Evaluation of Grand Ethiopian Renaissance Dam Lake Using Remote Sensing Data and GIS

Ethiopia began constructing the Grand Ethiopian Renaissance Dam (GERD) in 2011 on Blue Nile near borders of Sudan for electricity production. The dam was constructed as a roller-compacted concrete (RCC) gravity-type dam, comprising two power stations, three spillways, and Saddle Dam. main is expected to be 145 m high 1780 long. After filling estimated volume water bounded about 74 billion m3. first reservoir started July 2020. It crucial monitor newly impounded lake its size security balance countries. We used remote sensing techniques geographic information system analyze different satellite images, including multi-looking Sentinel-2, Landsat-9, Sentinel-1 (SAR), changes from 21 2020 28 August 2022. during after first, second, third Reservoir Lake compared future hazards environmental impacts. proposed monitoring early warning Basin lakes essential act confidence-building measure provide an opportunity cooperation between