There are innumerable natural reservoirs of water in the himalayas. the people residing in these regions utilized the kinetic energy of the flowing water for many traditional processing systems. one such system is a gharat, or a traditional watermill that converts the kinetic energy of flowing water into mechanical energy using a turbine to drive grinding stones to grind flour, spices, and pulses. now, a diversion channel is made through small natural water reservoirs such as streams, rivulets, etc. in a conventional system, a metallic plate is fixed in the diversion channel. when the operation is required, a metallic plate is lifted from the diversion channel, and water is made to fall on a turbine through a height. when the operation is not required, the metallic plate is put in the channel, and water flows back to the reservoir through a bypass. this conventional system is time-consuming, risky, and hectic as the operator needs to climb up to the diversion channel to operate the stopper. so, the innovation is a stopper subsystem that consists of a pair of butterfly valves operating a pair of metallic plates controlled through a sprocket, chain, and lever mechanism from inside the structure of the gharat. this innovation increases the output of the gharat and makes the operation of gharat hassle-free. innovation is important as the gharat is a sustainable and environmentally friendly energy source. before 1961, the himalayan communities cent percent depended on the flour from the gharat. thus, it was an important livelihood source, but due to a lack of improvements in the conventional system is forcing people to abandon these traditional knowledge systems due to low performance and low income.