Background
Hydroelectricity has been used for decades, and is still playing an important role for generating the electricity for our daily life today. To get such renewable energy, a dam and reservoir with hydropower plant is required, however, it may also impact the ecological environment downstream flow if it’s not well monitored and managed. In order to maintain the sustainable development of ecology, China has released policies to ask all hydropower plants national wide to build a monitoring and alarm system, which the water department can remote monitor the water level, water quality, water flow of dam and reservoir, as well as downstream flow, to protect the environment of downstream flow.
