Shangluo Erlongshan Reservoir

　　Erlongshan Reservoir is situated in the northwest of Shangzhou District, on the upper reaches of the Danjiang River, approximately 4 kilometers from the city center. The dam stands 63.7 meters high. It has a total storage capacity of 80 million cubic meters, with a maximum water surface area of 5,490 mu and an average water area of 3,420 mu. The elevation of the reservoir area ranges from 720 to 1,300 meters, with an average annual temperature of 12.6 degrees Celsius and average annual rainfall of 720 millimeters. The reservoir controls a catchment area of 965 square kilometers along the upper reaches of the Danjiang River. Since its completion in 1973, it has delivered significant social and economic benefits in flood control, power generation, irrigation, urban water supply, and aquaculture. As the reservoir is located in the historically renowned “Xian’e Stream,” the reservoir area is also known as Xian’e Lake. As early as the Tang Dynasty, renowned poets and scholars such as Li Bai, Du Fu, and Bai Juyi traveled from afar to compose poetry, sail, and sightsee here. Since then, it has been a renowned tourist destination of the ancient capital Chang’an.