Tenzin, S. and Dorji, U. 2025. Investigating Sediment Grain Size Distribution and Transport Patterns in Punatsangchhu River, Punakha, Bhutan. Indonesian Journal of Social and Environmental Issues (IJSEI). 6, 1 (Apr. 2025), 94-111. DOI:https://doi.org/10.47540/ijsei.v6i1.1615.