Engineering Environmental Impact of Xiahushan Reservoir

The construction of Xiahushan Reservoir conforms to the planning content of Comprehensive Planning Report of Caizi Lake Basin in Anhui Province. The cooperation between Xiahushan Reservoir and the dike reinforcement project in the lower reaches of Dasha River can improve the flood control standard in the lower reaches of Dasha River from the current once every 7-8 years to once every 20 years. The irrigation guarantee rate of 350,800 mu of cultivated land in Xiahushan Irrigation District can be increased to over 80%. It can solve the water supply problem in five towns of Huaining County, Tongcheng City, Qianshan County 1 county. The average annual power generation is 35.05 million kW·h, which will enhance the peak regulation capacity of Anqing Power Grid.

The adverse impact of the project on the environment mainly comes from dam blocking and reservoir flooding, which will affect the aquatic ecosystem of the river, and reservoir flooding will reduce the cultivated land resources in the reservoir area. The operation of the reservoir will greatly change the hydrological conditions downstream of the dam and have a certain impact on the river ecosystem downstream of the dam. The impact of engineering construction on terrestrial ecosystem is relatively small; The adverse effects of engineering construction on water, gas, noise and solid waste are short-term effects, which can be reduced or reduced by taking preventive, recovery and compensation measures. After taking corresponding measures to protect the ecological environment, the project is feasible.