Conventional energy generation techniques such as coal and oil power plants release large amounts of greenhouse gases due to fossil fuel combustion while renewable energy sources, in particular, hydroelectric generation, are considered climate-benign since they do not emit fossil carbon to produce energy. However, dams and their associated reservoirs are not entirely GHG-neutral and their emissions need further investigation. Namely, reservoirs contribute to a major source of methane emission owning to the energy and material inputs in the construction and the decommissioning phase as well as...