Abstract: The impacts of water projects on groundwater environment is analyzed in this paper. A hydropower station is taken as an example to discuss the technical points and methods of assessing the environmental impact, such as project classification, assessment grades and scope, groundwater survey and evaluation, prediction and evaluation of the impact. Furthermore, corresponding measures to control the impacts are proposed to provide technical basis to protecting groundwater and solving engineering problems caused by the construction and operation of the water projects.

Key words: water project, groundwater environment, impact assessment, assessment key points, assessment methods