2023. Estimating Water Surface Elevation using HEC-RAS, HEC-GEORAS, Space and Ground Observation in the River Ganga and Yamuna at Sangam, Allahabad. Journal of Water Engineering and Management. 4, 2 (Sep. 2023), 47–61. DOI:https://doi.org/10.47884/jweam.v4i2pp47-61.