The spillway of Tanling Reservoir in Lianzhou City, Qingyuan City, Guangdong Province is 460m. According to the search, the maximum drop of the spillway of Tanling Reservoir in Lianzhou City, Qingyuan, East China is 460 meters. Tanling Reservoir is located in the east of Lianzhou City. Because the reservoir was built in Yuan Tan Cave, Tanling Township, it was named. Built in 1967. The catchment area 142 square kilometers, the normal storage capacity148.5 million cubic meters, and the maximum storage capacity can reach18 million cubic meters. The water level of the reservoir is as high as 620m, and the maximum drop of the spillway of the reservoir is 460 m. It is the largest reservoir with the highest altitude in Guangdong, and is mainly used for flood control, power generation and water supply. The water surface area is 15000 mu (about 10 square kilometer), and the average water depth is about 15m. The regional annual precipitation is 156 1mm, and the forest coverage rate of the basin is high. This reservoir has a large reserve of water energy. Because the water flow drop is as high as 300m, the water demand per power generation 1 kWh is only 0.88t, and the economic benefit of power generation is very high.