Yiyuan ape-man skull fossil site
The source of yi river is Yiyuan. Yiyuan is named because it is located at the source of yi river. It has a long history and outstanding people. As early as 400,000 to 500,000 years ago, the ancestor of the Chinese nation "Yiyuan Ape Man" thrived in this treasure land. It has nurtured splendid cultural relics and created human social activities and ancient civilization in Yimeng Mountain area. There are a number of Longshan cultural and Dawenkou cultural sites, such as the famous Yiyuan ape-man fossil site, Shangyadong paleolithic site, Zhong Rulin tomb, Guziping, Xiguzhuang and Caojiazhuang, Dongan Guxian site, Qi Great Wall site, cliff stone carvings in Tang Dynasty, etc.
tianzhuang reservoir
Tianzhuang Reservoir, four kilometers away from Yiyuan County, is the source of yi river and the first reservoir in yi river. Yiyuan is a pure mountainous area with 2075 hills and hills. Although there are abundant springs and more than 600 rivers/kloc-0, it is the highest county in Shandong Province and is known as the "roof of Shandong", so "ten years of long drought" has become the natural environment here. Water is the source of life, and nothing can survive without water; Without water, people can't live. In order to change this bad phenomenon, the government decided to build Tianzhuang Reservoir at 1958. In order to build Tianzhuang Reservoir, nine villages were relocated or flooded. The reservoir dam was closed on June 1960, and the only large reservoir in Yiyuan County was built. Since then, it has undergone continuous maintenance and construction, with the construction of main dam, auxiliary dam, overflow gate, spillway tunnel and hydropower station. The total storage capacity is 65.438+0.3 billion cubic meters. The height of the dam is 3 1m, and the total length of the dam is 1 100m. It is like a dragon lying in the north and south, lying in the sunshine of Lushan Mountain.
Bashan reservoir
Bashan Reservoir is a huge pearl, embedded in the intersection of yi river and its tributary, Nuanyang River, which is 15km northwest of Yishui County. Built in 1959. It is the only reservoir on the main stream of the Yi River with a total storage capacity of 508 million cubic meters. It is the third largest reservoir in Shandong Province and is known as "Yimeng Mother Lake". The reservoir is a large-scale reservoir with flood control and irrigation, power generation and fish farming. The dam is arched, starting from the white wax top in the west, crossing the Yi River in the east, with a total length of 1.780m, the maximum dam height of 33.65m and the dam top width of 6m. Its completion has improved the ability of flood control and drought relief, and the flood control standard has reached 100, which has promoted the development of local industrial and agricultural production.