ethiopian Renaissance Dam (GERD) Reservoir
Highlights
The main objective of this paper is to develop an integrated analysis framework of remotely-sensed data ad GIS techniques for delineating surface area of the dam reservoir, simulating their capacities and assessing associated environmental impacts with application to Grand Ethiopian Renaissance Dam (GERD)
Based on the surface area of GERD reservoir delineated from Sentinel-2 image dated 10/03/2021, the reservoir had a total area of 182.3 km2
The application of the proposed framework analysis in the case of GERD reservoir revealed that the great potentials of Geomatics for simulating dams’ reservoirs and monitoring water storage for the dams’ reservoirs and for quantifying their potential environmental impacts
Summary
Dams and associated reservoirs lead usually to dramatic changes in the local site of the dam and beyond that have significant direct and indirect environmental impacts along with economic and cultural losses. These impacts may involve population resettlement, inundation of faunal and flora, changing in natural landscape, distracting archaeological and historical features, deteriorating water quality, changing in the hydrological regime and altering micro-climate (Wang et al, 2012; Devic, 2015; Abtew & Dessu, 2019). Remote sensing and GIS techniques can assist in simulating dam reservoirs, delineating their surface area, simulating their storage capacities and assessing associated impacts
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